Cisco

Exam 200-125
CCNA Cisco Certified Network Associate CCNA (v3.0)
Version: 6.0

[ Total Questions: 401 ]

Topic break down

Topic

No. of Questions

Topic 1: Network Fundamentals

27

Topic 2: LAN Switching Technologies

60

Topic 3: Routing Technologies

75

Topic 4: WAN Technologies

27

Topic 5: Infrastructure Services

71

Topic 6: Infrastructure Security

18

Topic 7: Infrastructure Management

37

Topic 8: Mixed Questions

86

2

Topic 1, Network Fundamentals

Question No : 1 - (Topic 1)
Where does routing occur within the DoD TCP/IP reference model?
A. application
B. internet
C. network
D. transport
Answer: B
Explanation:
The picture below shows the comparison between TCP/IP model & OSI model. Notice that
the Internet Layer of TCP/IP is equivalent to the Network Layer which is responsible for
routing decision.

3

Question No : 2 - (Topic 1)
Which of the following statements describe the network shown in the graphic? (Choose
two.)

A. There are two broadcast domains in the network.
B. There are four broadcast domains in the network.
C. There are six broadcast domains in the network.
D. There are four collision domains in the network.
E. There are five collision domains in the network.
F. There are seven collision domains in the network.
Answer: A,F
Explanation:
Only router can break up broadcast domains so in the exhibit there are 2 broadcast
domains: from e0 interface to the left is a broadcast domain and from e1 interface to the
right is another broadcast domain ->.
Both router and switch can break up collision domains so there is only 1 collision domain
on the left of the router (because hub doesn’t break up collision domain) and there are 6
collision domains on the right of the router (1 collision domain from e1 interface to the
switch + 5 collision domains for 5 PCs in Production) ->.

4

Question No : 3 - (Topic 1)
A network interface port has collision detection and carrier sensing enabled on a shared
twisted pair network. From this statement, what is known about the network interface port?
A. This is a 10 Mb/s switch port.
B. This is a 100 Mb/s switch port.
C. This is an Ethernet port operating at half duplex.
D. This is an Ethernet port operating at full duplex.
E. This is a port on a network interface card in a PC.
Answer: C
Explanation:
Modern Ethernet networks built with switches and full-duplex connections no longer utilize
CSMA/CD. CSMA/CD is only used in obsolete shared media Ethernet (which uses repeater
or hub).

Question No : 4 - (Topic 1)
Host 1 is trying to communicate with Host 2. The e0 interface on Router C is down.

Which of the following are true? (Choose two.)
A. Router C will use ICMP to inform Host 1 that Host 2 cannot be reached.
5

B. Router C will use ICMP to inform Router B that Host 2 cannot be reached.
C. Router C will use ICMP to inform Host 1, Router A, and Router B that Host 2 cannot be
reached.
D. Router C will send a Destination Unreachable message type.
E. Router C will send a Router Selection message type.
F. Router C will send a Source Quench message type.
Answer: A,D
Explanation:
Host 1 is trying to communicate with Host 2. The e0 interface on Router C is down. Router
C will send ICMP packets to inform Host 1 that Host 2 cannot be reached.

Question No : 5 - (Topic 1)
Refer to the exhibit.

Based on the information given, which switch will be elected root bridge and why?
A. Switch A, because it has the lowest MAC address
B. Switch A, because it is the most centrally located switch
C. Switch B, because it has the highest MAC address
D. Switch C, because it is the most centrally located switch
E. Switch C, because it has the lowest priority
F. Switch D, because it has the highest priority
Answer: E
Explanation:

6

To elect the root bridge in the LAN, first check the priority value. The switch having the
lowest priority will win the election process. If Priority Value is the same then it checks the
MAC Address; the switch having the lowest MAC Address will become the root bridge. In
this case, switch C has the lowest MAC Address so it becomes the root bridge.

Question No : 6 - (Topic 1)
Which layer in the OSI reference model is responsible for determining the availability of the
receiving program and checking to see if enough resources exist for that communication?
A. transport
B. network
C. presentation
D. session
E. application
Answer: E
Explanation:
This question is to examine the OSI reference model.
The Application layer is responsible for identifying and establishing the availability of the
intended communication partner and determining whether sufficient resources for the
intended communication exist.

Question No : 7 - (Topic 1)
Refer to the graphic.

7

IPX headers contain a hop count. the MAC address of router interface e1 C. 2. the router must perform the following steps: 1. These network-layer headers contain source and destination network addresses. 8 . and remove the MAC header. After receiving the packets. 15 hops is the maximum number of hops (or routers) that a packet can cross. Examine the age of the packet. By default. For example. Local devices address packets to the router's MAC address in the MAC header. The router then strips off the MAC header and examines the network-layer header to determine what to do with the packet. The router checks the packet for MAC-layer errors. If a packet has a hop count of 15. routers can look further into the packet to discover the network for which a packet is destined. the router discards the packet. the MAC address of the server network interface D. Check the incoming packet for corruption. Routers make forwarding decisions based on the packet's networklayer header (such as an IPX header or IP header). the MAC address of router interface e0 B.Host A is communicating with the server. the MAC address of host A Answer: A Explanation: Whereas switches can only examine and forward packets based on the contents of the MAC header. IP headers contain a Time to Live (TTL) value. The router must ensure that the packet has not come too far to be forwarded. What will be the source MAC address of the frames received by Host A from the server? A.

and the distance to those networks. D. A router cannot decrement the TTL value to 1 and then forward the packet. Determine the route to the destination. Build the new MAC header and forward the packet. Implement a router-on-a-stick configuration. Question No : 8 . Question No : 9 DRAG DROP . which increments as the packet is forwarded through each router. type ROUTE PRINT in the DOS box.) 4.Unlike the IPX hop count. B. If an IP packet has a TTL value of 1. 3. Use a hub to connect the four VLANS with a Fast Ethernet interface on the router. C.(Topic 1) A router has two Fast Ethernet interfaces and needs to connect to four VLANs in the local network. the direction to the desired network (the outgoing interface number). the IP TTL value decrements as the IP packet is forwarded through each router. Answer: D Explanation: A router on a stick allows you to use sub-interfaces to create multiple logical networks on a single physical interface. The MAC header includes the router's MAC address and the final destination's MAC address or the MAC address of the next router in the path. Add a second router to handle the VLAN traffic. using the fewest physical interfaces and without decreasing network performance? A. the router builds a new MAC header for the packet. (If you want to read the IP routing tables on a Windows 95/98 workstation.(Topic 1) 9 . the router must build a new header. After determining which direction to forward the packet. How can you accomplish this task. the router discards the packet. Routers maintain a routing table that lists available networks. Finally. Add two more Fast Ethernet interfaces.

What is the highest layer of the protocol stack that the network administrator is using for this operation? A. data link 10 . transport E. internet F. session D.) Answer: Question No : 10 .Match the terms on the left with the appropriate OSI layer on the right.(Topic 1) A network administrator is verifying the configuration of a newly installed host by establishing an FTP connection to a remote server. presentation C. application B. (Not all options are used.

Complete this network diagram by dragging the correct device name or description to the correct location.Answer: A Explanation: FTP belongs to Application layer and it is also the highest layer of the OSI model.(Topic 1) Refer to the exhibit. Not all the names or descriptions will be used. Question No : 11 DRAG DROP . Answer: 11 .

(Topic 1) A receiving host computes the checksum on a frame and determines that the frame is damaged. Packets are created when the network layer adds Layer 3 addresses and control information to a segment. The data link layer adds physical source and destination addresses and an FCS to the segment. C. Packets are created when the network layer encapsulates a frame with source and destination host addresses and protocol-related control information.(Topic 1) Which of the following correctly describe steps in the OSI data encapsulation process? (Choose two. transport C. D. network D. At which OSI layer did this happen? A. and flow control. The presentation layer translates bits into voltages for transmission across the physical link. physical Answer: D Explanation: The Data Link layer provides the physical transmission of the data and handles error notification. The frame is then discarded. The Data Link layer formats the message into pieces. According to this question the frame is damaged and discarded which will happen at the Data Link layer. The transport layer divides a data stream into segments and may add reliability and flow control information. session B.Question No : 12 . Question No : 13 . each called a data frame. Protocols Data Unit (PDU) on Datalink layer is called frame. E. data link E. network topology. 12 .) A. and adds a customized header containing the hardware destination and source address. B.

Question No : 14 . and routes the data appropriately.) 13 . basic flow control is implemented by acknowledgment by the receiver of the receipt of data. Second. Each segment is assigned a sequence number. The Network layer (Layer 3) has two key responsibilities. First.D Explanation: The transport layer segments data into smaller pieces for transport.Answer: A. the network layer determines the best path to a particular destination network. The transport layer also use flow control to maximize the transfer rate while minimizing the requirements to retransmit. in TCP. the sender waits for this acknowledgment before sending the next part. so that the receiving device can reassemble the data on arrival.(Topic 1) Refer to exhibit: Which two destination addresses will be used by Host A to send data to Host C? (Choose two. For example. this layer controls the logical addressing of devices.

the IP address of Host C D.A. A CSU/DSU converts analog signals from a router to a leased line. So in this case Host A will use the IP address of Host C and the MAC address of E0 interface to send data. A CSU/DSU converts digital signals from a router to a leased line. it replaces the source MAC address with its own E1 interface’s MAC address and replaces the destination MAC address with Host C’s MAC address before sending to Host C.(Topic 1) What is the difference between a CSU/DSU and a modem? A. a modem converts digital signals from a router to a leased line. the MAC address of the router's E0 interface Answer: C. a modem converts analog signals from a router to a leased line. A CSU/DSU converts analog signals from a router to a phone line. the IP address of Switch 1 B. a modem converts digital signals from a router to a phone line. while a modem is used to convert digital signals over a regular POTS line. D. Answer: D Explanation: CSU/DSU is used to convert digital signals from a router to a network circuit such as a T1. a modem converts analog signals from a router to a phone line. the MAC address of Switch 1 C. the IP address of the router's E0 interface F. the source and destination IP addresses are not changed. A CSU/DSU converts digital signals from a router to a phone line. the MAC address of Host C E. C. Question No : 15 . When the router receives this data. B. 14 . Only the source and destination MAC addresses are changed.F Explanation: While transferring data through many different networks.

E. A CSU/DSU is used between two digital lines For more explanation of answer D. A modem modulates outgoing digital signals from a computer or other digital device to analog signals for a conventional copper twisted pair telephone line and demodulates the incoming analog signal and converts it to a digital signal for the digital device.(Topic 1) Which of the following describes the roles of devices in a WAN? (Choose three. F. A modem terminates an analog local loop. 15 . A CSU/DSU terminates an analog local loop. The network’s DCE device (includes CSU/DSU) provides clocking to the DTEconnected interface (the router’s serial interface). A router is commonly considered a DTE device.E Explanation: The idea behind a WAN is to be able to connect two DTE networks together through a DCE network. A CSU/DSU terminates a digital local loop.Question No : 16 . C. in telephony the local loop (also referred to as a subscriber line) is the physical link or circuit that connects from the demarcation point of the customer premises to the edge of the carrier or telecommunications service provider’s network. B. A router is commonly considered a DCE device. Therefore a modem terminates an analog local loop is correct.) A.D. Answer: A. D. A modem terminates a digital local loop.

PC_1 is sending packets to the FTP server. Consider the packets as they leave RouterA interface Fa0/0 towards RouterB. Drag the correct frame and packet address to their place in the table.(Topic 1) Refer to the exhibit.Question No : 17 DRAG DROP . Answer: 16 .

which entry will be in the ARP cache of HostA to support this transmission? 17 . After HostA pings HostB.(Topic 1) Refer to the exhibit.Question No : 18 .

Exhibit A B.6.1.1.168. Exhibit F Answer: A Explanation: Host A knows host B is in another network so it will send the pings to its default gateway 192. Question No : 19 . Exhibit E F.A. Exhibit B C.6. Host A sends a broadcast frame asking the MAC address of 192. Exhibit C D. Exhibit D E.168.(Topic 1) 18 . This information (IP and MAC address of the default gateway) is saved in its ARP cache for later use.

x.x.255.x.Refer to the exhibit.E Explanation: If Subnet Mask is 255.128.255.254. With a network wide mask of 255.128.) A.x.255.255.x. With a network wide mask of 255. If Subnet Mask is 255. C.255. must be a Layer 3 device for the PCs to communicate with each other.128x. each interface does not require an IP address. B. With a network wide mask of 255. so the IP Addresses of 2 hosts fall in different subnets so each interface needs an IP an address so that they can communicate each other.255.127 & x.255.0. With a network wide mask of 255. With a network wide mask of 255.x.0 . Answer: B. D.254.255.0 the 2 specified hosts fall in different subnets so they need a Layer 3 device to communicate.0.x.x.255.255. E.0 the 2 specified hosts are in same subnet so are in network address and can be accommodated in same Layer 2 domain and can communicate with each other directly using the Layer 2 address.255. each interface does require an IP address on a unique IP subnet.255.255.255.128 the hosts vary from x.D. must be a Layer 2 device for the PCs to communicate with each other.0.255.x. Which three statements correctly describe Network Device A? (Choose three. each interface does not require an IP address. 19 . If Subnet Mask is 255.

under what two scenarios can devices transmit? (Choose two. to establish a priority system to determine which device gets to transmit first E.(Topic 1) For what two purposes does the Ethernet protocol use physical addresses? (Choose two. each frame has the same priority to transmit by default ->.(Topic 1) In an Ethernet network. Layer 2 frame and Layer 3 packet can be recognized via headers. If not. Question No : 21 .E Explanation: Physical addresses or MAC addresses are used to identify devices at layer 2.) A. to allow communication with devices on a different network C.) A. when the server grants access 20 . to allow communication between different devices on the same network F. they cannot communicate ->. when the medium is idle E. when they detect no other devices are sending D. Layer 3 packet also contains physical address ->. All devices need a physical address to identify itself. to differentiate a Layer 2 frame from a Layer 3 packet D. To communicate on different network we have to use Layer 3 addresses (IP addresses) -> B is not correct. to allow detection of a remote device when its physical address is unknown Answer: A.Question No : 20 . when they receive a special token B. to uniquely identify devices at Layer 2 B. On Ethernet. MAC addresses are only used to communicate on the same network. when there is a carrier C.

After the message is sent. D. While this transmission is occurring.0c36. C.40. the device returns to its default listening mode.6965.) A. a device will transmit its message. it will wait for a specified amount of time before attempting to transmit.(Topic 1) Refer to the exhibit: What will Router1 do when it receives the data frame shown? (Choose three.D Explanation: Ethernet network is a shared environment so all devices have the right to access to the medium.1. B.Answer: C.168. Router1 will strip off the source IP address and replace it with the IP address 192. the device continues to listen for traffic or collisions on the LAN. When there is no traffic detected. the signals collide and cannot reach the destination. Router1 will strip off the destination IP address and replace it with the IP address of 21 . If more than one device transmits simultaneously.4320. If a device detects another device is sending. Question No : 22 .0c07. Router1 will strip off the source MAC address and replace it with the MAC address 0000. Router1 will strip off the destination MAC address and replace it with the MAC address 0000.

E. B.1. it uses ARP to resolve the address. Microsegmentation decreases the number of collisions on the network.(Topic 1) Which three statements accurately describe Layer 2 Ethernet switches? (Choose three. 22 . Note: Microsegmentation decreases the number of collisions but it increases the number of collision domains. Establishing VLANs increases the number of broadcast domains. F. Question No : 23 . F. the source and destination MAC changes as each router hop along with the TTL being decremented but the source and destination IP address remain the same from source to destination. C. All other switches in that broadcast domain will have only one root port. If a switch receives a frame for an unknown destination. Microsegmentation reduces and can even eliminate collisions because each segment is its own collision domain ->. E.) A.D.F Explanation: Remember. Switches that are configured with VLANs make forwarding decisions based on both Layer 2 and Layer 3 address information. Answer: A.40. Each network device gets the full bandwidth of the segment and does not have to share the segment with other devices. Spanning Tree Protocol allows switches to automatically share VLAN information.C. D. Router1 will forward the data packet out interface FastEthernet0/2. In a properly functioning network with redundant switched paths. each switched segment will contain one root bridge with all its ports in the forwarding state.E Explanation: Microsegmentation is a network design (functionality) where each workstation or device on a network gets its own dedicated segment (collision domain) to the switch.168.192. Router1 will forward the data packet out interface FastEthernet0/1. Answer: B.

Host A pings interface S0/0 on router 3. it throws away the packet. The picture below shows TTL values for each interface of each router and for Host B. 255 Answer: B Explanation: From the CCNA ICND2 Exam book: “Routers decrement the TTL by 1 every time they forward a packet. This prevents packets from rotating forever.Question No : 24 .” I want to make it clear that before the router forwards a packet. if a router decrements the TTL to 0. the TTL is still remain the same.(Topic 1) Refer to the exhibit. pings to S0/1 and S0/0 of Router 2 have the same TTL. 253 C. 23 . For example in the topology above. What is the TTL value for that ping? A. 254 D. 252 B.

(Topic 1) Refer to the exhibit. 24 .Notice that Host A initializes ICMP packet with a TTL of 255: Question No : 25 .

and the other devices in the domain listen to the network in order to avoid data collisions. this meant you had a lot of collisions. The number of collision domains would remain the same. So the client sends a DHCP Discover packet to EVERY PC in the local subnet 25 . E.What two results would occur if the hub were to be replaced with a switch that is configured with one Ethernet VLAN? (Choose two. since we mostly use switches to connect computers to the network. In the old days of hubs. Collision Domain: A group of Ethernet or Fast Ethernet devices in a CSMA/CD LAN that are connected by repeaters and compete for access on the network. A collision domain is sometimes referred to as an Ethernet segment. Since switches and bridges allow for broadcast traffic to go unswitched. and the old CSMA/CD would be working overtime to try to get those packets re-sent every time there was a collision on the wire (since Ethernet allows only one host to be transmitting at once without there being a traffic jam). a broadcast domain can contain multiple collision domains. D. The number of broadcast domains would increase. C. however. F. you break up collision domains by switching packets bound for other collision domains. With switches. These days. Answer: C. The Client is asking for a IP Address. Broadcast Domain: Broadcasting sends a message to everyone on the local network (subnet).D Explanation: Basically. B. An example for Broadcasting would be DHCP Request from a Client PC.) A. while routers (and VLANs) break up collision domains and broadcast domains. Broadcast domains are exactly what they imply: they are network segments that allow broadcasts to be sent across them. The number of broadcast domains would remain the same. Also. broadcasts can traverse collision domains freely. The number of collision domains would increase. The simple way to look at it is this way: switches break up collision domains. so when a broadcast hits a router (or the perimeter of a VLAN). don't allow broadcasts through by default. Only one device in the collision domain may transmit at any one time. but a collision domain can never have more than one broadcast domain associated with it. The number of collision domains would decrease. a collision domain is a network segment that allows normal network traffic to flow back and forth. it doesn't get forwarded. but the client does not know how to reach the DHCP Server. you generally have one collision domain to a PC. The number of broadcast domains would decrease. Routers.

If this switch is connected to another switch or a router. we have one collision domain more. Question No : 26 DRAG DROP . Each device that is connected to a Layer 1 device (repeater. hub) will reside in ONE single collision domain. Drag the correct frame and packet addresses to their place in the table. But only the DHCP Server will answer to the Request. we have TWO broadcast domains.or call them VLANs).(Topic 1) Refer to the exhibit. 26 . If 5 Devices are connected to a Hub. For example. So. we have 5 Collision domains. switch or bridge.(Broadcast). PC_1 is exchanging packets with the FTP server. if 5 PCs are connected with separate cables to a switch. if a router stands between all these devices. A Router is used to separate Broadcast-Domains (we could also call them Subnets . Collision Domain: Each connection from a single PC to a Layer 2 switch is ONE Collision domain. hub. How to count them? Broadcast Domain: No matter how many hosts or devices are connected together. Consider the packets as they leave RouterB interface Fa0/1 towards RouterA. all these devices are in ONE Broadcast domain (assuming a single VLAN). this is ONE Collision Domain. if they are connected with a repeater.

3333MAC 0000.7 Question No : 27 DRAG DROP .0c89.9999 IP 172.16.250IP 172.21.(Topic 1) Drag the cable type on the left to the purpose for which it is best suited on the right.16.Answer: Explanation: Source Mac AddressDestination Mac AddressSource IP addressDestination MAC address MAC 0000.) Answer: 27 .34. (Not all options are used.0c89.

switch to host.To connect two serial interfaces of 2 routers we use serial cable – To specify when we use crossover cable or straight-through cable. follow these tips: . we should remember: Group 1: Router. Switch One device in group 1 + One device in group 2: use straight-through cable Two devices in the same group: use crossover cable For example: we use straight-through cable to connect switch to router. switch to hub. Server Group 2: Hub.(Topic 2) Refer to the exhibit. hub to host. hub to server… and we use crossover cable to connect switch to switch. LAN Switching Technologies Question No : 28 . 28 . host to host…) Topic 2. Host.Explanation: To remember which type of cable you should use. router to router.

SwitchB(config)# ip default-gateway 192.255.168.255.254 SwitchB(config)# interface vlan 1 SwitchB(config-if)# ip address 192.8.168.8.0 SwitchB(config-if)# no shutdown C.255.252 255.8.8.8.255. SwitchB(config)# interface FastEthernet 0/1 SwitchB(config-if)# ip address 192.255.168.255.168.A technician has installed SwitchB and needs to configure it for remote access from the management workstation connected to SwitchA. it must have a management IP address on a VLAN on that 29 .254 255.8.255.252 255.0 SwitchB(config-if)# no shutdown Answer: C Explanation: To remote access to SwitchB. SwitchB(config)# ip route 192.255.0 SwitchB(config-if)# no shutdown B.255.8.255.252 255.168.0 SwitchB(config-if)# no shutdown D.168. SwitchB(config)# interface vlan 1 SwitchB(config-if)# ip address 192.8.8.252 255.0 SwitchB(config-if)# no shutdown E.0 SwitchB(config-if)# ip default-gateway 192.0 SwitchB(config)# interface FastEthernet 0/1 SwitchB(config-if)# ip address 192.168.168.255. SwitchB(config)# ip default-network 192.254 SwitchB(config)# interface vlan 1 SwitchB(config-if)# ip address 192.252 255.254 255.255. Which set of commands is required to accomplish this task? A.168.255.255.

switch. you must configure at least one default gateway. Since this is a full duplex switch. C. Question No : 29 . In the exhibit.(Topic 2) Refer to the exhibit. More bandwidth will be required than was needed previously. For intersubnetwork communication to occur. not to forward traffic sent by devices connected to the switch. An additional broadcast domain will be created. we often use VLAN 1 as the management VLAN (but in fact it is not secure). each port is a separate collision domain. IP address utilization will be more efficient. 30 . B.(Topic 2) A switch is configured with all ports assigned to VLAN 2 with full duplex FastEthernet to segment existing departmental traffic. we can recognize that the Management Workstation is in a different subnet from the SwitchB. D. What is the effect of adding switch ports to a new VLAN on the switch? A. Traditionally. More collision domains will be created. This default gateway is used to forward traffic originating from the switch only. Question No : 30 . Answer: D Explanation: Each VLAN creates its own broadcast domain.

Machines may have been removed from a port. or moved to another port on the same switch or a different switch. C. Answer: B Explanation: This question tests the operating principles of the Layer 2 switch. switch sends broadcast to all ports except the source to find out the destination host. turned off. What will Switch-1 do with this data? A. 31 . D. Switch1 will flood the data out all of its ports except the port from which the data originated to determine which port the host is located in. Switch-1 will flood the data out all of its ports except the port from which the data originated. Switches work as follows: Switches learn the MAC addresses of PCs or workstations that are connected to their switch ports by examining the source address of frames that are received on that port. Switch-1 will send an ARP request out all its ports except the port from which the data originated. The MAC address entry is automatically discarded or aged out after 300 seconds If there is not MAC address of destination host in MAC table.Switch-1 needs to send data to a host with a MAC address of 00b0. Switch-1 will forward the data to its default gateway. Switch-1 will drop the data because it does not have an entry for that MAC address. This could cause confusion in frame forwarding. Check the MAC address table of Switch1 and find that the MAC address of the host does not exist in the table.efa4. B.d056.

(Topic 2) Which command enables RSTP on a switch? A. C. D. the VLAN ID can be determined from the source MAC address and the MAC address table.1Q trunk. Answer: B Explanation: Each VLAN resides in its own broadcast domain. spanning-tree mode mst Answer: B Explanation: 32 . Broadcast and multicast frames are retransmitted to ports that are configured on different VLAN. spanning-tree uplinkfast B. When a packet is received from an 802. Ports between switches should be configured in access mode so that VLANs can span across the ports. spanning-tree mode rapid-pvst C. B.(Topic 2) Which statement about VLAN operation on Cisco Catalyst switches is true? A. Question No : 32 . Unknown unicast frames are retransmitted only to the ports that belong to the same VLAN.In output there is no MAC address of give host so switch floods to all ports except the source port. Question No : 31 . so incoming frames with unknown destinations are only transmitted to ports that reside in the same VLAN as the incoming frame. spanning-tree backbonefast D.

1D protocol. Fa0/2.(Topic 2) Refer to the exhibit. Which three of these show the correct RSTP port roles for the indicated switches and interfaces? (Choose three. that includes the benefits of its Per-VLAN spanning tree protocols. To activate the Rapid-PVST+ protocol: switch(config)#spanning-tree mode rapid-pvst Question No : 33 . called Rapid-PVST+.1w protocol is an IEEE open implementation. No other configuration changes have been made. The RSTP 802. designated B.) A. Each of these four switches has been configured with a hostname. root 33 . Fa0/1. Cisco has its own proprietary implementation of RSTP. as well as being configured to run RSTP.Rapid Spanning Tree Protocol (RSTP) is an enhancement of the original STP 802. SwitchA. SwitchA.

“cost” is calculated based on bandwidth of the link. the lower the value of its cost. Now we come to the most difficult part of this question: SwitchB must have a root port so which port will it choose? To answer this question we need to know about STP cost and port cost. SwitchB. The higher the bandwidth on a link.C. SwitchB. SwitchD. Gi0/2. root D. In general. The receiving switch will add its local port cost value to the cost in the BPDU. Fa0/2. designated E. This can be calculated from the “cost to the root bridge” of each switch because a switch always advertises its cost to the root bridge in its BPDU. Because SwitchC is the root bridge so the 2 ports nearest SwitchC on SwitchA (Fa0/1) and SwitchD (Gi0/2) will be root ports. Now let’s have a look at the topology again 34 .B. Switch C has lowest MAC address so it will become root bridge and 2 of its ports (Fa0/1 & Fa0/2) will be designated ports. One more thing to notice is that a root bridge always advertises the cost to the root bridge (itself) with an initial value of 0. SwitchC. Below are the cost values you should memorize: SwitchB will choose the interface with lower cost to the root bridge as the root port so we must calculate the cost on interface Gi0/1 & Gi0/2 of SwitchB to the root bridge.F Explanation: The question says “no other configuration changes have been made” so we can understand these switches have the same bridge priority. root Answer: A. root F. Gi0/2. Gi0/1.

The same process happens for SwitchA and SwitchB learns that it can reach SwitchC via Gi0/2 with a total cost of 23 -> Switch B chooses Gi0/1 as its root port ->. SwitchB adds another 4 and learns that it can reach SwitchC via Gi0/1 port with a total cost of 8. Switch D adds 4 (the cost value of 1Gbps link) and advertises this value (4) to SwitchB. Now our last task is to identify the port roles of the ports between SwitchA & SwitchB.SwitchC advertises its cost to the root bridge with a value of 0. It is rather easy as the MAC address of SwitchA is lower than that of SwitchB so Fa0/2 of SwitchA will be designated port while Gi0/2 of SwitchB will be alternative port. Below summaries all the port roles of these switches: 35 .

learning and forwarding) while STP has 5 port states (blocking.1D Spanning Tree Protocol (STP). discarding D.(Topic 2) Which port state is introduced by Rapid-PVST? A. forwarding Answer: C Explanation: PVST+ is based on IEEE802. listening C. But PVST+ has only 3 port states (discarding. listening. 36 . learning B.+ DP: Designated Port (forwarding state) + RP: Root Port (forwarding state) + AP: Alternative Port (blocking state) Question No : 34 .

A frame on VLAN 1 on switch S1 is sent to switch S2 where the frame is received on VLAN 2. allowing only VLAN 2 on the destination C. So discarding is a new port state in PVST+.learning. trunk mode mismatches B. VLANs that do not correspond to a unique IP subnet 37 . native VLAN mismatches D.(Topic 2) Refer to the exhibit. What causes this behavior? A. forwarding and disabled). Question No : 35 .

Switch3 D. Switch2 C. Switch4 Answer: C Explanation: 38 . Question No : 36 . Which switch provides the spanning-tree designated port role for the network segment that services the printers? A.Answer: C Explanation: Untagged frames are encapsulated with the native VLAN. the native VLANs are different so although S1 will tag it as VLAN 1 it will be received by S2. In this case.(Topic 2) Refer to the exhibit. Switch1 B.

(Topic 2) Refer to the exhibit. 39 . 32769: 11-22-33-44-55-65 D. the priority is compared first.Bridge priority + MAC (32768.will become the target of being the root. if switches A (MAC=0200. Compare their MAC addresses. for example.1111).. 32768: 22-33-44-55-66-77 C. The Bridge priority default is 32768 and can only be configured in multiples of 4096(Spanning tree uses the 12 bits extended system ID).0000. the bridge ID contains both numbers combined together . Switch3 with a smaller MAC address will provide a designated port for printers. Decide the switch that provides the spanning-tree designated port role between Switch3 and Switch4.Printers are connected by hubs.0000. If two bridges have equal priority then the MAC addresses are compared.(Topic 2) Which switch would STP choose to become the root bridge in the selection process? A.1111) and B (MAC=0200. Each bridge has a configurable priority number and a MAC Address. Question No : 37 . 32768: 11-22-33-44-55-66 would be the bridge because it has a lower priority and MAC address. To compare two bridge IDs. 32769: 22-33-44-55-66-78 Answer: A Explanation: The root bridge of the spanning tree is the bridge with the smallest (lowest) bridge ID. 32768: 11-22-33-44-55-66 B..0200.0000. as if looking at a real number anything less than 32768.2222) both have a priority of 32768 then switch A will be selected as the root bridge. In this case. Question No : 38 . They have the same priority 32768.

(Topic 2) Cisco Catalyst switches CAT1 and CAT2 have a connection between them using ports FA0/13. B.1Q giants frames could saturate the link. C. It has more than one interface that is connected to the root network segment. Answer: D Explanation: The root bridge is determined by the lowest bridge ID.1d spanning tree. VLAN 10 is chosen as native. It is running RSTP while the elected root bridge is running 802. which is higher than the roots priority of 20481. What will happen in this scenario? A. An 802. Question No : 39 .1Q trunk is configured between the two switches. It has a higher MAC address than the elected root bridge. but on CAT2 the native VLAN is not specified. and this switch has a bridge ID priority of 32768. It has a higher bridge ID than the elected root bridge. B. D. On CAT1. 802. 40 . VLAN 10 on CAT1 and VLAN 1 on CAT2 will send untagged frames.Why has this switch not been elected the root bridge for VLAN1? A.

moving. not physical location. Question No : 41 .(Topic 2) What are three advantages of VLANs? (Choose three. “VLAN mismatch” can cause traffic from one vlan to leak into another vlan. VLANs provide a low-latency internetworking alternative to routed networks. D. or changing hosts on the network. B. VLANs utilize packet filtering to enhance network security.E. VLANs establish broadcast domains in switched networks. C. because it can better control layer2 broadcast to improve network security. Packet filtering is a function of firewall instead of VLAN. VLANs provide a method of conserving IP addresses in large networks. VLANs allow access to network services based on department. VLANs can greatly simplify adding.1Q link. This makes network more flexible and scalable. A native VLAN mismatch error message will appear. F.(Topic 2) Refer to the exhibit. Question No : 40 . VLAN 10 on CAT1 and VLAN 1 on CAT2 will send tagged frames. Answer: A. 41 .F Explanation: VLAN technology is often used in practice. D.) A. E. Answer: C Explanation: A “native VLAN mismatch” error will appear by CDP if there is a native VLAN mismatch on an 802.C.

the individual VLANs should not be listed over that trunk interface. the connection between the switches must be a trunk. The “switchport mode trunk” command is all that is needed. SwitchX(config)# interface fastethernet 0/1 SwitchX(config-if)# switchport mode trunk C. The ports only need to be connected by a crossover cable. SwitchX(config)# interface fastethernet 0/1 SwitchX(config-if)# switchport mode trunk SwitchX(config-if)# switchport trunk vlan 1 SwitchX(config-if)# switchport trunk vlan 10 SwitchX(config-if)# switchport trunk vlan 20 Answer: B Explanation: IN order for multiple VLANs to cross switches. 42 . SwitchX(config)# interface fastethernet 0/1 SwitchX(config-if)# switchport mode access SwitchX(config-if)# switchport access vlan 1 D. B.How should the FastEthernet0/1 ports on the switches that are shown in the exhibit be configured to allow connectivity between all devices? A.

duplex Answer: B Explanation: For an etherchannel to come up.(Topic 2) Why will a switch never learn a broadcast address? A. Question No : 43 . trunk encapsulation D. speed B. DTP negotiation settings C. Question No : 44 . duplex and the trunk encapsulation must be the same on each end. D.Question No : 42 . A broadcast frame is never forwarded by a switch.(Topic 2) What parameter can be different on ports within an EtherChannel? A. C. Answer: C Explanation: Switches dynamically learn MAC addresses based on the source MAC addresses that it sees.(Topic 2) 43 . Broadcast addresses use an incorrect format for the switching table. it will never learn the broadcast address. and since a broadcast is never the source. B. A broadcast address will never be the source address of a frame. Broadcast frames are never sent to switches. the speed. Broadcasts only use network layer addressing. E.

VTP is not configured to carry VLAN information between the switches. the connections between the switches must be configured as trunk ports. Switch IP addresses must be configured in order for traffic to be forwarded between the switches. 44 . what is the most likely problem? A. Answer: C Explanation: In order to pass traffic from VLANs on different switches. E. The link between the switches needs to be configured as a trunk. but none of the hosts connected to SwitchA can communicate with hosts in the same VLAN connected to SwitchB. B. C. All switch ports are assigned to the correct VLANs. D. The link between the switches is configured in the wrong VLAN.Refer to the exhibit. The access link needs to be configured in multiple VLANs. Based on the output shown.

(Topic 2) Refer to the exhibit. Answer: B Explanation: In order for hosts in the same VLAN to communicate with each other over multiple switches. Hosts in the Admin VLAN are able to communicate. The Fa0/1 port is not operational on one of the switches. At least one port needs to be configured in VLAN 1 for VLANs 10 and 15 to be able to communicate. Port FastEthernet 0/1 needs to be configured as an access link on both switches. The port-to-VLAN assignments are identical on the two switches. C. The link connecting the switches has not been configured as a trunk. The hosts in VLANs 10 and 15 on Sw11 are unable to communicate with hosts in the same VLANs on Sw12. What could be the problem? A. A router is required for hosts on SW11 in VLANs 10 and 15 to communicate with hosts in the same VLAN on Sw12.Question No : 45 . D. B. A technician is troubleshooting host connectivity issues on the switches. E. those switches need to be configured as trunks on their connected interfaces so 45 .

VTP revision number D. the port with lowest cost to the root bridge will become root port (on non-root switch).(Topic 2) What value is primarily used to determine which port becomes the root port on each nonroot switch in a spanning-tree topology? A. port priority number and MAC address Answer: A Explanation: The path cost to the root bridge is the most important value to determine which port will become the root port on each non-root switch.(Topic 2) Refer to the exhibit. lowest port MAC address C. 46 . In particular. highest port priority number E. Question No : 46 . Question No : 47 .that they can pass traffic from multiple VLANs. path cost B.

This switch must be the root bridge for all VLANs on this switch. or forwarding. E. All ports will be in a state of discarding. The command “show spanning-tree vlan 30 only shows us information about VLAN 30. which means Point-topoint environment – not a shared media. We don’t know how many VLAN exists in this switch ->. The bridge priority of this switch is 24606 which is lower than the default value bridge priority 32768. All interfaces that are shown are on shared media. C. learning. All designated ports are in a forwarding state. we see that all ports are in designated role (forwarding state). Which three statements are true? (Choose three. D.) A. F. B.The output that is shown is generated at a switch. The bridge priority is lower than the default value for spanning tree.C. The only thing we can specify is this switch is the root bridge for VLAN 3o but we cannot guarantee it is also the root bridge for other VLANs. 47 . All three interfaces on this switch have the connection type “p2p”.E Explanation: From the output. Answer: A. Thirty VLANs have been configured on this switch.

3 frame header. mainly stipulates the realization of the VLAN. Non-marked frame carries no VLAN identification information. Question No : 49 . 802. E. Answer: B.1q or the Cisco proprietary ISL.(Topic 2) Which two of these are characteristics of the 802.3u Answer: B.1Q protocol.1q C. It is a Layer 2 messaging protocol which maintains VLAN configurations across networks.1q since it is standards based and will interoperate with other vendors. C.) A. 802.E Explanation: 802. It includes an 8-bit field which specifies the priority of a frame.1Q is a standardized relay method that inserts 4 bytes field into the original Ethernet frame and re-calculate the FCS. most network engineers prefer to use 802. or Virtual Bridged Local Area Networks protocol. B. It is a trunking protocol capable of carrying untagged frames. VTP B. and thus requires that the FCS be recomputed. Generally. It modifies the 802. ISL E. IGP D.1Q frame relay supports two types of frame: marked and non-marked. It is used exclusively for tagging VLAN frames and does not address network reconvergence following switched network topology changes. D.D Explanation: Cisco switches can use two different encapsulation types for trunks.1Q protocol? (Choose two.(Topic 2) Which two link protocols are used to carry multiple VLANs over a single link? (Choose two. 802.) A.Question No : 48 . the industry standard 802. 802. 48 .

desirable E. Nonegotiate: This mode puts the port into permanent trunk mode.D Explanation: These are the different types of trunk modes: ON: This mode puts the port into permanent trunk mode and negotiates to convert the link into a trunk link. This is the default mode for Fast and Gigabit Ethernet ports. The port becomes a trunk port if the adjacent port is set to on or desirable mode. 49 . auto C. The port becomes a non-trunk port even if the adjacent port does not agree to the change. The adjacent port must be configured manually as a trunk port to establish a trunk link.(Topic 2) Refer to the exhibit. Auto: This mode enables the port to convert the link into a trunk link. forwarding Answer: B.Question No : 50 . transparent B. The port becomes a trunk port if the adjacent port is set to on. client F. on D. Desirable: This mode causes the port to actively attempt to convert the link into a trunk link. but does not allow the port to generate Dynamic Trunking Protocol (DTP) frames. desirable.(Topic 2) What are the possible trunking modes for a switch port? (Choose three. OFF: This mode puts the port into permanent non-trunk mode and negotiates to convert the link into a non-trunk link.) A. The port becomes a trunk port even if the adjacent port does not agree to the change. Question No : 51 . or auto mode.C.

Router1 and Switch2 should be connected via a crossover cable.(Topic 2) 50 .) A. Question No : 52 . B. This is known as the router on a stick configuration. Host E and host F use the same IP gateway address. D. so each one must be configured for 802.1q or ISL. for any trunk to be formed. Also. C.F Explanation: In order for multiple VLANs to connect to a single physical interface on a Cisco router. F. E. Router1 needs more LAN interfaces to accommodate the VLANs that are shown in the exhibit. Router1 will not play a role in communications between host A and host D. one for each VLAN. both ends of the trunk must agree on the encapsulation type. subinterfaces must be used. The FastEthernet 0/0 interface on Router1 must be configured with subinterfaces. The FastEthernet 0/0 interface on Router1 and the FastEthernet 0/1 interface on Switch2 trunk ports must be configured using the same encapsulation type. Answer: D.Which two statements are true about interVLAN routing in the topology that is shown in the exhibit? (Choose two.

A lower Sending Bridge ID 4. Switch4. The alternative port will surely belong to Switch4. In this specific case. But how does Switch4 select its blocked port? Well. Switch 3 has a lower bridge ID than Switch 4 (because the MAC of Switch3 is smaller than that of Switch4) so both ports of Switch3 will be in forwarding state. Switch3. which access layer switch port will assume the discarding role? A. A lower path cost to the Root 3. port Gi0/1 F.Refer to the exhibit. port fa0/12 C. A lower Root Bridge ID 2. Switch4 will need to block one of its ports to avoid a bridging loop between the two switches. port fa0/1 B. Switch3. port Gi0/2 Answer: C Explanation: In this question. all the BPDUs sent by 51 . At the end of an RSTP election process. Switch3. port fa0/11 D. Switch3. we only care about the Access Layer switches (Switch3 & 4). A BPDU is superior to another if it has: 1. A lower Sending Port ID These four parameters are examined in order. Switch4. the answer is based on the BPDUs it receives from Switch3. port fa0/2 E.

so Switch4 will compare port index values. ATM B.(Topic 2) Refer to the exhibit.Switch3 have the same Root Bridge ID. “LMI enq sent…” 52 . Question No : 53 . Switch4 will select the port connected with Fa0/1 (of Switch3) as its root port and block the other port -> Port fa0/11 of Switch4 will be blocked (discarding role). which are unique to each port on the switch. we can know that the data link protocol used in this network is the Frame Relay protocol. In this case the port priorities are equal because they use the default value. the same path cost to the Root and the same Sending Bridge ID. Frame Relay D. The only parameter left to select the best one is the Sending Port ID (Port ID = port priority + port index). HDLC C. PPP Answer: C Explanation: This question is to examine the show int command. Which WAN protocol is being used? A. and because Fa0/12 is inferior to Fa0/1. According to the information provided in the exhibit.

(Topic 2) Refer to the exhibit.1Qcompliant trunk to another switch. even though the proper cabling has been attached? A. 53 . Switch port FastEthernet 0/24 on ALSwitch1 will be used to create an IEEE 802. VLANs have not been created yet.Question No : 54 . what is the reason the trunk does not form. Based on the output shown.

E. root bridge is elected and all port roles (Root. An IP address must be configured for the port. When layer 2 is converged. C.B. Designated and Non-Designated) in all switches are selected. Question No : 55 . The port is currently configured for access mode.(Topic 2) What is one benefit of PVST+? 54 . spanned Answer: A Explanation: Spanning Tree Protocol convergence (Layer 2 convergence) happens when bridges and switches have transitioned to either the forwarding or blocking state. redundant C. by using the following command: (Config-if)#switchport mode trunk. D. provisioned D. not an access port. Question No : 56 .(Topic 2) Which term describes a spanning-tree network that has all switch ports in either the blocking or forwarding state? A. Answer: C Explanation: According to the output shown the switchport (layer 2 Switching) is enabled and the port is in access mode. The correct encapsulation type has not been configured. converged B. To make a trunk link the port should configured as a trunk port. The “no shutdown” command has not been entered for the port.

C. PVST+ reduces the CPU cycles for all the switches in the network. Reference: http://www. Each instance of PVST+ on a VLAN has a single root switch. by functions. This root switch propagates the spanning-tree information associated with that VLAN to all other switches in the network. You can create different logical topologies by using the VLANs on your network to ensure that all of your links are used but that no one link is oversubscribed.A. PVST+ supports Layer 3 load balancing without loops. to provide optimized bandwidth usage.C Explanation: A VLAN is a switched network that is logically segmented on an organizational basis. B.2 _55_se/configuration/guide/swstp.) A. allows switches to route traffic between subinterfaces E.(Topic 2) Which two benefits are provided by creating VLANs? (Choose two. PVST+ automatically selects the root bridge location. D. PVST+ allows the root switch location to be optimized per VLAN.com/en/US/docs/switches/lan/catalyst3750x_3560x/software/release/12. this process ensures that the network topology is maintained and optimized per VLAN. Answer: C Explanation: The PVST+ provides Layer 2 load-balancing for the VLAN on which it runs. contains collisions Answer: A.html Question No : 57 . or applications rather than on a physical or geographical basis. added security B.cisco. provides segmentation D. project teams. High-security users can be grouped into 55 . Security: VLANs also improve security by isolating groups. Because each switch has the same information about the network. dedicated bandwidth C.

By containing traffic originating on a particular LAN only to other LANs in the same VLAN. LAN Segmentation VLANs allow logical network topologies to overlay the physical switched infrastructure such that any arbitrary collection of LAN ports can be combined into an autonomous user group or community of interest. Question No : 58 . Question No : 59 . If the address is unknown.a VLAN. source IP address C. destination IP address E. possible on the same physical segment. destination MAC address Answer: F Explanation: When a frame is received. the switch looks at the destination hardware address and finds the interface if it is in its MAC address table. 56 .(Topic 2) Refer to the exhibit. the frame is broadcast on all interfaces except the one it was received on. The technology logically segments the network into separate Layer 2 broadcast domains whereby packets are switched between ports designated to be within the same VLAN. switched virtual networks avoid wasting bandwidth. source switch port D. destination port address F. source MAC address B.(Topic 2) What does a Layer 2 switch use to decide where to forward a received frame? A. and no users outside that VLAN can communicate with them.

Fa0/1 is connected to Switch2. FastEthernet0/5 has statically assigned MAC addresses. Interface FastEthernet0/2 has been disabled. there are multiple MAC addresses from different VLANs 57 . B.) A. Based on the output shown.Which two statements are true of the interfaces on Switch1? (Choose two. and these MAC are in different VLAN. Multiple devices are connected directly to FastEthernet0/1. seven MAC addresses correspond to Fa0/1. FastEthernet0/1 is connected to a host with multiple network interface cards. A hub is connected directly to FastEthernet0/5. Thus we know that Fa0/5 is connected to a Hub. C. FastEthernet0/1 is configured as a trunk link. F. E. From this we know that Fa0/1 is the trunk interface. However.E Explanation: Carefully observe the information given after command show. From the information given by show cdp neighbors we find that there is no Fa0/5 in CDP neighbor. D. Answer: B. F0/5 corresponds to two MAC addresses in the same VLAN.

hold down timers B. Spanning-Tree Protocol implements the 802. This algorithm guarantees that there is one and only one active path between two network 58 . switching loops.attached to the FastEthernet 0/1 interface. Question No : 60 . split horizon D. routing loops. routing loops. Only trunks are able to pass information from devices in multiple VLANs. switching loops. STP Answer: F Explanation: The Spanning-Tree Protocol (STP) prevents loops from being formed when switches or bridges are interconnected via multiple paths. STP F. routing loops. split horizon C. VTP E. switching loops.1D IEEE algorithm by exchanging BPDU messages with other switches to detect loops.(Topic 2) Based on the network shown in the graphic Which option contains both the potential networking problem and the protocol or setting that should be used to prevent the problem? A. and then removes the loop by shutting down selected bridge interfaces.

(Topic 2) At which layer of the OSI model is RSTP used to prevent loops? A.E Explanation: Example output from these two commands: 59 . network D. physical B. show ip interface brief D.) A. show interface vlan E. One of the most important fields in BPDUs is the Bridge Priority in which the MAC address is used to elect the Root Bridge -> RSTP operates at Layer 2 – Data Link layer ->. transport Answer: B Explanation: RSTP and STP operate on switches and are based on the exchange of Bridge Protocol Data Units (BPDUs) between switches. show interface interface C. show interface trunk B. Question No : 62 .(Topic 2) Which two commands can be used to verify a trunk link configuration status on a given Cisco switch interface? (Choose two. show interface switchport Answer: A. data link C.devices. Question No : 61 .

1q trunking 1 Fa0/21 auto n-802.SW3#show interface trunk Port Mode Encapsulation Status Native vlan Fa0/19 auto n-802.(Topic 2) Refer to the exhibit. What set of commands was configured on interface Fa0/3 to produce the given output? A.1q trunking 1 Port Vlans allowed on trunk Fa0/19 1-4094 Fa0/20 1-4094 Fa0/21 1-4094 Fa0/22 1-4094 SW1#show interface fast 0/2 switchport Name: Fa0/2 Switchport: Enabled Administrative Mode: dynamic desirable Operational Mode: down Administrative Trunking Encapsulation: dot1q Negotiation of TrunkinG. interface FastEthernet 0/3 60 .1q trunking 1 Fa0/22 auto n-802. On Access Mode VLAN: 1 (default) Trunking Native Mode VLAN: 1 (default) Voice VLAN: none Question No : 63 .1q trunking 1 Fa0/20 auto n-802.

Question No : 64 .(Topic 2) Refer to the exhibit.channel-group 1 mode desirable switchport trunk encapsulation dot1q switchport mode trunk B. interface FastEthernet 0/3 channel-group 2 mode on switchport trunk encapsulation dot1q switchport mode trunk Answer: B Explanation: Based on the output shown. interface FastEthernet 0/3 channel-group 2 mode passive switchport trunk encapsulation dot1q switchport mode trunk C. so only choice B is correct. 61 . the configured channel group number was 2 and the mode used was passive. interface FastEthernet 0/3 channel-group 2 mode active switchport trunk encapsulation dot1q switchport mode trunk D.

so the next step would be to check the duplex setting of the port on the other switch. A mismatched trunk encapsulation would not result in input errors and CRC errors. Question No : 65 .(Topic 2) Refer to the exhibit. what should the network administrator's next action be? A. Check the trunk encapsulation mode for SwitchA's fa0/2 port. D. B. 62 . Check the duplex mode for SwitchA's fa0/2 port.Given this output for SwitchC. Check the trunk encapsulation mode for SwitchC's fa0/1 port. Check the duplex mode for SwitchC's fa0/1 port. C. Answer: C Explanation: Here we can see that this port is configured for full duplex.

However. but pings to the other two hosts are successful. The switch interface connected to the router is down. E. But to manage switch via telnet the VLAN32 on the switch needs to be configured interface vlan32 along with ip address and its appropriate default-gateway address. Host B and the switch need to be in the same subnet. 63 . RSTP defines new port roles. Answer: D Explanation: Ping was successful form host B to other hosts because of intervlan routing configured on router. C.(Topic 2) Which two of these statements regarding RSTP are correct? (Choose two. Host B needs to be assigned an IP address in VLAN 1. What is the issue? A. Since VLAN1 interface is already configure on switch Host A was able to telnet switch. B.) A. The switch needs an appropriate default gateway assigned. D. Question No : 66 . RSTP cannot operate with PVST+. host A is unavailable.The network administrator normally establishes a Telnet session with the switch from host A. The switch interfaces need the appropriate IP addresses assigned. B. The administrator's attempt to telnet to the switch from host B fails.

but also defines status of 3 ports: discarding status. Question No : 68 .(Topic 2) 64 . D. forwarding status.1D STP. Traceroute is used to verify the router hop path traffic will take but in this case since the hosts are in the same LAN there will be no router hops involved. and makes no changes.C. learning status. RSTP defines no new port states. not revolution.(Topic 2) Which command can be used from a PC to verify the connectivity between hosts that connect through a switch in the same LAN? A. RSTP not only defines the role of other ports: alternative port and backup port. rapid spanning tree protocol (IEEE802. RSTP is 802. RSTP is a proprietary implementation of IEEE 802. referred to as RSTP) will speed up significantly the speed to re-calculate spanning tree.1D STP. traceroute address D.E Explanation: When network topology changes. Answer: B.1W. arp address Answer: A Explanation: ICMP pings are used to verify connectivity between two IP hosts. Question No : 67 . RSTP is compatible with the original IEEE 802. ping address B. It retains most of the parameters. E.1D standard evolution. tracert address C.

1w introduced an evolution of the Spanning Tree Protocol: Rapid Spanning Tree Protocol (RSTP). RSTP uses the same timer-based process as STP on point-to-point links. 802. B. E. or forwarding. While STP can take 30 to 50 seconds to transit from a blocking state to a forwarding state. D. Question No : 69 . in 2001.1Q) to be used. 802. C. RSTP also uses the STP proposal-agreement sequence.1Q Answer: D Explanation: Dynamic Trunking Protocol (DTP) is a Cisco proprietary protocol for negotiating trunking on a link between two devices and for negotiating the type of trunking encapsulation (802. discarding.D Explanation: One big disadvantage of STP is the low convergence which is very important in switched network. These ports are allowed to immediately enter the forwarding state rather than passively wait for 65 . RSTP works by adding an alternative port and a backup port compared to STP. learning. RSTP provides a faster transition to the forwarding state on point-to-point links than STP does. 802.(Topic 2) Which three statements about RSTP are true? (Choose three. RSTP port states are blocking.B.3ad B. 802.1w C. which significantly reduces the convergence time after a topology change occurs in the network. the IEEE with document 802.Which IEEE standard protocol is initiated as a result of successful DTP completion in a switch over Fast Ethernet? A. To overcome this problem. RSTP significantly reduces topology reconverging time after a link failure.) A. F. RSTP expands the STP port roles by adding the alternate and backup roles.1D D. RSTP is typically able to respond less than 10 seconds of a physical link failure. Answer: A.

The alternative port moves to the forwarding state if there is a failure on the designated port for the segment. the switch with the lowest IP address Answer: B Explanation: Each switch in your network will have a Bridge ID Priority value.768 and a MAC address of 11-22-33-44-55-66. The backup port applies only when a single switch has two links to the same segment (collision domain). Assuming the default switch configuration.(Topic 2) Three switches are connected to one another via trunk ports. more commonly referred to as a BID. Question No : 70 . RSTP bridge port roles: * Root port – A forwarding port that is the closest to the root bridge in terms of path cost * Designated port – A forwarding port for every LAN segment * Alternate port – A best alternate path to the root bridge. the MAC address is the deciding factor in the root bridge election. This BID is a combination of a default priority value and the switch's MAC address. the switch must be attached to a hub. * Backup port – A backup/redundant path to a segment where another bridge port already connects. which switch is elected as the root bridge for the spanning-tree instance of VLAN 1? A. if a Cisco switch has the default priority value of 32. the switch with the lowest MAC address C.the network to converge. the switch with the highest MAC address B. the BID would be 32768:11-22-33-44-55-66. * Disabled port – Not strictly part of STP. The lowest BID will win the election process. 66 . a network administrator can manually disable a port. To have two links to the same collision domain. the switch with the highest IP address D. if the switch priority is left at the default. This path is different than using the root port. For example. Therefore. with the priority value listed first.

a method of VLAN trunking C.1Q standard describe? A. the operation of VTP B. one switch must send frames to another switch and indicate which VLAN a particular frame belongs to. what does the IEEE 802.(Topic 2) What is the function of the command switchport trunk native vlan 999 on a Cisco Catalyst switch? A. C. It blocks VLAN 999 traffic from passing on the trunk. To accomplish this. Answer: B Explanation: Configuring the Native VLAN for Untagged Traffic A trunk port configured with 802. an approach to wireless LAN communication D.Question No : 71 . the process for root bridge selection E. The native VLAN is VLAN 1 by default. It designates VLAN 999 for untagged traffic. a trunk link is created to accomplish this 67 .(Topic 2) In a switched environment. B. On Cisco switches. Question No : 72 . the switch forwards untagged traffic in the native VLAN configured for the port. D. It creates a VLAN 999 interface. VLAN pruning Answer: B Explanation: A broadcast domain must sometimes exist on more than one switch in the network. By default.1Q tagging can receive both tagged and untagged traffic. It designates VLAN 999 as the default for all unknown tagged traffic.

1Q for FastEthernet and Gigabit Ethernet interfaces. a network administrator can define a VLAN topology to span multiple physical devices. Question No : 73 . ISL and IEEE 802. The IEEE 802. An 802. The router will not accept the addressing scheme. E.1Q.1Q trunk link provides VLAN identification by adding a 4-byte tag to an Ethernet Frame as it leaves a trunk port. routers. and servers. D. The router interfaces must be encapsulated with the 802. The exhibit represents this design. With 802. C. Answer: C 68 . This design will function as intended. with all hosts configured in the same VLAN. Cisco switches support IEEE 802.VLAN identification.(Topic 2) Refer to the exhibit.1Q protocol interconnects VLANs between multiple switches.1Q are different methods of putting a VLAN identifier in a Layer 2 frame. The connection between switches should be a trunk. Spanning-tree will need to be used.1Q protocol. What conclusions can be made about this design? A. B. A network technician is asked to design a small network with redundancy.

The 802. STP (802.(Topic 2) Which two states are the port states when RSTP has converged? (Choose two. listening C. blocking. disabled Answer: A. discarding B. the router will not accept it and show error when the administrator assigns it.1D disabled.1D) Port State RSTP (802.1w) Port State Is Port Included in Active Topology? Is Port Learning MAC Addresses? Disabled Discarding No No Blocking Discarding No No Listening Discarding Yes 69 .D Explanation: There are only three port states left in RSTP that correspond to the three possible operational states. Question No : 74 . If two interfaces are in the same network.1w discarding state. learning D. and listening states are merged into a unique 802.) A. forwarding E.Explanation: Each interface on a router must be in a different network.

cisco. 802. Question No : 76 .D Explanation: This question is to examine the STP protocol. 802.1q is a Frame Relay protocol which belongs to VLAN.) A. STP E.com/en/US/tech/tk389/tk621/technologies_white_paper09186a0080094cf a.1q D. SAP Answer: A. SAP is a concept of the OSI model.No Learning Learning Yes Yes Forwarding Forwarding Yes Yes Reference: http://www.1d B.1d) is used to prevent Layer 2 loops.(Topic 2) 70 . VTP C.(Topic 2) Which two protocols are used by bridges and/or switches to prevent loops in a layer 2 network? (Choose two. STP (802. 802.shtml#states Question No : 75 .

The command is accepted and the respective VLAN is added to vlan. What happens if you set the switchport access vlan 3 command in interface configuration mode? A. The command is rejected.(Topic 2) VLAN 3 is not yet configured on your switch. B.dat. six D. twelve Answer: A Explanation: Only router can break up broadcast domains but in this exhibit no router is used so there is only 1 broadcast domain. 71 .Refer to Exhibit: How many broadcast domains are shown in the graphic assuming only the default VLAN is configured on the switches? A. one B. two C. The port turns amber. there are 7 collision domains in this exhibit (6 collision domains between hubs & switches + 1 collision between the two switches). C. For your information. Question No : 77 .

Answer: A. 802. Switches can forward Layer 2 frame from Native VLAN on unmarked trunks port. 802.1Q trunks can use 10 Mb/s Ethernet interfaces. If the Native VLAN in 802. 802.(Topic 2) Refer to the exhibit. 802.1Q trunking are correct? (Choose three.D. Native VLAN is the default VLAN configuration of port.1Q trunk ports on same trunk link is properly configured. 802.1Q trunk ports between two devices.C. Note for the 802. point-to-point connectivity. Receiver switches will transmit all unmarked packets to Native VLAN.1Q trunks require full-duplex.1Q native VLAN frames are untagged by default. The 802. D. Answer: C Explanation: The “switchport access vlan 3” will put that interface as belonging to VLAN 3 while also updated the VLAN database automatically to include VLAN 3. it could lead to layer 2 loops. The command is accepted and you must configure the VLAN manually. B.(Topic 2) Which three of these statements regarding 802. the same Native VLAN configuration is required on both sides of the link.1Q trunk defined Native VLAN in order to forward unmarked frame.E Explanation: By default.) A. Question No : 78 . C. E.1Q trunk link transmits VLAN information through Ethernet.1Q trunking ports can also be secure ports. 802. Question No : 79 .1Q trunks should have native VLANs that are the same at both ends. 72 .

D. 73 . C. we must assume that there is a shorter path to the root bridge elsewhere. Answer: C Explanation: Since the port is in the blocked status. This switch has a lower bridge ID for VLAN 2 than the elected designated switch.(Topic 2) Refer to the topology shown in the exhibit. This switch interface has a higher path cost to the root bridge than another in the topology. what is the reason that interface FastEthernet 0/10 is not the root port for VLAN 2? A.Given the output shown from this Cisco Catalyst 2950.1d Spanning Tree. This switch is running RSTP while the elected designated switch is running 802. B. Question No : 80 . This switch has more than one interface connected to the root network segment in VLAN 2.

Switch A . The three switches in the figure all have the default priority.Which three ports will be STP designated ports if all the links are operating at the same bandwidth? (Choose three. Select the root port on the non-root bridge. because it has the smallest MAC address.) A. First. compare the path cost. Switch B . the smallest will be selected. 74 .Fa0/1 E. select the root bridge. then compare the BID. select the Designated Port. Bridge-id= bridge priority + MAC address. Switch A .Fa0/0 D.Fa0/1 C. 3. Switch C . The DP on the link between SwitchA and SwitchC is SwitchA'Fa0/1.C. Each link has a DP. still the smallest will be selected. 2. Switch B . it is easy to find that SwitchB is the root bridge. so we should compare the MAC address. if the costs happen to be the same.Fa0/0 F. 1.Fa0/1 Answer: B. Switch C . which can be completed through comparing root path cost. The smallest will be selected as the root port. Based on the exhibit above. we can find DP on each link.D Explanation: This question is to check the spanning tree election problem.Fa0/0 B. Next. First. which can be accomplished by comparing the bridge ID.

thereby encourage better control of multicast traffic as well as broadcast domains. Better management A VLAN typically solve the scalability issues that exist in a large network by breaking the main domain into several VLAN groups or smaller broadcast configurations. Enhances performance A more efficient use of bandwidth can be achieved allowing many logical networks to use the same network infrastructure. and host reconfigurations is now a thing of the past.Question No : 81 . G. thanks to 802. and moves can be attained simply by making necessary configurations on the VLAN port. thus reducing their size. 4. because the VLANs all belong to the same broadcast domain. a router is added and workgroups relocated into centralized locations. F.) A. Broadcast storms can be mitigated by increasing the number of broadcast domains.D Explanation: Benefits of VLANs VLAN is a network structure which allows users to communicate while in different locations by sharing one multicast domain and a single broadcast.(Topic 2) What are three benefits of implementing VLANs? (Choose three. A higher level of network security can be reached by separating sensitive data traffic from other network traffic. C. D. 3. E. Time-consuming. because network configuration can be made at ease when need arises. Answer: A. 1. Broadcast storms can be mitigated by decreasing the number of broadcast domains. 2. A more efficient use of bandwidth can be achieved allowing many physical groups to use the same network infrastructure. For instance. On the other hand. thus increasing their size. Improves network security High-security can be positioned in different VLAN groups to ensure that non-members cannot receive their broadcasts. A more efficient use of bandwidth can be achieved allowing many logical networks to use the same network infrastructure. VLANs make it easier for IT staff to configure new logical groups. Port-based VLANs increase switch-port use efficiency. B.C. They provide numerous networking benefits and have become popular in the market. adds. readdressing. it helps reduce administrative costs when users are geographically dispersed. 75 .1Q trunks. Inexpensive The popularity of VLANs is due to the fact that changes.

6. Each VLAN creates a separate. interface FastEthernet 0/1 channel-group 1 mode active switchport trunk encapsulation dot1q switchport mode trunk interface FastEthernet 0/2 channel-group 1 mode active 76 . Better administration VLANs facilitate grouping of multiple geographical stations.5. When VLAN users move to another physical location. the network does not have to be configured.(Topic 2) Refer to the exhibit. Question No : 82 . The SW1 configuration is shown. They are popularly used to reduce broadcast traffic. A network administrator is configuring an EtherChannel between SW1 and SW2. smaller broadcast domain. Segment multiple networks VLANs are typically used to achieve multiple purposes. What is the correct configuration for SW2? A.

interface FastEthernet 0/1 channel-group 1 mode desirable switchport trunk encapsulation dot1q switchport mode trunk interface FastEthernet 0/2 channel-group 1 mode desirable switchport trunk encapsulation dot1q switchport mode trunk D. interface FastEthernet 0/1 channel-group 1 mode passive switchport trunk encapsulation dot1q switchport mode trunk interface FastEthernet 0/2 channel-group 1 mode passive switchport trunk encapsulation dot1q switchport mode trunk Answer: C Explanation: If the etherchannel was configured with mode “auto”. it was using PagP.switchport trunk encapsulation dot1q switchport mode trunk B.(Topic 2) A network administrator creates a layer 3 EtherChannel. bundling four interfaces into channel group 1. so. we need to configure the other switch with “desirable” mode. On what interface is the IP address configured? 77 . PagP modes: auto | Desirable LACP modes: active | pasive Question No : 83 . interface FastEthernet 0/1 channel-group 2 mode auto switchport trunk encapsulation dot1q switchport mode trunk interface FastEthernet 0/2 channel-group 2 mode auto switchport trunk encapsulation dot1q switchport mode trunk C.

you can remain in interface configuration mode and enable other supported interface commands to meet The IP address is assigned to the port channel interface.html Question No : 84 . Reference: http://www. Optionally. the port-channel 1 interface B.(Topic 2) 78 . the highest number member interface C. use the following steps beginning in global configuration mode: Command Purpose Step 1 Router(config)# interface port-channel channel-number Router(config-if)# Creates the EtherChannel interface.cisco. not the underlying physical member interfaces. the lowest number member interface Answer: A Explanation: To create an EtherChannel interface and assign its IP address and subnet mask.com/c/en/us/td/docs/switches/lan/catalyst2948gand4908g/120_7_w5_15d/configuration/guide/config/ether_ch. You can configure up to 16 FECs and 1 GEC on the Catalyst 2948G-L3 and up to 4 GECs on the Catalyst 4908G-L3. Step 3 Router(config-if)# exit Router(config)# Exits this mode. Step 2 Router(config-if)# ip address ip-address subnet-mask Assigns an IP address and subnet mask to the EtherChannel interface. all member interfaces D.A.

596d. Fa0/11 is the root port so we can confirm this switch is not the root bridge ->. SwitchA has one Root port and 1 Alternative port so it is not the root bridge. B. VLAN 20 is running the Per VLAN Spanning Tree Protocol. 0017. D. Question No : 85 .596d.596d. Answer: D Explanation: Only non-root bridge can have root port. not PVST ->. SwitchA is not the root bridge. C. not of the root bridge. The MAC address of the root bridge is 0017.(Topic 2) 79 . The MAC address of the root bridge is 0017. Which statement is true? A.2a00 ->.Refer to the exhibit. The Fa0/11 role confirms that SwitchA is the root bridge for VLAN 20. because not all of the interface roles are designated.1580 is the MAC address of this switch. From the output we learn this switch is running Rapid STP. All of the interface roles of the root bridge are designated.1580.

They increase the number of broadcast domains while decreasing the size of the broadcast domains. VLANs increase the number of broadcast domains while decreasing the size of the broadcast domains which increase the utilization of the links. B. on D. auto C.C. forwarding Answer: B.) A.Which of the following are benefits of VLANs? (Choose three. transparent B. blocking F. They can enhance network security. It is also a big advantage of VLAN ->.E Explanation: When using VLAN the number and size of collision domains remain the same ->. Question No : 86 . They increase the size of broadcast domains while decreasing the number of collision domains.(Topic 2) Which three are valid modes for a switch port used as a VLAN trunk? (Choose three. They allow logical grouping of users by function. VLANs allow to group users by function.D Explanation: 80 . They simplify switch administration. F.C.) A. VLANs help minimize the incorrect configuration of VLANs so it enhances the security of the network ->. Answer: B. desirable E. VLAN increases the size of broadcast domains but does not decrease the number of collision domains ->. C. E. D. not by location or geography ->. VLANs are useful but they are more complex and need more administration ->. They increase the size of collision domains.

or auto mode. which VLAN range can be added. 1 through 1002 D. but does not allow the port to generate Dynamic Trunking Protocol (DTP) frames. The port becomes a trunk port if the adjacent port is set to on. Desirable: This mode causes the port to actively attempt to convert the link into a trunk link. desirable. The port becomes a trunk port if the adjacent port is set to on or desirable mode. and removed on a Cisco switch? A. It always exists and cannot be added. Auto: This mode enables the port to convert the link into a trunk link. The port becomes a non-trunk port even if the adjacent port does not agree to the change. Question No : 87 . Nonegotiate: This mode puts the port into permanent trunk mode. The adjacent port must be configured manually as a trunk port to establish a trunk link. The port becomes a trunk port even if the adjacent port does not agree to the change. 2 through 1005 Answer: B Explanation: Explanation VLAN 1 is the default VLAN on Cisco switch. 2 through 1001 C. OFF: This mode puts the port into permanent non-trunk mode and negotiates to convert the link into a non-trunk link.(Topic 2) Assuming the default switch configuration.These are the different types of trunk modes: ON: This mode puts the port into permanent trunk mode and negotiates to convert the link into a trunk link. modified. 81 . This is the default mode for Fast and Gigabit Ethernet ports. 1 through 1001 B. modified or removed. VLANs 1002-1005 are default VLANs for FDDI & Token Ring and they can’t be deleted or used for Ethernet.

Ping.(Topic 3) Which command would you use on a Cisco router to verify the Layer 3 path to a host? A. telnet address D. on the other hand. tracert address B. The history of the route is recorded as the round-trip times of the packets received from each successive host (remote node) in the route (path). Traceroute proceeds unless all (three) sent packets are lost more than twice. then the connection is lost and the route cannot be evaluated. traceroute is a computer network diagnostic tool for displaying the route (path) and measuring transit delays of packets across an Internet Protocol (IP) network. traceroute address C. ssh address Answer: B Explanation: In computing.Topic 3. Routing Technologies Question No : 88 . the sum of the mean times in each hop indicates the total time spent to establish the connection. only computes the final round-trip times from 82 .

When running OSPF.(Topic 3) Refer to the exhibit.(Topic 3) 83 . B. Route summarization is enabled on both routers. Answer: B Explanation: To form an adjacency (become neighbor). The process identifier on router A is different than the process identifier on router B. D.the destination point. Question No : 89 . Dead interval and AREA numbers Question No : 90 . router A & B must have the same Hello interval. C. The loopback addresses are on different subnets. The values of the dead timers on the routers are different. what would cause router A not to form an adjacency with router B? A.

link reliability too low F. incompatible IP address B. incompatible encapsulation E. identify the fault on the Brevard router that is causing the lack of connectivity. Question No : 91 .10.1 And Interface Serial 1 of Router Brevard has 192.11.168. IPCP closed Answer: D Explanation: Because Interface Serial 0 of Atlanta Router has 192.) A. but they are unable to communicate. incorrect subnet mask D. The Atlanta router is known to have the correct configuration. Given the partial configurations.2.Two routers named Atlanta and Brevard are connected via their serial interfaces as illustrated. to decrease latency by increasing bandwidth 84 .(Topic 3) Why do large OSPF networks use a hierarchical design? (Choose three. These are from different network.168. insufficient bandwidth C. A.

to confine network instability to single areas of the network E. reduced routing overhead. Router# show ip eigrp topology C.C. to reduce routing overhead C. Attached to that backbone via area border routers (ABRs) are a number of secondary tier areas. Question No : 92 . Router# show ip eigrp adjacency B. which shows the number of queued EIGRP packets) for the adjacent routers are listed: 85 .D Explanation: OSPF implements a two-tier hierarchical routing model that uses a core or backbone tier known as area zero (0). Router# show ip eigrp neighbors Answer: D Explanation: Below is an example of the show ip eigrp neighbors command. to lower costs by replacing routers with distribution layer switches Answer: B. to reduce the complexity of router configuration F. The retransmit interval and the queue counts for the adjacent routers also need to be checked.(Topic 3) A network administrator is troubleshooting an EIGRP problem on a router and needs to confirm the IP addresses of the devices with which the router has established adjacency. to speed up convergence D. The retransmit interval (Smooth Round Trip Timer – SRTT) and the queue counts (Q count. The hierarchical approach is used to achieve the following: • Rapid convergence because of link and/or switch failures • Deterministic traffic recovery • Scalable and manageable routing hierarchy. What command will display the required information? A. Router# show ip eigrp interfaces D.B.

64/29 & 10.4.5.2 C.1.5.3. According to the routing table.Question No : 93 . 10.3.1.1. 86 .(Topic 3) Refer to the exhibit.64/28.3 ->.1.1.1. 10.3 D. where will the router send a packet destined for 10.4 Answer: C Explanation: The destination IP address 10.1.64/27 subnets but the “longest prefix match” algorithm will choose the most specific subnet mask -> the prefix “/29 will be chosen to route the packet.1.65 belongs to 10.2. Therefore the next-hop should be 10. 10.5.1.5. 10.1. 10.2 B.5.65? A.1.

it can be argued that it is more secure (and more prone to human errors) since the network administrator will need to make changes to the routing table directly. Answer: B. in stub networks where there is only a single uplink connection.(Topic 3) Which two are advantages of static routing when compared to dynamic routing? (Choose two. Routing traffic load is reduced when used in stub network links. Routing updates are automatically sent to neighbors.) A. the load is reduced as stub routers just need a single static default route. Security increases because only the network administrator may change the routing table. Question No : 95 . C.Question No : 94 . D. B. using automatic updates.G Explanation: Since static routing is a manual process.(Topic 3) Refer to the exhibit. Also. Configuration complexity decreases as network size increases. Routing tables adapt automatically to topology changes. An efficient algorithm is used to build routing tables. instead of many routes that all have the same next hop IP address. F. Route summarization is computed automatically by the router. 87 . E. G.

E. It configures the virtual terminal lines with the password 030752180500. It configures SSH globally for all logins. 88 . there are a total of 8 MB. 8 MB Answer: B Explanation: In this example. D. 4 MB C.The technician wants to upload a new IOS in the router while keeping the existing IOS. 5 MB D. 3 MB B. C. What is the maximum size of an IOS file that could be loaded if the original IOS is also kept in flash? A. B. but 3. It configures a Cisco network device to use the SSH protocol on incoming communications via the virtual terminal ports. 7 MB E.8 are being used already. so another file as large as 4MB can be loaded in addition to the original file. What is the effect of the configuration that is shown? A. It allows seven failed login attempts before the VTY lines are temporarily shutdown. It tells the router or switch to try to establish an SSh connection first and if that fails to use Telnet. Question No : 96 .(Topic 3) Refer to the exhibit.

0 0.(Topic 3) Refer to the exhibit.255.1.1.Answer: D Explanation: Secure Shell (SSH) is a protocol which provides a secure remote access connection to network devices.16.2 B.0 255. Communication between the client and server is encrypted in both SSH version 1 and SSH version 2.com/warp/public/707/ssh.0. The speed of all serial links is E1 and the speed of all Ethernet links is 100 Mb/s.252 128. ip route 0.shtml Question No : 97 .0.0.0.0.107. Reference: www.1 C.0.0.255.0.255.255. If you want to prevent non-SSH connections.cisco. What configuration on the Manchester router will establish a route toward the Internet for traffic that originates from workstations on the Manchester LAN? A.0 255.0 128. ip route 0.100. A static route will be established on the Manchester router to direct traffic toward the Internet over the most direct path available. add the “transport input ssh” command under the lines to limit the router to SSH connections only. Straight (non-SSH) Telnets are refused.107.0 172.1 89 . ip route 0.

ip route 0.16. when a dynamic protocol is also being used? A.D.0 0.0.100.(Topic 3) Which parameter would you tune to affect the selection of a static route as a backup. According to exhibit. link bandwidth D.0. link delay E. hop count B. You should generally only use default routing on stub networks—those with only one exit path out of the network.2 Answer: E Explanation: We use default routing to send packets with a remote destination network not in the routing table to the next-hop router. ip route 0.0.100. you need to increase the AD of the static route so that it is higher than the dynamic routing protocol. all traffic towards Internet that originates from workstations should forward to Router R1.0. If you want to have the dynamic routing protocol used and have the static route be used only as a backup. Syntax for default route is: ip route <Remote_Network> <Netmask> <Next_Hop_Address>.1 E.0.255.0.0 172.255 172.2 F. Question No : 98 .100.16.255.0. meaning it will be preferred over all dynamic routing protocols. link cost Answer: B Explanation: By default the administrative distance of a static route is 1.0.0 255. administrative distance C. 90 .0 172.0.0.0 0. ip route 0.16.

line protocol down"? A. C. If you interface is down. It routes over links rather than over networks. D. It supports up to 2 instances of OSPFv3 over a common link. Question No : 100 . The interface needs to be configured as a DTE device. it will display administratively down status. The interface has been configured with the shutdown command.D 91 . You can bring up an interface having administratively down interface using no shutdown command. B. E. D. There is no encapsulation type configured.) A. What is the reason that the interface status is "administratively down. F. The wrong type of cable is connected to the interface. The interface is not receiving any keepalives. It requires the use of ARP.(Topic 3) Refer to the exhibit. B. It can support multiple IPv6 subnets on a single link.(Topic 3) What are two enhancements that OSPFv3 supports over OSPFv2? (Choose two. C. Answer: B. There is a mismatch in encapsulation types.Question No : 99 . Answer: D Explanation: Interfaces can be enabled or disabled with shutdown/no shutdown command.

it will be blocked by STP. changed state to administratively down”. Question No : 102 . Remote access management of this switch will not be possible without configuration change. Which of these statements correctly describes the state of the switch once the boot process has been completed? A. Hence remote management of this switch is not possible unless VLAN1 is brought back up. C.Question No : 101 . B. Answer: B Explanation: Notice the line. The switch will need a different IOS code in order to support VLANs and STP.) 92 . As FastEthernet0/12 will be the last to come up. This shows that VLAN1 is shut down. D.(Topic 3) Refer to the exhibit.(Topic 3) Which characteristics are representatives of a link-state routing protocol? (Choose three. Since VLAN1 is the only interface shown in the output. you have to assume that no other VLAN interface has been configured with an IP Address. More VLANs will need to be created for this switch. which says “Interface VLAN1.

0.3 Drag each destination IP address on the left to its correct next hop address on the right. Question No : 103 DRAG DROP . Unlike Distance vector routing protocol (which utilizes frequent periodic updates).0.1 Local(config)# ip route 10.168.D Explanation: Each of routers running link-state routing protocol learns paths to all the destinations in its “area” so we can say although it is a bit unclear.1.0 192. exchanges routing tables with neighbors C.255.255. Link-state routing protocols generate routing updates only (not the whole routing table) when a change occurs in the network topology so Link-state routing protocol like OSPF uses Dijkstra algorithm to calculate the shortest path >.A.0. calculates shortest path D. utilizes frequent periodic updates Answer: A.1.(Topic 3) Routing has been configured on the local router with these commands: Local(config)# ip route 0.0 255. link-state routing protocol utilizes event-triggered updates (only sends update when a change occurs) ->.0 0. provides common view of entire topology B.0. utilizes event-triggered updates E.C.3.2 Local(config)# ip route 10.168.0 192.0 192.0 255.0.1.0. 93 .255.0.2.168.

Answer: Explanation: 94 .

This is called the “longest match” rule. 95 .(Topic 3) Refer to the exhibit.If we have many entries matching for next hop ip address then the router will choose the one with most specific path to send the packet. the route with the most bits in the mask set to “1 will be chosen to route packet. Question No : 104 .

The router will forward packets from R3 to R2 to R1 AND from R3 to R1. C. B.168.192/26 LAN be forwarded to 192.168. Answer: C Explanation: From the routing table we learn that network 192. The router will forward packets from R3 to R1. The router will forward packets from R3 to R2 to R1. D.168.168. The router will forward packets from R3 to R1 to R2.9 &192.(Topic 3) 96 .168.5) -> traffic to this network will be load-balancing.0/30 is learned via 2 equal-cost paths (192.10. Question No : 105 . how will packets from a host within the 192.10.10.Based on the exhibited routing table.10.1? A.10.

Refer to the exhibit. Question No : 106 .1 C.) A.3 Answer: C Explanation: The highest IP address of all loopback interfaces will be chosen -> Loopback 0 will be chosen as the router ID.2 B. if the router ID has not been manually set. 192. Given the output for this command. LSAs from other routers D.1. beacons received on point-to-point links E.154. 10.168.1 D. hello packets B.16. TTL packets from designated routers Answer: A.(Topic 3) What information does a router running a link-state protocol use to build and maintain its topological database? (Choose two.5. 172.5.1. what router ID will OSPF use for this router? A.154. SAP messages sent by other routers C. 10. routing tables received from other link-state routers F.C Explanation: 97 .

255.255.0.0 255.0. network 0.0. The protocol will define a Hello packet format and a procedure for exchanging the packets and processing the information the packets contain. but if an IP address is enabled on any interface.0.0 255. a Hello protocol is used for this step.0. Question No : 107 .255.255 area 0 dictates that you do not care (255. The network command network 0.0.(Topic 3) What OSPF command.ciscopress.255.com/articles/article. the advertisements are sent to every neighbor. network 255.0 255.255. After the adjacencies are established.255. will include all interfaces into area 0? A.0 area 0 D. each received LSA is copied and forwarded to every neighbor except the one that sent the LSA.255.255 0. the routers may begin sending out LSAs.0 0.255. Example 3-1 Configuring OSPF in a Single Area router ospf 1 network 0.0.(Topic 3) 98 .0. In turn.255) what the IP address is. In keeping with the friendly neighbor terminology.255. As the term flooding implies.0.0 area 0 C. network all-interfaces area 0 Answer: A Explanation: Example 3-1 displays OSPF with a process ID of 1 and places all interfaces configured with an IP address in area 0.255 area 0 Reference: http://www.asp?p=26919&seqNum=3 Question No : 108 . network 0.0.0. place it in area 0.255.Neighbor discovery is the first step in getting a link state environment up and running. when configured.0.255 area 0 B.

(Topic 3) 99 .l23-16a. If the flash does not have enough space you will see an error message like this: %Error copying tftp://192. The router cannot verify that the Cisco IOS image currently in flash is valid. C. the router asked “Erasing flash before copying? [confirm]” and the administrator confirmed (by pressing Enter) so the flash was deleted. Erasing current flash content is requested during the copy dialog.Refer to the exhibit.bin (Not enough space on device) Question No : 109 DRAG DROP . The current IOS is deleted just because the administrator wants to do so. Flash memory on Cisco routers can contain only a single IOS image.168.167/ c1600-k8sy-mz.2. Why is flash memory erased prior to upgrading the IOS image from the TFTP server? A. In order for the router to use the new image as the default. the flash has enough space to copy a new IOS without deleting the current one. D. Answer: C Explanation: During the copy process. B. it must be the only IOS image in flash. Note: In this case.

It inspects the configuration file in NVRAM for boot instructions. C. It loads the first image file in flash memory.(Topic 3) A Cisco router is booting and has just completed the POST process.) Answer: Question No : 110 . (Not all options are used. It attempts to boot from a TFTP server. B. What function does the router perform next? A. It is now ready to find and load an IOS image. D.Drag the Cisco default administrative distance to the appropriate routing protocol or route. It checks the configuration register. Answer: A Explanation: Default (normal) Boot Sequence 100 .

19.19.0 0. These commands need to be added to the configuration: C-router(config)# router ospf 1 C-router(config-router)# network 172.19. Question No : 111 .0.0 D.255 area 0 C.Check configuration register to see what mode the router should boot up in (usually 0x2102 to read startupconfig in NVRAM / or 0x2142 to start in "setup-mode") .0.0. These commands need to be added to the configuration: C-router(config)# router eigrp 123 C-router(config-router)# network 172. Answer: D 101 . All the interfaces have been properly configured and IP routing is operational. C-router is to be used as a "router-on-a-stick" to route between the VLANs. What is true about this configuration? A. No further routing configuration is required.load IOS from Flash. The hosts in the VLANs have been configured with the appropriate default gateway.Power on Router .Router does POST .check the startup-config file in NVRAM for boot-system commands . These commands need to be added to the configuration: C-router(config)# router rip C-router(config-router)# network 172.Bootstrap starts IOS load .0.(Topic 3) Refer to the exhibit.3.0 B.

2 Answer: D Explanation: If a router-id is not configured manually in the OSPF routing process the router will automatically configure a router-id determined from the highest IP address of a logical interface (loopback interface) or the highest IP address of an active interface. 2.2. what value will OSPF use as its router ID? A.1 B.1. If the router Cisco returns the given output and has not had its router ID set manually.168. all traffic destined to a different VLA will be sent to the C-router. Question No : 112 . no routing protocols need to be configured. the router will compare the IP addresses of each of 102 .2.(Topic 3) Refer to the exhibit.1 C.Explanation: Since all the same router (C-router) is the default gateway for all three VLANs.16. 192. If more than one loopback interfaces are configured.1.1 D.1. Since the C-router already knows how to get to all three networks.1. The C-router will have knowledge of all three networks since they will appear as directly connected in the routing table. 172. 1.

120) (Process ID 1) Next. Also the router will chose the highest loopback interface as its OSPF router ID (if available).(Topic 3) If IP routing is enabled.11212460x80000234 0x009CAC1 10. It should be the same on all routers in an OSPF routing instance.1131480x8000022C0x0043993 10.) A. D.0. It is created using the MAC Address of the loopback interface. E. who are the other routers in our area? Router Link States (Area 1) Link IDADV RouterAgeSeq#ChecksumLink count 10.1116000x8000023A 0x0092B31 10. the lowest IP address on the router becomes the OSPF Router ID.0. C.0.0.the interfaces and choose the highest IP address from the loopbacks.11210. Question No : 114 .0. The router automatically chooses the IP address of a loopback as the OSPF Router ID.1201520x800002400x0046CB1 We can see OSPF Router ID will be used as source of Type 1 LSA.12010.0. It identifies the source of a Type 1 LSA.0.0.0.D Explanation: r120#show ip ospf data OSPF Router with ID (10.11310. B.0.0.0.0. Question No : 113 .0. By default. Answer: A.(Topic 3) Which two statements about the OSPF Router ID are true? (Choose two.11110.0.0.0.) 103 .0. which two commands set the gateway of last resort to the default gateway? (Choose two.

1 0.0.1 Answer: C.16.0. show protocols B.0. show version Answer: B Explanation: The “show process” (in fact.0. ip route 172. Below shows the output of this command (some next pages are omitted).0 172.0.2. ip default-route 0.0.0. ip default-network 0. show process C.0.0 C.(Topic 3) Which command displays CPU utilization? A.0 0.0.0.0.0.16.16.0 D. the full command is “show processes”) command gives us lots of information about each process but in fact it is not easy to read.0 B. ip route 0. ip default-gateway 0.E Explanation: Both the “ip default-network” and “ip route 0. Question No : 115 . 104 .0.0.2.2. show system D.0.0.1 E.0 (next hop)” commands can be used to set the default gateway in a Cisco router.0 0.0.0 0.0 172.0.0.A.0 0.0.

A more friendly way to check the CPU utilization is the command “show processes cpu history”. and 72 hours are clearly shown: 105 . one hour. in which the total CPU usage on the router over a period of time: one minute.

B. For example.(Topic 3) Which statements describe the routing protocol OSPF? (Choose three. Question No : 116 .+ The Y-axis of the graph is the CPU utilization. from the last graph (last 72 hours) we learn that the highest CPU utilization within 72 hours is 37% about six hours ago. 106 . + The X-axis of the graph is the increment within the period displayed in the graph.) A. It is used to route between autonomous systems. It supports VLSM.

E. a command that is implemented in all foreign and domestic IOS versions C. F.C. OSPF has introduced new concepts such as authentication of routing updates. it is applied to the running configuration file that is currently running in ram. a command that can be entered in any configuration mode Answer: A Explanation: When you enter global configuration mode and enter a command. and so forth. It confines network instability to one area of the network. a command that is available in every release of IOS. Answer: A. OSPF uses flooding to exchange link-state updates between routers. Any change in routing information is flooded to all routers in the network. route summarization. Question No : 118 .C. which is a departure from the Bellman-Ford vector based algorithms used in traditional Internet routing protocols such as RIP.E Explanation: The OSPF protocol is based on link-state technology. The configuration of a global command affects the entire router. It is simpler to configure than RIP v2. An example of a global command is one used for the hostname of the router. a command that is universal in application and supports all protocols D.(Topic 3) What is a global command? A.(Topic 3) 107 . Variable Length Subnet Masks (VLSM). a command that is set once and affects the entire router B. regardless of the version or deployment status E. It increases routing overhead on the network. Question No : 117 . D. Areas are introduced to put a boundary on the explosion of link-state updates. It allows extensive control of routing updates. Flooding and calculation of the Dijkstra algorithm on a router is limited to changes within an area.

0.0. The network number is configured improperly. E.0. C. In this specific example. the mask used for the network statement is a wildcard mask similar to an access list.0.A network administrator is trying to add a new router into an established OSPF network.(Topic 3) Refer to the exhibit. The network wildcard mask is configured improperly. The OSPF area is configured improperly.0.0. B. The network subnet mask is configured improperly.0 255. what configuration error is causing this problem? Router(config)# router ospf 1 Router(config-router)# network 10. F. The networks attached to the new router do not appear in the routing tables of the other OSPF routers.255 area 0. D. Answer: C Explanation: When configuring OSPF.0 0.” Question No : 119 . The process id is configured improperly. Given the information in the partial configuration shown below.0.0 area 0 A. The AS is configured improperly. the correct syntax would have been “network 10.0. 108 .

Configure a dynamic routing protocol on London to advertise all routes to Manchester. Answer: E Explanation: This static route will allow for communication to the Manchester workstations and it is better to use this more specific route than a default route as traffic destined to the Internet will then not go out the London Internet connection.0/22 to 10. Configure Manchester to advertise a static default route to London. Configure a dynamic routing protocol on Manchester to advertise a default route to the London router. C. Question No : 120 DRAG DROP . Configure a dynamic routing protocol on London to advertise summarized routes to Manchester. Configure a static default route on London with a next hop of 10. D.1. What is the simplest way to accomplish this? A.1. F.1. E.The network administrator must establish a route by which London workstations can forward traffic to the Manchester workstations. Configure a static route on London to direct all traffic destined for 172.0.1.2. B.1.(Topic 3) 109 .16.

C. D. Update the routing table based on updates from their neighbors. Use the shortest-path algorithm to the determine best path. Answer: Question No : 121 . Answer: A. E.Drag each definition on the left to the matching term on the right. Send entire routing table to all routers in the routing domain.(Topic 3) What two things will a router do when running a distance vector routing protocol? (Choose two. Maintain the topology of the entire network in its database. Send periodic updates regardless of topology changes.D Explanation: 110 .) A. B.

The network administrator requires easy configuration options and minimal routing protocol traffic. The routing updates proceed step by step from router to router. C. Question No : 122 .(Topic 3) Refer to the exhibit. 111 .0. E. a dynamic routing protocol on InternetRouter to advertise all routes to CentralRouter. routers discover the best path to destination from each neighbor.16. a dynamic routing protocol on CentralRouter to advertise all routes to InternetRouter. a static route on InternetRouter to direct traffic that is destined for 172. B. D.Distance means how far and Vector means in which direction. What two options provide adequate routing table information for traffic that passes between the two routers and satisfy the requests of the network administrator? (Choose two. a dynamic routing protocol on InternetRouter to advertise summarized routes to CentralRouter. a dynamic routing protocol on CentralRouter to advertise summarized routes to InternetRouter. In distance vector routing protocols. Distance Vector routing protocols pass periodic copies of routing table to neighbor routers and accumulate distance vectors.) A.0/16 to CentralRouter.

(Topic 3) Refer to the exhibit. The network administrator powers down the router and sets it up at a remote location. D. The boot system flash command is missing from the configuration. A network administrator configures a new router and enters the copy startup-config running-config command on the router. E. The network administrator failed to save the configuration. The network administrator has made a mistake because the command “copy startup-config running-config” will copy the startup config (which is empty) over the running config (which is configured by the administrator). default route on CentralRouter that directs traffic to InternetRouter. What is the cause of the problem? A. Answer: C. a static. B. The configuration register is set to 0x2102. C. When the router starts. Question No : 123 .F. it enters the system configuration dialog as shown. So everything configured was deleted. Note: We can tell the router to ignore the start-up configuration on the next reload by 112 . The router is configured with the boot system startup command.F Explanation: The use of static routes will provide the necessary information for connectivity while producing no routing traffic overhead. Answer: A Explanation: The “System Configuration Dialog” appears only when no startup configuration file is found. The configuration register is set to 0x2100.

(Topic 3) The network administrator cannot connect to Switch1 over a Telnet session. This will make the “System Configuration Dialog” appear at the next reload. Question No : 124 .setting the register to 0×2142. 113 . although the hosts attached to Switch1 can ping the interface Fa0/0 of the router.

are good. Answer: B Explanation: The Process ID for OSPF on a router is only locally significant and you can use the same number on each router. B. Don't get this confused with area numbers.Given the information in the graphic and assuming that the router and Switch2 are configured properly.168. which can be from 0 to 4. which of the following commands should be issued on Switch1 to correct this problem? A. It is globally significant and is used to identify OSPF stub areas. However.24. we know that connectivity. Switch1(config)# ip default-gateway 192. 114 .255.(Topic 3) Which statement describes the process ID that is used to run OSPF on a router? A.168. the ip default-gateway command must be used.24. for the switch itself to reach networks outside the local one. Switch1(config)# interface fa0/1 Switch1(config-if)# switchport mode trunk Answer: C Explanation: Since we know hosts can reach the router through the switch. duplex.2 billion. C. It is locally significant and must be the same throughout an area. It is globally significant and is used to represent the AS number. Switch1(config)# line con0 Switch1(config-line)# password cisco Switch1(config-line)#login B. Switch1(config)# interface fa0/1 Switch1(config-if)# ip address 192. or each router can have a different number-it just doesn't matter. etc. Switch1(config)# interface fa0/1 Switch1(config-if)# duplex full Switch1(config-if)# speed 100 E. D. It is locally significant and is used to identify an instance of the OSPF database. Question No : 125 .255.535.3 255.1 D. The numbers you can use are from 1 to 65.0 C. Speed.

show running-config D.(Topic 3) Which command reveals the last method used to powercycle a router? A.Question No : 126 . show boot C. show reload B. show version Answer: D Explanation: The “show version” command can be used to show the last method to powercycle (reset) a router. 115 .

Question No : 127 - (Topic 3)
Refer to the graphic.

116

R1 is unable to establish an OSPF neighbor relationship with R3. What are possible
reasons for this problem? (Choose two.)
A. All of the routers need to be configured for backbone Area 1.
B. R1 and R2 are the DR and BDR, so OSPF will not establish neighbor adjacency with
R3.
C. A static route has been configured from R1 to R3 and prevents the neighbor adjacency
from being established.
D. The hello and dead interval timers are not set to the same values on R1 and R3.
E. EIGRP is also configured on these routers with a lower administrative distance.
F. R1 and R3 are configured in different areas.
Answer: D,F
Explanation:
This question is to examine the conditions for OSPF to create neighborhood.
So as to make the two routers become neighbors, each router must be matched with the
following items:
1. The area ID and its types;
2. Hello and failure time interval timer;
3. OSPF Password (Optional).

Question No : 128 - (Topic 3)
What are two enhancements that OSPFv3 supports over OSPFv2? (Choose two.)
117

A. It requires the use of ARP.
B. It can support multiple IPv6 subnets on a single link.
C. It supports up to 2 instances of OSPFv3 over a common link.
D. It routes over links rather than over networks.
Answer: B,D
Explanation:
Here is a list of the differences between OSPFv2 and OSPFv3:
They use different address families (OSPFv2 is for IPv4-only, OSPFv3 can be
used for IPv6-only or both protocols
OSPFv3 introduces new LSA types
OSPFv3 has different packet format
OSPFv3 uses different flooding scope bits (U/S2/S1)
OSPFv3 adjacencies are formed over link-local IPv6 communications
OSPFv3 runs per-link rather than per-subnet
OSPFv3 supports multiple instances on a single link, Interfaces can have multiple
IPv6 addresses
OSPFv3 uses multicast addresses FF02::5 (all OSPF routers), FF02::6 (all OSPF
DRs)
OSPFv3 Neighbor Authentication done with IPsec (AH)
OSPFv2 Router ID (RID) must be manually configured, still a 32-bit number
Reference: http://www.networkworld.com/article/2225270/cisco-subnet/ospfv3-for-ipv4-andipv6.html

Question No : 129 - (Topic 3)
Which command is used to display the collection of OSPF link states?
A. show ip ospf link-state
B. show ip ospf lsa database
C. show ip ospf neighbors
D. show ip ospf database
Answer: D
Explanation:
The “show ip ospf database” command displays the link states. Here is an example:

118

Here is the lsa database on R2.
R2#show ip ospf database
OSPF Router with ID (2.2.2.2) (Process ID 1)
Router Link States (Area 0)
Link ID ADV Router Age Seq# Checksum Link count
2.2.2.2 2.2.2.2 793 0x80000003 0x004F85 2
10.4.4.4 10.4.4.4 776 0x80000004 0x005643 1
111.111.111.111 111.111.111.111 755 0x80000005 0x0059CA 2
133.133.133.133 133.133.133.133 775 0x80000005 0x00B5B1 2
Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
10.1.1.1 111.111.111.111 794 0x80000001 0x001E8B
10.2.2.3 133.133.133.133 812 0x80000001 0x004BA9
10.4.4.1 111.111.111.111 755 0x80000001 0x007F16
10.4.4.3 133.133.133.133 775 0x80000001 0x00C31F

Question No : 130 - (Topic 3)
Refer to the exhibit.

When running EIGRP, what is required for RouterA to exchange routing updates with
RouterC?

119

A. AS numbers must be changed to match on all the routers
B. Loopback interfaces must be configured so a DR is elected
C. The no auto-summary command is needed on Router A and Router C
D. Router B needs to have two network statements, one for each connected network
Answer: A
Explanation:
This question is to examine the understanding of the interaction between EIGRP routers.
The following information must be matched so as to create neighborhood.
EIGRP routers to establish, must match the following information:
1. AS Number;
2. K value.

Question No : 131 - (Topic 3)
Refer to the exhibit.

The Lakeside Company has the internetwork in the exhibit. The administrator would like to
reduce the size of the routing table on the Central router. Which partial routing table entry
in the Central router represents a route summary that represents the LANs in Phoenix but
120

no additional subnets?
A. 10.0.0.0/22 is subnetted, 1 subnets
D 10.0.0.0 [90/20514560] via 10.2.0.2, 6w0d, Serial0/1
B. 10.0.0.0/28 is subnetted, 1 subnets
D 10.2.0.0 [90/20514560] via 10.2.0.2, 6w0d, Serial0/1
C. 10.0.0.0/30 is subnetted, 1 subnets
D 10.2.2.0 [90/20514560] via 10.2.0.2, 6w0d, Serial0/1
D. 10.0.0.0/22 is subnetted, 1 subnets
D 10.4.0.0 [90/20514560] via 10.2.0.2, 6w0d, Serial0/1
E. 10.0.0.0/28 is subnetted, 1 subnets
D 10.4.4.0 [90/20514560] via 10.2.0.2, 6w0d, Serial0/1
F. 10.0.0.0/30 is subnetted, 1 subnets
D 10.4.4.4 [90/20514560] via 10.2.0.2, 6w0d, Serial0/1
Answer: D
Explanation:
The 10.4.0.0/22 route includes 10.4.0.0/24, 10.4.1.0/24, 10.4.2.0/24 and 10.4.3.0/24
networks only.

Question No : 132 - (Topic 3)
Refer to the exhibit.

A network associate has configured OSPF with the command:

121

City(config-router)# network 192.168.12.64 0.0.0.63 area 0
After completing the configuration, the associate discovers that not all the interfaces are
participating in OSPF. Which three of the interfaces shown in the exhibit will participate in
OSPF according to this configuration statement? (Choose three.)
A. FastEthernet0 /0
B. FastEthernet0 /1
C. Serial0/0
D. Serial0/1.102
E. Serial0/1.103
F. Serial0/1.104
Answer: B,C,D
Explanation:
The “network 192.168.12.64 0.0.0.63 equals to network 192.168.12.64/26. This network
has:
+ Increment: 64 (/26= 1111 1111.1111 1111.1111 1111.1100 0000)
+ Network address: 192.168.12.64
+ Broadcast address: 192.168.12.127
Therefore all interfaces in the range of this network will join OSPF.

Question No : 133 - (Topic 3)
Which commands are required to properly configure a router to run OSPF and to add
network 192.168.16.0/24 to OSPF area 0? (Choose two.)
A. Router(config)# router ospf 0
B. Router(config)# router ospf 1
C. Router(config)# router ospf area 0
D. Router(config-router)# network 192.168.16.0 0.0.0.255 0
E. Router(config-router)# network 192.168.16.0 0.0.0.255 area 0
F. Router(config-router)# network 192.168.16.0 255.255.255.0 area 0
Answer: B,E
Explanation:

122

C.(Topic 3) Refer to the exhibit. B.In the router ospf command.1.255. F.1. The CDP information was received on port Serial0/0 of the Manchester router. The Manchester serial address is 10. the ranges from 1 to 65535 so o is an invalid number -> but To configure OSPF.1. Given the output that is shown. Question No : 134 . The serial network between the two devices has a mask of 255.252. what three statements are true of these devices? (Choose three. not a subnet mask.C. The London router is a Cisco 2610. We also need to assgin an area to this process ->. The two exhibited devices are the only Cisco devices on the network.255.E Explanation: 123 .) A. D. Answer: A. E. The Manchester serial address is 10. we need a wildcard in the “network” statement. The Manchester router is a Cisco 2610.1.1.2. The CDP information was sent by port Serial0/0 of the London router.

1.1.(Topic 3) On a corporate network.htm Question No : 136 .252. well written article on this operation can be found here: http://www.com/RouterOnAStickCCNACertificationExamTutorial. we learn that the IP address of the neighbor router is 10.thebryantadvantage. Please notice that “Interface” refers to the local port on the local router.255.255. What is needed to allow communication between the VLANs? 124 . hosts on the same VLAN can communicate with each other. one physical interface for each subinterface B. Question No : 135 . subinterface encapsulation identifiers that match VLAN tags E.(Topic 3) Which three elements must be used when you configure a router interface for VLAN trunking? (Choose three. as shown in the output ->. a management domain for each subinterface D.2 and the question stated that the subnet mask of the network between two routers is 255.1 ->.From the output. The platform of the neighbor router is cisco 2610. A short.D. Maybe the most difficult choice of this question is the answer E or F. So we can deduce the ip address (of the serial interface) of Manchester router is 10. but they are unable to communicate with hosts on different VLANs. one IP network or subnetwork for each subinterface C.1.) A.1. Therefore there are only 2 available hosts in this network (22 – 2 = 2).E Explanation: This scenario is commonly called a router on a stick. in this case it is the port of Manchester router. one subinterface per VLAN F. subinterface numbering that matches VLAN tags Answer: B. and “Port ID (outgoing port)” refers to the port on the neighbor router.

x y. you need a router or a layer 3 switch. 125 . To change this and allow inter-VLAN communication. establishing Trunking links to achieve communications of devices which belong to different VLANs. they can communicate with the help of Layer3 router.y.x. a switch with a trunk link that is configured between the switches Answer: A Explanation: Different VLANs can't communicate with each other.1 RouterA(config-subif)#encapsulation ? dot1Q IEEE 802. Hence.(Topic 3) Refer to the exhibit. the switches tag each frame sent between switches so that the receiving switch knows to what VLAN the frame belongs. When using VLANs in networks that have multiple interconnected switches. a switch with an access link that is configured between the switches D. With VLAN trunking. it is needed to connect a router to a switch. then make the subinterface on the router to connect to the switch. only hosts that are members of the same VLAN can communicate.1Q Virtual LAN RouterA(config-subif)#encapsulation dot1Q or isl VLAN ID RouterA(config-subif)# ip address x. a router with subinterfaces configured on the physical interface that is connected to the switch B. The attached devices are unaware of any VLAN structure.x. End user devices connect to switch ports that provide simple connectivity to a single VLAN each.y Question No : 137 . you need to use VLAN trunking between the switches. a router with an IP address on the physical interface connected to the switch C.y.A. Here is the example of configuring the router for inter-vlan communication RouterA(config)#int f0/0. By default.

15 = startup-config in NVRAM 4. D. Check Configuration Register value (NVRAM) which can be modified using the configregister command 0 = ROM Monitor mode 1 = ROM IOS 2 . POST (power on self-test) 2. use default fallback sequence to locate the IOS (Flash. Router1 defaulted to ROMMON mode and loaded the IOS image from a TFTP server. Startup-config filE. Check for boot system commands (NVRAM) If boot system commands in startup-config a. Router1 is acting as a TFTP server for other routers.For what two reasons has the router loaded its IOS image from the location that is shown? (Choose two.C Explanation: The loading sequence of CISCO IOS is as follows: Booting up the router and locating the Cisco IOS 1. Answer: A. 126 . E. Router1 has specific boot system commands that instruct it to load IOS from a TFTP server. Bootstrap code executed 3. Router1 cannot locate a valid IOS image in flash memory. C. Run boot system commands in order they appear in startup-config to locate the IOS b. Cisco routers will first attempt to load an image from TFTP for management purposes.) A. B. [If boot system commands fail.

ROM)?] If no boot system commands in startup-config use the default fallback sequence in locating the IOS: a. Flash (sequential) b. What path will packets take from a host on the 192. the router will use the default fallback sequence for locating the IOS and then it will enter setup mode or the setup dialogue. Question No : 138 . If IOS is loaded. The company uses EIGRP as the routing protocol. TFTP server (netboot) c.192/26 network to a host on the LAN attached to router R1? 127 . but there is no startup-config file.168.10.TFTP.(Topic 3) Refer to the exhibit. ROM (partial IOS) or keep retrying TFTP depending upon router model 5.

28 255.8/30 network (the network between R1 & R3) -> packets destined for 192.240 B.0 255.(Topic 3) Refer to the exhibit.168. 192.255.25. D.25.10.0 255.168.168.255.255.64/26 subnet.255.10. The path of the packets will be R3 to R1 to R2.64 will be routed from R3 -> R1 -> LAN on R1.168.255.168.168. C.168.168.28 255.252 Answer: C 128 .240 D. 192.168.A.252 C.255. Answer: D Explanation: Host on the LAN attached to router R1 belongs to 192. 192. 192.252 E.25. 192. Which address and mask combination represents a summary of the routes learned by EIGRP? A. which is an IP address in 192.255.255.10.10.25.16 255.255. B. The path of the packets will be R3 to R1.168.240 F. The path of the packets will be R3 to R2 to R1.25.16 255. The path of the packets will be both R3 to R2 to R1 AND R3 to R1.25.255. Question No : 139 .255.9. From the output of the routing table of R3 we learn this network can be reach via 192.255. 192.

168.25. EIGRP learned 4 routes and we need to find out the summary of them: + 192.168. the RIPv2 route D. Therefore the subnet mask is /28 (=1111 1111.28 -> The increment should bE.240.255. So.168.240.Explanation: The binary version of 20 is 10100. One route is from EIGRP and has a composite metric of 20514560.25. The binary version of 28 is 11100. The binary version of 24 is 11000.255. all three routes E. The mask is 255. Another route is from OSPF with a metric of 782. Note: From the output above.16 255.168.1111 1111.25. the router will choose to 129 . the OSPF and RIPv2 routes Answer: B Explanation: When one route is advertised by more than one routing protocol.11110000) = 255.(Topic 3) A router has learned three possible routes that could be used to reach a destination network.25.1111 1111. The last is from RIPv2 and has a metric of 4. 28 – 16 = 12 but 12 is not an exponentiation of 2 so we must choose 16 (24).20 + 192.255.24 + 192. the EIGRP route C.255. Which route or routes will the router install in the routing table? A. the best answer should be 192.240.16 + 192. the OSPF route B.25. Question No : 140 .168.255. The binary version of 16 is 10000.255. The subnet mask is /28.

The Feasible Successor is a backup route to a destination which is kept in the Topology Table.(Topic 3) Which type of EIGRP route entry describes a feasible successor? A. The Topology Table list all the learned routers to destination whilst the Routing Table contains the best route to a destination. stored in the routing table C. a primary route.(Topic 3) 130 .use the routing protocol which has lowest Administrative Distance. stored in the routing table B. a backup route. stored in the topology table Answer: C Explanation: EIGRP uses the Neighbor Table to list adjacent routers. a primary route. Question No : 142 . stored in the topology table D. a backup route. The Administrative Distances of popular routing protocols are listed below: Question No : 141 . which is known as the Successor.

Based on the output of the show ip route command and the topology shown in the graphic. 131 . the security of device access is improved.What is the effect of using the service password-encryption command? A.(Topic 3) Users on the 172. Answer: E Explanation: Enable vty. C.17. D. Use the show run command to show most passwords in clear text. console. Question No : 143 . what is the cause of the failure? A.0 network. AUX passwords are configured on the Cisco device. B. IP routing is not enabled. B. The network has not fully converged. all the passwords are encrypted. It will encrypt all current and future passwords.22. E. Only passwords configured after the command has been entered will be encrypted. The network administrator connected to router Coffee via the console port. If the service password-encryption is used. Only the enable secret password will be encrypted. As a result.0 network cannot reach the server located on the 172. issued the show ip route command.31. Only the enable password will be encrypted. and was able to ping the server.5. It will encrypt the secret password and remove the enable secret password from the configuration.

D. It reduces the types of LSAs that are generated.19. C.0.2. 132 . The correct IP address will be 172.C. It increases LSA response times.C Explanation: OSPF uses a LSDB (link state database) and fills this with LSAs (link state advertisement). The neighbor relationship table is not correctly updated.22. A static route is configured incorrectly. Answer: B. It is less CPU intensive for routers in the single area.0 network.5. E. E. The FastEthernet interface on Coffee is disabled.) A.0.31. then many of these LSA types (Summary ASBR LSA. The routing table on Coffee has not updated. Answer: C Explanation: The default route or the static route was configured with incorrect next-hop ip address 172.18.22.22. B. IP route 0. F. It reduces the number of required OSPF neighbor adjacencies.2 to reach server located on 172.2 Question No : 144 .0. D.18.(Topic 3) What are two benefits of using a single OSPF area network design? (Choose two. It removes the need for virtual links.0 172. The link types are as follows: •LSA Type 1: Router LSA •LSA Type 2: Network LSA •LSA Type 3: Summary LSA •LSA Type 4: Summary ASBR LSA •LSA Type 5: Autonomous system external LSA •LSA Type 6: Multicast OSPF LSA •LSA Type 7: Not-so-stubby area LSA •LSA Type 8: External attribute LSA for BGP If all routers are in the same area.0 0.0.

Telnet server Answer: C. flash memory D. Virtual links are not ideal and should really only be used for temporary network solutions or migrations.external LSA. + TFTP server 3. + ROM (used if no other source is found) 4. TFTP server F. where this is not possible. Question No : 145 . known as a transit area.) A. However. All areas in an Open Shortest Path First (OSPF) autonomous system must be physically connected to the backbone area (Area 0). The area through which you configure the virtual link. + Flash (the default location) 2. RAM B. etc) will not be used and will not be generated by any router. (Please read the explanation of Question 4 for more information) Question No : 146 .(Topic 3) Which two locations can be configured as a source for the IOS image in the boot system command? (Choose two.(Topic 3) 133 . NVRAM C. HTTP server E. In some cases. You can also use virtual links to connect two parts of a partitioned backbone through a nonbackbone area.E Explanation: The following locations can be configured as a source for the IOS image: 1. The transit area cannot be a stub area. if all locations are in a single OSPF area this is not needed. must have full routing information. you can use a virtual link to connect to the backbone through a non-backbone area.

a default route with a next hop address of 192.0 255.1.255.0/24 with a local serial interface configured as the next hop Answer: A Explanation: When there is more than one way to reach a destination.254/24 B. router ospf network 10.0 0.A router receives information about network 192.1.0.0.168.255 C. Directly connected routes have an AD of 1 so this will be the route chosen.255.255 Answer: C 134 .0/24 C.168.1.255.1.1. router ospf 1 network 10.0. router ospf area 0 network 10.0.10.168.1. an OSPF update for network 192. a static route to network 192.0 0. So.1.1.(Topic 3) What command sequence will configure a router to run OSPF and add network 10.0 area 0 B.0/16 E.255. a directly connected interface with an address of 192.0/24 from multiple sources.168.10.1.255 area 0 D. router ospf network 10.1. router ospf 1 network 10. What will the router consider the most reliable information about the path to that network? A.168. meaning the most specific route.0/24 D.0. it will choose the best one based on a couple of things.0.0. Question No : 147 .10. a RIP update for network 192.10. Next. in this case the /24 routes will be chosen over the /16 routes.0 /24 to area 0? A. a static route to network 192.0 area 0 F.168.1. from all the /24 routes it will choose the one with the lowest administrative distance.0.10.1 F.10.1.0 0.255 area 0 E.0 255. First.168.0 0. router ospf area 0 network 10.0.1. it will choose the route that has the longest match.1.

Step 3 router ospf process-id Example: Device(config)# router ospf 109 Enables OSPF routing and enters router configuration mode. Step 5 End Example: Device(config-router)# end 135 .0. Enter your password if prompted. configure terminal 3.3 area 0 Defines an interface on which OSPF runs and defines the area ID for that interface. router ospf process-id 4.Explanation: Enabling OSPF SUMMARY STEPS 1. network ip-address wildcard-mask area area-id 5.0.16 0. enable 2. Step 4 Network ip-address wildcard-mask area area-id Example: Device(config-router)# network 192. Step 2 Configure terminal Example: Device# configure terminal Enters global configuration mode.168.129. end DETAILED STEPS Command or Action Purpose Step 1 Enable Example: Device> enable Enables privileged EXEC mode.

service password-encryption access-list 1 permit 192. For anyone viewing the configuration and issuing the show run command. Reference: http://www.0 0.0.255 line vty 0 4 login password cisco access-class 1 B.168. Incorrect answer: command.html#GUID-588D1301-F63C-4DAC-BF1C-C3735EB13673 Question No : 148 .0. service password-encryption line vty 1 login password cisco D. the password for Telnet access should be encrypted.cisco.1. 136 .com/c/en/us/td/docs/ios-xml/ios/iproute_ospf/configuration/124t/iro-12-4t-book/iro-cfg. Which set of commands will accomplish this task? A. enable password secret line vty 0 login password cisco C.Exits router configuration mode and returns to privileged EXEC mode.(Topic 3) A network administrator needs to allow only one Telnet connection to a router. service password-encryption line vty 0 4 login password cisco Answer: C Explanation: Only one VTY connection is allowed which is exactly what's requested. line vty0 4 would enable all 5 vty connections.

137 . The process number can be any number from 1 to 65. B. C. Different process identifiers can be used to run multiple OSPF processes D. All OSPF routers in an area must have the same process ID. Answer: C.535. The valid process ID’s are shown below: Edge-B(config)#router ospf ? <1-65535> Process ID Question No : 150 .) Router(config)# router ospf 1 A. Hello packets are sent to each neighbor to determine the processor identifier.(Topic 3) Refer to the graphic. Only one process number can be used on the same router. E.D Explanation: Multiple OSPF processes can be configured on a router using multiple process ID’s.Question No : 149 .(Topic 3) Which two statements describe the process identifier that is used in the command to configure OSPF on a router? (Choose two.

0 0.5. 90 B. 100 C.6.6.6. HFD(config)# ip route 10. Administrative distance defines the reliability of a routing protocol.255.6.6 0.0.6. HFD(config)# ip route 10.255.0 F. Which commands will accomplish this? (Choose two.5.5.0 10.0: the destination network +fa0/0: the exit-interface Question No : 151 .0.0.0 0.5.A static route to the 10.5.5.6.4.0 Answer: C.4.5.6.(Topic 3) What is the default administrative distance of OSPF? A.5.0 fa0/0 D.255.255.5.255.255.0 255.6 255.D Explanation: The simple syntax of static route: ip route destination-network-address subnet-mask {next-hop-IP-address | exit-interface} + destination-network-address: destination network address of the remote network + subnet mask: subnet mask of the destination network + next-hop-IP-address: the IP address of the receiving interface on the next-hop router + exit-interface: the local interface of this router where the packets will go out In the statement “ip route 10. 110 D.6 C.255 10.5.) A.0 255.255. HFD(config)# ip route 10.0.6.0 fa0/0: + 10.6.0 255.0.255 fa0/0 B.4.5. HFD(config)# ip route 10.6 E.4.255.255.0 10.5.0.0/24 network is to be configured on the HFD router.5. 120 Answer: C Explanation: Administrative distance is the feature that routers use in order to select the best path when there are two or more different routes to the same destination from two different routing protocols. HFD(config)# ip route 10.0 255. Each routing 138 .255.255 10. HFD(config)# ip route 10.

protocol is prioritized in order of most to least reliable (believable) with the help of an administrative distance value. Default Distance Value Table This table lists the administrative distance default values of the protocols that Cisco supports: Route Source Default Distance Values Connected interface 0 Static route 1 Enhanced Interior Gateway Routing Protocol (EIGRP) summary route 5 External Border Gateway Protocol (BGP) 20 Internal EIGRP 90 IGRP 100 OSPF 110 Intermediate System-to-Intermediate System (IS-IS) 115 Routing Information Protocol (RIP) 120 Exterior Gateway Protocol (EGP) 140 On Demand Routing (ODR) 160 External EIGRP 170 Internal BGP 200 Unknown* 255 139 .

(Topic 3) Refer to the exhibit. The maximum packet size that can traverse this interface is 1500 bytes. D. Question No : 153 . F. The minimum packet size that can traverse this interface is 1500 bytes. What is the meaning of the output MTU 1500 bytes? A. show vty logins Answer: B Explanation: 140 . Answer: E Explanation: The Maximum Transmission Unit (MTU) defines the maximum Layer 3 packet (in bytes) that can be transmitted out the interface. B. The maximum number of bytes that can traverse this interface per second is 1500. C. The maximum segment size that can traverse this interface is 1500 bytes. The maximum frame size that can traverse this interface is 1500 bytes. show users D.Question No : 152 . E. show session C.(Topic 3) Which command shows your active Telnet connections? A. The minimum segment size that can traverse this interface is 1500 bytes. show cdp neigbors B.

Question No : 155 .(Topic 3) Before installing a new. enable cdp B. the amount of available ROM B. meaning connections from your router so the answer should be A. Question No : 154 . use the cdp run command in global configuration mode. disable it with the no cdp run command. show processes 141 . the amount of available flash and RAM memory C.The “show users” shows telnet/ssh connections to your router while “show sessions” shows telnet/ssh connections from your router (to other devices).) A. and which command should be used to gather this information? (Choose two. not global. cdp enable C.(Topic 3) Which command would you configure globally on a Cisco router that would allow you to view directly connected Cisco devices? A. cdp run D. what should be checked on the router. run cdp Answer: C Explanation: CDP is enabled on Cisco routers by default. If you prefer not to use the CDP capability. In order to reenable CDP. The “cdp enable” command is an interface command. upgraded version of the IOS. The question asks about “your active Telnet connections”. show version E. the version of the bootstrap software present on the router D.

show running-config Answer: B.(Topic 3) What is the default maximum number of equal-cost paths that can be placed into the routing table of a Cisco OSPF router? A.F. unlimited Answer: B Explanation: maximum-paths (OSPF) To control the maximum number of parallel routes that Open Shortest Path First (OSPF) can support. Also running the new IOS may require more RAM than the older one so we should check the available RAM too. Command Default 8 paths 142 . use the maximum-paths command. We can check both with the “show version” command. 2 B. Question No : 156 . The range is from 1 to 16 routes. 8 C.D Explanation: When upgrading a new version of the IOS we need to copy the IOS to the Flash so first we have to check if the Flash has enough memory or not. Syntax Description maximum Maximum number of parallel routes that OSPF can install in a routing table. 16 D.

This command uses a very weak encryption because the router has to be very quickly decode the passwords for its operation. Delay. Delay. Router# service password-encryption B. Router# password-encryption Answer: C Explanation: Command The “service password-encryption” command allows you to encrypt all passwords on your router so they cannot be easily guessed from your running-config. Router(config)# service password-encryption D. and Load Answer: A Explanation: The well-known formula to calculate OSPF cost is Cost = 108 / Bandwidth Question No : 158 . MTU. that is all.(Topic 3) Which command encrypts all plaintext passwords? A. Reliability. Bandwidth. Bandwidth B. Bandwidth and Delay C. 143 .Question No : 157 . Bandwidth. It is meant to prevent someone from looking over your shoulder and seeing the password. Router(config)# password-encryption C. and MTU D.(Topic 3) Which parameter or parameters are used to calculate OSPF cost in Cisco routers? A. This is configured in global configuration mode.

168.168.Question No : 159 .(Topic 3) Refer to the exhibit.) A. Router(config)# router eigrp 100 Router(config-router)# network 192.255.0 Router(config)# interface fastethernet 0/0.0 Router(config-if)# no shut down B.1 Router(config-subif)# encapsulation dot1q 10 Router(config-subif)# ip address 192.255.255.0 C.255.168.1 255.2 Router(config-subif)# encapsulation dot1q 20 Router(config-subif)# ip address 192.20. What commands must be configured on the 2950 switch and the router to allow communication between host 1 and host 2? (Choose two. Router(config)# interface fastethernet 0/0 Router(config-if)# ip address 192. Router(config)# interface fastethernet 0/0 Router(config-if)# no shut down Router(config)# interface fastethernet 0/0.1.20.1 255.10.0 Router(config-router)# network 192. Switch1(config)# vlan database Switch1(config-vlan)# vtp domain XYZ Switch1(config-vlan)# vtp server 144 .168.255.10.168.255.0 D.1 255.

No configuration file was found in flash.168.1 Answer: B. On the switch. Switch1(config)# interface vlan 1 Switch1(config-if)# ip default-gateway 192. where each subinterface is assigned a VLAN and IP address for each VLAN. What can be determined about the router from the console output? A. 145 . Switch1(config)# interface fastethernet 0/1 Switch1(config-if)# switchport mode trunk F.E Explanation: The router will need to use subinterfaces. No configuration file was found in the PCMCIA card.E. D. No configuration file was found in NVRAM. C. Configuration file is normal and will load in 15 seconds.1. Question No : 160 . Answer: A Explanation: When no startup configuration file is found in NVRAM. B. the connection to the router need to be configured as a trunk using the switchport mode trunk command and it will need a default gateway for VLAN 1.(Topic 3) Refer to the exhibit. the System Configuration Dialog will appear to ask if we want to enter the initial configuration dialog or not.

Question No : 161 . C.(Topic 3) 146 . The interfaces are functioning correctly. Serial0/0 is down because it has been disabled using the “shutdown” command. Question No : 162 . B. D.(Topic 3) Refer to the exhibit. Assuming that the entire network topology is shown. One interface has a problem. Answer: C Explanation: The output shown shows normal operational status of the router’s interfaces. what is the operational status of the interfaces of R2 as indicated by the command output shown? A. The operational status of the interfaces cannot be determined from the output shown. Two interfaces have problems.

X. Init.When a router undergoes the exchange protocol within OSPF. PPP C.html Topic 4. Attempt. section 10. loading state > exchange state > full state > exstart state Answer: B Explanation: When OSPF adjacency is formed. 2-Way. and Full. Reference: http://www.com/c/en/us/support/docs/ip/open-shortest-path-firstospf/13685-13. PPP was designed to work with several network layer protocols. a router goes through several state changes before it becomes fully adjacent with its neighbor. Exstart. Frame Relay Answer: B Explanation: PPP: Provides router-to-router and host-to-network connections over synchronous and asynchronous circuits.(Topic 4) Which Layer 2 protocol encapsulation type supports synchronous and asynchronous circuits and has built-in security mechanisms? A. Exchange. HDLC B. in what order does it pass through each state? A. The states are (in order) Down. Those states are defined in the OSPF RFC 2328. including IP.1. exstart state > full state > loading state > exchange state D. exstart state > exchange state > loading state > full state C. such as Password Authentication Protocol (PAP) and Challenge Handshake Authentication Protocol (CHAP). WAN Technologies Question No : 163 . exstart state > loading state > exchange state > full state B.cisco. Loading. 147 .25 D. PPP also has built-in security mechanisms.

no static address mapping is required.3. dynamic address mapping takes place automatically. With Inverse ARP. the device knows the Layer 3 IP address and needs to know the remote data link MAC address.(Topic 4) Refer to the exhibit. but needs to know the remote Layer 3 IP address. If the Frame Relay environment supports LMI autosensing and Inverse ARP.3. Once the requesting router receives an Inverse ARP response. The mapping between DLCI 100 and the end station IP address 172. However. The DLCI 100 was dynamically allocated by the router. D.16. B.1 was learned through Inverse ARP. Inverse ARP requests a next-hop protocol address for each active PVC. Therefore. the router knows the Layer 2 address which is the DLCI. The Serial0/0 interface acquired the IP address of 172. Inverse ARP works much the same way Address Resolution Protocol (ARP) works on a LAN. Answer: E Explanation: Inverse Address Resolution Protocol (Inverse ARP) was developed to provide a mechanism for dynamic DLCI to Layer 3 address maps. When using dynamic address mapping.16. Dynamic address mapping is enabled by default for all protocols enabled on a physical interface. it updates its DLCI-to-Layer 3 address mapping table. What is the meaning of the term dynamic as displayed in the output of the show framerelay map command shown? A.1 from a DHCP server. with ARP. 148 . E. The DLCI 100 will be dynamically changed as required to adapt to changes in the Frame Relay cloud.Question No : 164 . The Serial0/0 interface is passing traffic. C.

better throughput C.D. Question No : 166 . DLCI Answer: D Explanation: The PPP Link Control Protocol (LCP) is documented in RFC 1661. ISDN C. reduced cost B.(Topic 4) What are three reasons that an organization with multiple branch offices and roaming users might implement a Cisco VPN solution instead of point-to-point WAN links? (Choose three. particularly when 149 . callback.Question No : 165 . scalability F. the authentication protocol.) A. LPC negotiates link and PPP parameters to dynamically configure the data link layer of a PPP connection. and multilink options. increased security E. Common LCP options include the PPP MRU. NCP B.E Explanation: IPsec offer a number of advantages over point to point WAN links. broadband incompatibility D. compression of PPP header fields. SLIP D.(Topic 4) Which PPP subprotocol negotiates authentication options? A. LCP E. reduced latency Answer: A.

65.201.237.201.2 host C 192. Other types of access from host B to the Finance Web Server should be blocked. These include reduced cost. host A 192. The Public Web Server in the Server LAN has been assigned an address of 172. This access list can contain no more than three statements that meet these requirements. All access from hosts in the Core or local LAN to the Finance Web Server should be blocked.201.168.254.168. The Core connection uses an IP address of 198.168.(Topic 4) A corporation wants to add security to its network.237. where as a point to point link would need to be provisioned to each location.22. and increased scalability as s single WAN link can be used to connect to all locations in a VPN.168.18.multiple locations are involved.3 host D 192.17.1 host B 192. increased security since all traffic is encrypted. You have been tasked to create and apply a numbered access list to a single outbound interface.168.4 The Finance Web Server has been assigned an address of 172. Access to the router CLI can be gained by clicking on the appropriate host.201. Question No : 167 CORRECT TEXT . All passwords have been temporarily set to “cisco”. The computers in the Hosts LAN have been assigned addresses of 192.201.201.1 – 192. The requirements are: Host B should be able to use a web browser (HTTP) to access the Finance Web Server. 150 .168.18.132.22. All hosts in the Core and on local LAN should be able to access the Public Web Server.

151 .

152 .

use the “show ip interface brief” command: Macintosh HD:Users:danielkeller:Desktop:Screen Shot 2015-11-17 at 3.34 PM.png 153 .24. Explanation: We should create an access-list and apply it to the interface that is connected to the Server LAN because it can filter out traffic from both S2 and Core networks.Answer: Please check the below explanation for all details. To see which interface this is.

22.2 host 172.18 any Finally.22.2 to the Finance Web Server 172.18) Corp1(config)#access-list 100 permit ip host 172. save the configuration Corp1(config-if)#end Corp1#copy running-config startup-config 154 . apply this access-list to Fa0/1 interface (outbound direction) Corp1(config)#interface fa0/1 Corp1(config-if)#ip access-group 100 out Notice: We have to apply the access-list to Fa0/1 interface (not Fa0/0 interface) so that the access-list can filter traffic coming from both the LAN and the Core networks.17 to check if you are allowed to access Finance Web Server or not. If your configuration is correct then you can access it.From this.22. Then. To verify.22. C and D) and check to make sure you can’t access Finance Web Server from these hosts.168125. blocking all other access to the finance web server: Corp1(config)#access-list 100 deny ip any host 172.22. In the address box type http://172.17 eq 80 Then. our next two instructions are these: Other types of access from host B to the Finance Web Server should be blocked. All access from hosts in the Core or local LAN to the Finance Web Server should be blocked. so our first line is this: Corp1(config)#access-list 100 permit tcp host 192. Corp1#configure terminal Our access-list needs to allow host B – 192.22.17 Our last instruction is to allow all hosts in the Core and on the local LAN access to the Public Web Server (172. This can be accomplished with one command (which we need to do as our ACL needs to be no more than 3 lines long). so we will place our numbered access list here in the outbound direction.168. just click on host B to open its web browser.17 via HTTP (port 80).109.109.109.18.109.109. Finally.109. repeat to make sure they can reach the public server at 172.125.22.109. we know that the servers are located on the fa0/1 interface. Click on other hosts (A.

Below is the output of this command (notice Cisco is the default encapsulation so it is not listed here. Q9333-A Annex A D. They represent the ANSI Annex D. HDLC is a WAN protocol same as Frame-Relay and PPP so it is not a Frame Relay encapsulation type.(Topic 4) It has become necessary to configure an existing serial interface to accept a second Frame Relay virtual circuit.(Topic 4) Which encapsulation type is a Frame Relay encapsulation type that is supported by Cisco routers? A. IETF B. Which of the following procedures are required to accomplish this task? (Choose three. respectively. Question No : 169 . ANSI Annex D C. Cisco. Cisco.Question No : 168 . just press Enter to use it). Note: Three LMI options are supported by Cisco routers are ansi. The former is often used to connect two Cisco routers while the latter is used to connect a Cisco router to a non-Cisco router. You can test with your Cisco router when typing the command Router(config-if)#encapsulation frame-relay ? on a WAN link. and ITU Q933-A (Annex A) LMI types. HDLC Answer: A Explanation: Cisco supports two Frame Relay encapsulation types: the Cisco encapsulation and the IETF Frame Relay encapsulation.) 155 . and Q933a. which is in conformance with RFC 1490 and RFC 2427.

you must use subinterfaces. Configure static Frame Relay map entries for each subinterface network.) Answer: 156 . Remove the IP address from the physical interface. and no IP address will be assigned to the main interface.C. F. Encapsulate the physical interface with multipoint PPP. C. (Not all acronyms are used. B. E.D Explanation: For multiple PVC’s on a single interface.(Topic 4) Drag the Frame Relay acronym on the left to match its definition on the right. Create the virtual interfaces with the interface command. Answer: A. Question No : 170 DRAG DROP . Disable split horizon to prevent routing loops between the subinterface networks.A. Configure each subinterface with its own IP address. with each subinterface configured for each PVC. D. Each subinterface will then have its own IP address.

Question No : 171 - (Topic 4)
Users have been complaining that their Frame Relay connection to the corporate site is
very slow. The network administrator suspects that the link is overloaded.

Based on the partial output of the Router# show frame relay pvc command shown in the
graphic, which output value indicates to the local router that traffic sent to the corporate site
is experiencing congestion?
A. DLCI = 100
B. last time PVC status changed 00:25:40
C. in BECN packets 192
D. in FECN packets 147
E. in DE packets 0
Answer: C
Explanation:
If device A is sending data to device B across a Frame Relay infrastructure and one of the
intermediate Frame Relay switches encounters congestion, congestion being full buffers,
over-subscribed port, overloaded resources, etc, it will set the BECN bit on packets being
returned to the sending device and the FECN bit on the packets being sent to the receiving

157

device.

Question No : 172 - (Topic 4)
What is the purpose of Inverse ARP?
A. to map a known IP address to a MAC address
B. to map a known DLCI to a MAC address
C. to map a known MAC address to an IP address
D. to map a known DLCI to an IP address
E. to map a known IP address to a SPID
F. to map a known SPID to a MAC address
Answer: D
Explanation:
Dynamic address mapping relies on the Frame Relay Inverse Address Resolution Protocol
(Inverse ARP), defined by RFC 1293, to resolve a next hop network protocol (IP) address
to a local DLCI value. The Frame Relay router sends out Inverse ARP requests on its
Frame Relay PVC to discover the protocol address of the remote device connected to the
Frame Relay network. The responses to the Inverse ARP requests are used to populate an
address-to-DLCI mapping table on the Frame Relay router or access server. The router
builds and maintains this address-to-DLCI mapping table, which contains all resolved
Inverse ARP requests, including both dynamic and static mapping entries.

Question No : 173 - (Topic 4)
What occurs on a Frame Relay network when the CIR is exceeded?
A. All TCP traffic is marked discard eligible.
B. All UDP traffic is marked discard eligible and a BECN is sent.
C. All TCP traffic is marked discard eligible and a BECN is sent.
D. All traffic exceeding the CIR is marked discard eligible.

158

Answer: D
Explanation:
Committed information rate (CIR): The minimum guaranteed data transfer rate agreed to by
the Frame Relay switch. Frames that are sent in excess of the CIR are marked as discard
eligible (DE) which means they can be dropped if the congestion occurs within the Frame
Relay network.
Note: In the Frame Relay frame format, there is a bit called Discard eligible (DE) bit that is
used to identify frames that are first to be dropped when the CIR is exceeded.

Question No : 174 - (Topic 4)
Refer to the exhibit.

In the Frame Relay network, which IP addresses would be assigned to the interfaces with
point-to-point PVCs?
A. DLCI 16: 192.168.10.1 /24
DLCI 17: 192.168.10.1 /24
DLCI 99: 192.168.10.2 /24
DLCI 28: 192.168.10.3 /24
B. DLCI 16: 192.168.10.1 /24
DLCI 17: 192.168.11.1 /24
DLCI 99: 192.168.12.1 /24
DLCI 28: 192.168.13.1 /24
159

C. DLCI 16: 192.168.10.1 /24
DLCI 17: 192.168.11.1 /24
DLCI 99: 192.168.10.2 /24
DLCI 28: 192.168.11.2 /24
D. DLCI 16: 192.168.10.1 /24
DLCI 17: 192.168.10.2 /24
DLCI 99: 192.168.10.3 /24
DLCI 28: 192.168.10.4 /24
Answer: C
Explanation:
With point to point PVC’s, each connection needs to be in a separate subnet. The R2-R1
connection (DLCI 16 to 99) would have each router within the same subnet. Similarly, the
R3-R1 connection would also be in the same subnet, but it must be in a different one than
the R2-R1 connection.

Question No : 175 - (Topic 4)
The output of the show frame-relay pvc command shows "PVC STATUS = INACTIVE".
What does this mean?
A. The PVC is configured correctly and is operating normally, but no data packets have
been detected for more than five minutes.
B. The PVC is configured correctly, is operating normally, and is no longer actively seeking
the address of the remote router.
C. The PVC is configured correctly, is operating normally, and is waiting for interesting
traffic to trigger a call to the remote router.
D. The PVC is configured correctly on the local switch, but there is a problem on the
remote end of the PVC.
E. The PVC is not configured on the local switch.
Answer: D
Explanation:
The PVC STATUS displays the status of the PVC. The DCE device creates and sends the
report to the DTE devices. There are 4 statuses:
+ ACTIVE: the PVC is operational and can transmit data
+ INACTIVE: the connection from the local router to the switch is working, but the
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connection to the remote router is not available
+ DELETED: the PVC is not present and no LMI information is being received from the
Frame Relay switch
+ STATIC: the Local Management Interface (LMI) mechanism on the interface is disabled
(by using the “no keepalive” command). This status is rarely seen so it is ignored in some
books.

Question No : 176 - (Topic 4)
Which two options are valid WAN connectivity methods? (Choose two.)
A. PPP
B. WAP
C. DSL
D. L2TPv3
E. Ethernet
Answer: A,C
Explanation:
The Point-to-Point Protocol (PPP) provides a standard method for transporting multiprotocol datagrams over point-to-point links. PPP was originally emerged as an
encapsulation protocol for transporting IP traffic between two peers. It is a data link layer
protocol used for WAN connections.
DSL is also considered a WAN connection, as it can be used to connect networks, typically
when used with VPN technology.

Question No : 177 - (Topic 4)
Which command allows you to verify the encapsulation type (CISCO or IETF) for a Frame
Relay link?
A. show frame-relay lmi
B. show frame-relay map
161

C. show frame-relay pvc
D. show interfaces serial
Answer: B
Explanation:
When connecting Cisco devices with non-Cisco devices, you must use IETF4
encapsulation on both devices. Check the encapsulation type on the Cisco device with the
show frame-relay map exec command.

Question No : 178 - (Topic 4)
A network administrator needs to configure a serial link between the main office and a
remote location. The router at the remote office is a non-Cisco router. How should the
network administrator configure the serial interface of the main office router to make the
connection?
A. Main(config)# interface serial 0/0
Main(config-if)# ip address 172.16.1.1 255.255.255.252
Main(config-if)# no shut
B. Main(config)# interface serial 0/0
Main(config-if)# ip address 172.16.1.1 255.255.255.252
Main(config-if)# encapsulation ppp
Main(config-if)# no shut
C. Main(config)# interface serial 0/0
Main(config-if)# ip address 172.16.1.1 255.255.255.252
Main(config-if)# encapsulation frame-relay
Main(config-if)# authentication chap
Main(config-if)# no shut
D. Main(config)# interface serial 0/0
Main(config-if)#ip address 172.16.1.1 255.255.255.252
Main(config-if)#encapsulation ietf
Main(config-if)# no shut
Answer: B
Explanation:
With serial point to point links there are two options for the encapsulation. The default,
HDLC, is Cisco proprietary and works only with other Cisco routers. The other option is

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PPP which is standards based and supported by all vendors.

Question No : 179 - (Topic 4)
What is the result of issuing the frame-relay map ip 192.168.1.2 202 broadcast command?
A. defines the destination IP address that is used in all broadcast packets on DCLI 202
B. defines the source IP address that is used in all broadcast packets on DCLI 202
C. defines the DLCI on which packets from the 192.168.1.2 IP address are received
D. defines the DLCI that is used for all packets that are sent to the 192.168.1.2 IP address
Answer: D
Explanation:
This command identifies the DLCI that should be used for all packets destined to the
192.168.1.2 address. In this case, DLCI 202 should be used.

Question No : 180 - (Topic 4)
Which command is used to enable CHAP authentication, with PAP as the fallback method,
on a serial interface?
A. Router(config-if)# ppp authentication chap fallback ppp
B. Router(config-if)# ppp authentication chap pap
C. Router(config-if)# authentication ppp chap fallback ppp
D. Router(config-if)# authentication ppp chap pap
Answer: B
Explanation:
This command tells the router first to use CHAP and then go to PAP if CHAP isn't
available.

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status defined. the number of BECN packets that are received by the router B.4.0x6430). you cannot assign multiple interfaces in a router that belong to the same IP subnet..4.4. dynamic. emulating virtual point to point leased lines. the status of the PVC that is configured on the router E. broadcast. They are ideal for full-mesh topologies. E. They create split-horizon issues. active Serial0/0 (up): ip 10. Question No : 182 . 164 .C Explanation: Subinterfaces are used for point to point frame relay connections. They emulate leased lines. dynamic.(Topic 4) Which two statistics appear in show frame-relay map output? (Choose two. They require the use of NBMA options when using OSPF. D. the IP address of the local router Answer: B.D Explanation: Sample “show frame-relay map” output: R1#sh frame map Serial0/0 (up): ip 10. the value of the local DLCI C.0x6410). Each subinterface requires a unique IP address/subnet. Answer: B.Question No : 181 .4.3 dlci 403(0x193.(Topic 4) What are two characteristics of Frame Relay point-to-point subinterfaces? (Choose two. Remember. B. C. They require a unique subnet within a routing domain.) A. the number of FECN packets that are received by the router D.1 dlci 401(0x191.) A.

4. active Question No : 183 . 165 . CHAP uses a three-way handshake. C.4 dlci 401(0x191. status defined.) A.4. show frame-relay lmi C. status defined. show frame-relay pvc B.0x6410). status defined. broadcast. show frame relay end-to-end Answer: C Explanation: Sample “show frame-relay map” output: R1#sh frame map Serial0/0 (up): ip 10. active Serial0/0 (up): ip 10. static. active Serial0/0 (up): ip 10..4.(Topic 4) Which two statements about using the CHAP authentication mechanism in a PPP link are true? (Choose two.1 dlci 401(0x191. CHAP uses a two-way handshake. dynamic.4. show frame-relay map D.broadcast.. active Serial0/0 (up): ip 10.4. status defined. active Question No : 184 .4. static.4.4. CISCO.. status defined. CHAP authentication periodically occurs after link establishment.4 dlci 401(0x191.0x6410).3 dlci 403(0x193.0x6410). CISCO. B.(Topic 4) What command is used to verify the DLCI destination address in a Frame Relay static configuration? A. dynamic.0x6430). broadcast.

Answer: B.8 102 broadcast was entered on the router. E.16. so the PVC supports broadcast. Which of the following statements is true concerning this command? A. E. B.C Explanation: CHAP is an authentication scheme used by Point to Point Protocol (PPP) servers to validate the identity of remote clients.(Topic 4) The command frame-relay map ip 10. This command is required for all Frame Relay configurations.(Topic 4) 166 . Question No : 186 . CHAP periodically verifies the identity of the client by using a three-way handshake. Question No : 185 . C. allowing the routing protocol updates that use the broadcast update mechanism to be forwarded across itself.121. CHAP authentication passwords are sent in plaintext.D. 102 is the remote DLCI that will receive the information. The IP address 10. D. This command should be executed from the global configuration mode. Answer: E Explanation: Broadcast is added to the configurations of the frame relay. This happens at the time of establishing the initial link (LCP).8 is the local router port used to forward data. to be forwarded across the PVC. The broadcast option allows packets. such as RIP updates. F.121. The verification is based on a shared secret (such as the client user's password).16. and may happen again at any time afterwards. CHAP authentication is performed only upon link establishment. CHAP has no protection from playback attacks.

That makes answer C correct.2 255.0. After reviewing the command output and graphic.100. Question No : 187 . Both routers are running IOS version 12. incorrect IP address Answer: C Explanation: First we have to say this is an unclear question and it is wrong.255.(Topic 4) At which layer of the OSI model does PPP perform? A. Maybe the “ip address 172. incorrect LMI configuration C.16. Layer 2 B.0 command should be “ip address 172.0.0.RouterA is unable to reach RouterB.255. The “frame-relay map ip” statement is correct thus none of the four answers above is correct. But we guess there is a typo in the output. incorrect bandwidth configuration B. Layer 5 Answer: A Explanation: 167 . incorrect map statement D. Layer 3 C.16.0.1 255. Layer 4 D. what is the most likely cause of the problem? A.100.

It cannot be used on R3 or R1. D. 168 . Answer: C Explanation: DLCI-Data Link Connection Identifier Bits: The DLCI serves to identify the virtual connection so that the receiving end knows which information connection a frame belongs to. DLCI 17 is the Layer 2 address used by R2 to describe a PVC to R3. C. B. DLCI 17 describes the ISDN circuit between R2 and R3. Which statement describes DLCI 17? A.(Topic 4) Refer to the exhibit. PPP was originally emerged as an encapsulation protocol for transporting IP traffic between two peers. It is a data link layer protocol (layer 2 in the OSI model) Question No : 188 . Frame Relay is strictly a Layer 2 protocol suite. Note that this DLCI has only local significance. DLCI 17 describes a PVC on R2. DLCI 17 describes the dial-up circuit from R2 and R3 to the service provider.The Point-to-Point Protocol (PPP) provides a standard method for transporting multiprotocol datagrams over point-to-point links.

each group representing 16 bits (two octets). data integrity.(Topic 4) Which protocol is an open standard protocol framework that is commonly used in VPNs. RSA B. An example of an IPv6 address is 2001:0db8:85a3:0000:0000:8a2e:0370:7334. The leading 0’s in a group 169 . Infrastructure Services Question No : 190 . IPsec D. to provide secure end-to-end communications? A. PPTP Answer: C Explanation: IPSec is a framework of open standards that provides data confidentiality. and data authentication between participating peers at the IP layer. 2001:0db8:0000:130F:0000:0000:08GC:140B B.(Topic 5) Which IPv6 address is valid? A. The groups are separated by colons (:). L2TP C. 2031:0:130F::9C0:876A:130B Answer: D Explanation: An IPv6 address is represented as eight groups of four hexadecimal digits. Topic 5. 2031::130F::9C0:876A:130B D.Question No : 189 . IPSec can be used to protect one or more data flows between IPSec peers. 2001:0db8:0:130H::87C:140B C.

host B IP address: 192.1.168. each hosts must also be in the same subnet as fa0/0.F Explanation: It’s a “router-on-a-stick” configuration. host B IP address: 192. Question No : 191 . but this can only be done once in an IP address. Which three values could be used for the configuration of these hosts? (Choose three.1.) A.1.10 IP address as their default gateway.168. 170 . host A IP address: 192.20.1. host A IP address: 192.168.79 B.can be collapsed using ::. VLAN 10 is configured on fa0/0.10 and VLAN 20 on fa0/0.129 F.1.168.1.(Topic 5) Refer to the exhibit. So each hosts in VLAN 10 must use fa0/0.10 IP – same with hosts in VLAN 20.168.190 Answer: A. host B default gateway: 192. Which means each host in the VLAN must corresponds with the VLAN configured on the sub-interfaces.64 C.128 E.78 D. A network administrator is adding two new hosts to SwitchA. host A default gateway: 192.C.168.

168. SNMP is defined in RFCs 3411 to 3418. Host B (using port 9 – VLAN 20) must use IP 192. supervisor F. you must define the relationship between the manager and the agent.168.168.168.78. agent C.168. default gateway 192.168.128 – .78 /27: 192.190. AES E.So find out the usable IP addresses on each sub-interfaces – for 192. set D.com/c/en/us/td/docs/switches/datacenter/nexus1000/sw/4_0_4_s_v_1_3/s ystem_management/configuration/guide/n1000v_system/n1000v_system_10snmp. to managing systems.F Explanation: The SNMP framework consists of three parts: •An SNMP manager — The system used to control and monitor the activities of network devices using SNMP. •An SNMP agent — The software component within the managed device that maintains the data for the device and reports these data. as needed. manager Answer: A.168. default gateway 192.1.1. Question No : 192 . To enable the SNMP agent.B.cisco.html 171 .190.65 – .1.(Topic 5) What are three components that comprise the SNMP framework? (Choose three.130 /26: 192.79.94 and for 192.130.1.) A. Host A (using port 6 – VLAN 10) must use IP 192. Reference: http://www. Cisco Nexus 1000V supports the agent and MIB.1. MIB B.1. •A managed information base (MIB) — The collection of managed objects on the SNMP agent.1.168.1.

They are always present in the NAT table.(Topic 5) Which two statements about static NAT translations are true? (Choose two. Question No : 194 . to allow two or more connections to be initiated from the outside. Error E.(Topic 5) What levels will be trapped if the administrator executes the command router(config)# logging trap 4 (Choose four) A.Question No : 193 . D. They require no inside or outside interface markings because addresses are statically defined. Emergency B. C.D. they are always present in the NAT table even if they are not actively in use. Since these are static.C. Warning Answer: A. Alert D.C Explanation: Static NAT is to map a single outside IP address to a single inside IP address.E Explanation: The Message Logging is divided into 8 levels as listed below: Level Keyword Description 172 . They allow connections to be initiated from the outside. B. Notice C. They can be configured with access lists.) A. Answer: A. This is typically done to allow incoming connections from the outside (Internet) to the inside.

IP address: 192.20. IP address: 192.255.20.255.255.255.0 Default Gateway: 192. by using the “logging trap 4 command.255.168.25 Answer: C Explanation: 173 .168.168. Which of the following should be entered into the IP properties box for the sales server? A.(Topic 5) An administrator must assign static IP addresses to the servers in a network.168.20.255.248 Default Gateway: 192. that level and all the higher levels will be logged.20.254 Subnet Mask: 255. conditions exist 6 informational Informational messages 7 debugging Debugging messages If you specify a level with the “logging trap level” command. all the logging of emergencies.20.168.255.168.0 emergencies System is unusable 1 alerts Immediate action is needed 2 critical Critical conditions exist 3 errors Error conditions exist 4 warnings Warning conditions exist 5 notification Normal.168.24/29.9 B.168.168. the router is assigned the first usable host address while the sales server is given the last usable host address. but significant. Question No : 195 . For network 192. IP address: 192.20. errors.240 Default Gateway: 192.248 Default Gateway: 192.20.30 Subnet Mask: 255.20.1 C.14 Subnet Mask: 255.255.255. critical. IP address: 192.30 Subnet Mask: 255.20. IP address: 192. alerts.20.168.255.17 E. For example.168.25 D. warnings will be logged.20.30 Subnet Mask: 255.240 Default Gateway: 192.

Question No : 196 . IP address used by the interfaces E.) A. Answer: A Explanation: Private RFC 1918 IP addresses are meant to be used by organizations locally within their own network only. The NAT process will be used to translate this address to a valid IP address. Addresses in a private range will not be routed on the Internet backbone. designated IP address to the DHCP server Answer: A. B.For the 192.25 (router) – 192.(Topic 5) When a DHCP server is configured.24.24/29 network.168. IP address leased to the LAN D. C. network or subnetwork IP address B. the usable hosts are 192.168.(Topic 5) What will happen if a private IP address is assigned to a public interface connected to an ISP? A. because other public routers can use the same range.24.30 (used for the sales server).20. manually assigned address to the clients F. which two IP addresses should never be assignable to hosts? (Choose two.B Explanation: 174 . Only the ISP router will have the capability to access the public network. D. Question No : 197 . broadcast address on the network C.168. A conflict of IP addresses happens. and cannot be used globally for Internet use.

GLBP is an open source standardized protocol that can be used with multiple vendors. GLBP supports up to 1024 virtual routers. Answer: B. C. GLBP can load share traffic across a maximum of four routers. Question No : 198 .E Question No : 199 . you will receive an error message saying that they can’t be assignable.255/24) should never be assignable to hosts.(Topic 5) Refer to the exhibit.0. B.0/8 or 13.1. 175 . E. GLBP elects two AVGs and two standby AVGs for redundancy. F.(Topic 5) What are three benefits of GLBP? (Choose three.0. D.Network or subnetwork IP address (for example 11.0/16) and broadcast address (for example 23.) A.2. GLBP supports clear text and MD5 password authentication between GLBP group members. GLBP supports up to eight virtual forwarders per GLBP group. When try to assign these addresses to hosts.1.0.D.

The number 1 referred to in the ip nat inside source command references access-list number 1.0/24 and 172.16. FF02::1 176 . C. the Serial0/0 interface address will not support the NAT configuration as shown. D.0/24. Question No : 200 . Answer: C Explanation: The “list 1 refers to the access-list number 1.(Topic 5) Which IPv6 address is the all-router multicast group? A.What statement is true of the configuration for this network? A. B.16.1. Because of the addressing on interface FastEthernet0/1.2. The configuration that is shown provides inadequate outside address space for translation of the number of inside addresses that are supported. ExternalRouter must be configured with static routes to networks 172.

Configure IP address parameters from DHCP server to a host.B. F. Monitor IP performance using the DHCP server. It involves clients and a server operating in a client-server model. Assign and renew IP address from the default pool.(Topic 5) Which two tasks does the Dynamic Host Configuration Protocol perform? (Choose two.F Explanation: The Dynamic Host Configuration Protocol (DHCP) is a network protocol used to configure devices that are connected to a network (known as hosts) so they can communicate on that network using the Internet Protocol (IP). Set the IP gateway to be used by the network. E.) A. C. D. Provide an easy management of layer 3 devices. Answer: C. FF02::2 C. Perform host discovery used DHCPDISCOVER message. DHCP servers assigns IP addresses from a pool of addresses and also assigns other parameters such as DNS and default gateways to hosts. 177 . B. FF02::4 Answer: B Explanation: Well-known IPv6 multicast addresses: Address Description ff02::1 All nodes on the local network segment ff02::2 All routers on the local network segment Question No : 201 . FF02::3 D.

Moreover. and VPN 3000 Concentrators use facility local7 while Cisco PIX Firewalls use local4 to send syslog messages.asp?p=426638 Question No : 203 . local4 B. Reference: http://www.0. 10. Cisco IOS devices. local6 D.com/articles/article.0 /24 178 .(Topic 5) What is the default Syslog facility level? A.0 /23 D.0.0. What is the most appropriate summarization for these routes? A.0.0.(Topic 5) Refer to the exhibit.0.0. 10.0 /21 B.ciscopress. local5 C. CatOS switches.0 /22 C. most Cisco devices provide options to change the facility level from their default value.Question No : 202 .0. 10. 10. local7 Answer: D Explanation: By default.

podcast E. and only those four networks.0.0. anycast B. according to the routing protocol’s definition of distance.Answer: B Explanation: The 10. Question No : 205 .0.0 networks. broadcast C. 10. usually belonging to different nodes. A packet sent to an anycast address is delivered to just one of the member interfaces.2. and differ only by their presence in the network at multiple points. A unicast address identifies a single network interface.0.) A. The Internet Protocol delivers packets sent to a unicast address to that specific interface. An anycast address is assigned to a group of interfaces. A packet that is sent to a multicast address is delivered to all interfaces that have joined the corresponding multicast group. Anycast addresses cannot be identified easily.0.1. typically the nearest host.0.(Topic 5) Which two are features of IPv6? (Choose two.0/22 subnet mask will include the 10. which acquire the multicast address destination by participating in the multicast distribution protocol among the network routers.0. multicast D.0. they have the same format as unicast addresses.0. Almost any unicast address can be employed as an anycast address.(Topic 5) 179 .0. and 10. Question No : 204 . A multicast address is also used by multiple hosts. allcast Answer: A. and multicast addressing. 10.3.C Explanation: IPv6 addresses are classified by the primary addressing and routing methodologies common in networking: unicast addressing. anycast addressing.

5E00.AE01 C. D. There are two version of HSRP. Answer: B.0C07. Every IPv6 interface contains at least one loopback address.Which two of these statements are true of IPv6 address representation? (Choose two. C. in which xx is the HSRP group.ACxx . 0000. every interface can have multiple unique local and global addresses. A single interface may be assigned multiple IPv6 addresses of any type. 0000.5E00. Every IPv6-enabled interface must contain at least one loopback and one link-local address. anycast.01A3 B. Leading zeros in an IPv6 16 bit hexadecimal field are mandatory. multicast).AC15 D. + With HSRP version 1. multicast. the virtual router’s MAC address is 0000. There are four types of IPv6 addresses: unicast.Fxxx.) A. Reference: IPv6 Addressing at a Glance – Cisco PDF Question No : 206 . and broadcast.B400.C Explanation: A single interface may be assigned multiple addresses of any type (unicast.0c07. the virtual MAC address if 0000.B301 Answer: C Explanation: With HSRP. anycast. 0007. E. The first 64 bits represent the dynamically created interface ID.(Topic 5) What is a valid HSRP virtual MAC address? A. in which xxx is the HSRP group. 180 .0C9F. B. + With HSRP version 2. 0007. two or more devices support a virtual router with a fictitious MAC address and unique IP address. Optionally.

Hosts can simultaneously reach IPv4 and IPv6 content. translators. 8 D. configure IPv6 directly C. 16 181 . enable dual-stack routing B.73A0.) A. use DHCPv6 to map IPv4 addresses to IPv6 addresses Answer: A.(Topic 5) How many bits are contained in each field of an IPv6 address? A.73A0. and dual stack.0FFF. (Choose three.D Explanation: Several methods are used terms of migration including tunneling.(Topic 5) What are three approaches that are used when migrating from an IPv4 addressing scheme to an IPv6 scheme. statically map IPv4 addresses to IPv6 addresses F.0000 through 0005. 24 B. With dual stack. Question No : 207 . in which the MAC address range from 0005. 4 C. devices are able to run IPv4 and IPv6 together and if IPv6 communication is possible that is the preferred protocol. Dual stack uses a combination of both native IPv4 and IPv6. Question No : 208 . while translators simply translate IPv6 packets into IPv4 packets. configure IPv4 tunnels between IPv6 islands D. Tunnels are used to carry one protocol inside another. use proxying and translation to translate IPv6 packets into IPv4 packets E.Note: Another case is HSRP for IPv6.C.

Answer: D
Explanation:
An IPv6 address is represented as eight groups of four hexadecimal digits, each group
representing 16 bits (two octets). The groups are separated by colons (:). An example of an
IPv6 address is 2001:0db8:85a3:0000:0000:8a2e:0370:7334.

Question No : 209 - (Topic 5)
You have been asked to come up with a subnet mask that will allow all three web servers
to be on the same network while providing the maximum number of subnets. Which
network address and subnet mask meet this requirement?
A. 192.168.252.0 255.255.255.252
B. 192.168.252.8 255.255.255.248
C. 192.168.252.8 255.255.255.252
D. 192.168.252.16 255.255.255.240
E. 192.168.252.16 255.255.255.252
Answer: B
Explanation:
A subnet mask of 255.255.255.248 will allow for up to 6 hosts to reside in this network. A
subnet mask of 255.255.255.252 will allow for only 2 usable IP addresses, since we cannot
use the network or broadcast address.

Question No : 210 - (Topic 5)
Refer to the diagram.

182

All hosts have connectivity with one another. Which statements describe the addressing
scheme that is in use in the network? (Choose three.)
A. The subnet mask in use is 255.255.255.192.
B. The subnet mask in use is 255.255.255.128.
C. The IP address 172.16.1.25 can be assigned to hosts in VLAN1
D. The IP address 172.16.1.205 can be assigned to hosts in VLAN1
E. The LAN interface of the router is configured with one IP address.
F. The LAN interface of the router is configured with multiple IP addresses.
Answer: B,C,F
Explanation:
The subnet mask in use is 255.255.255.128: This is subnet mask will support up to 126
hosts, which is needed.
The IP address 172.16.1.25 can be assigned to hosts in VLAN1: The usable host range in
this subnet is 172.16.1.1-172.16.1.126
The LAN interface of the router is configured with multiple IP addresses: The router will
need 2 subinterfaces for the single physical interface, one with an IP address that belongs
in each VLAN.

Question No : 211 - (Topic 5)

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Which three features are added in SNMPv3 over SNMPv2?
A. Message Integrity
B. Compression
C. Authentication
D. Encryption
E. Error Detection
Answer: A,C,D
Explanation:
Cisco IOS software supports the following versions of SNMP:
+ SNMPv1 – The Simple Network Management Protocol: A Full Internet Standard, defined
in RFC 1157. (RFC 1157 replaces the earlier versions that were published as RFC 1067
and RFC 1098.) Security is based on community strings.
+ SNMPv2c – The community-string based Administrative Framework for SNMPv2.
SNMPv2c (the “c” stands for “community”) is an Experimental Internet Protocol defined in
RFC 1901, RFC 1905, and RFC 1906. SNMPv2c is an update of the protocol operations
and data types of SNMPv2p (SNMPv2 Classic), and uses the community-based security
model of SNMPv1.
+ SNMPv3 – Version 3 of SNMP. SNMPv3 is an interoperable standards-based protocol
defined in RFCs 2273 to 2275. SNMPv3 provides secure access to devices by a
combination of authenticating and encrypting packets over the network. The security
features provided in SNMPv3 are as follows:
– Message integrity: Ensuring that a packet has not been tampered with in transit.
– Authentication: Determining that the message is from a valid source.
– Encryption: Scrambling the contents of a packet prevent it from being learned by an
unauthorized source.

Question No : 212 - (Topic 5)
The network administrator needs to address seven LANs. RIP version 1 is the only routing
protocol in use on the network and subnet 0 is not being used. What is the maximum
number of usable IP addresses that can be supported on each LAN if the organization is
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using one class C address block?
A. 8
B. 6
C. 30
D. 32
E. 14
F. 16
Answer: C
Explanation:
Since there is one class C network that means 256 total IP addresses. Since we need 7
LAN blocks and we cannot use the first one (subnet 0) we take 256/8=32 hosts. However,
since we need to reserve the network and broadcast addresses for each of these subnets,
only 30 total IP addresses are usable.

Question No : 213 - (Topic 5)
How is an EUI-64 format interface ID created from a 48-bit MAC address?
A. by appending 0xFF to the MAC address
B. by prefixing the MAC address with 0xFFEE
C. by prefixing the MAC address with 0xFF and appending 0xFF to it
D. by inserting 0xFFFE between the upper three bytes and the lower three bytes of the
MAC address
E. by prefixing the MAC address with 0xF and inserting 0xF after each of its first three
bytes
Answer: D
Explanation:
The modified EUI-64 format interface identifier is derived from the 48-bit link-layer (MAC)
address by inserting the hexadecimal number FFFE between the upper three bytes (OUI
field) and the lower three bytes (serial number) of the link layer address.

185

Question No : 214 - (Topic 5)
Refer to the exhibit.

What is the cause of the Syslog output messages?
A. The EIGRP neighbor on Fa0/1 went down due to a failed link.
B. The EIGRP neighbor connected to Fa0/1 is participating in a different EIGRP process,
causing the adjacency to go down.
C. A shut command was executed on interface Fa0/1, causing the EIGRP adjacency to go
down.
D. Interface Fa0/1 has become error disabled, causing the EIGRP adjacency to go down.
Answer: C
Explanation:
The first lines of the message show that a configuration change was made, and that the
fa0/1 interface changed to a state of administratively down. This can only be done by
issuing the shutdown command. The last line indicates that this caused an EIGRP neighbor
adjacency to go down.

Question No : 215 - (Topic 5)
What command instructs the device to timestamp Syslog debug messages in milliseconds?
A. service timestamps log datetime localtime<input type
B. service timestamps debug datetime msec<input type
C. service timestamps debug datetime localtime<input type
D. service timestamps log datetime msec
Answer: B
Explanation:

186

Enable millisecond (msec) timestamps using the service timestamps command:
router(config)#service timestamps debug datetime msec.
router(config)#service timestamps log datetime msec The “service timestamps debug”.
command configures the system to apply a time stamp to debugging messages. The timestamp format for datetime is MMM DD HH:MM:SS, where MMM is the month, DD is the
date, HH is the hour (in 24-hour notation), MM is the minute, and SS is the second. With
the additional keyword msec, the system includes milliseconds in the time stamp, in the
format HH:DD:MM:SS.mmm, where .mmm is milliseconds.

Question No : 216 - (Topic 5)
Which two statements describe characteristics of IPv6 unicast addressing? (Choose two.)
A. Global addresses start with 2000::/3.
B. Link-local addresses start with FE00:/12.
C. Link-local addresses start with FF00::/10.
D. There is only one loopback address and it is ::1.
E. If a global address is assigned to an interface, then that is the only allowable address for
the interface.
Answer: A,D
Explanation:
Below is the list of common kinds of IPv6 addresses:

187

Question No : 217 - (Topic 5)
Which command enables IPv6 forwarding on a Cisco router?
A. ipv6 local
B. ipv6 host
C. ipv6 unicast-routing
D. ipv6 neighbor
Answer: C
Explanation:
To enable IPv6 routing on the Cisco router use the following command:
ipv6 unicast-routing
If this command is not recognized, your version of IOS does not support IPv6.

Question No : 218 - (Topic 5)
Which statement describes the process of dynamically assigning IP addresses by the
DHCP server?
A. Addresses are allocated after a negotiation between the server and the host to
determine the length of the agreement.
B. Addresses are permanently assigned so that the hosts uses the same address at all
times.
C. Addresses are assigned for a fixed period of time, at the end of the period, a new
request for an address must be made.
D. Addresses are leased to hosts, which periodically contact the DHCP server to renew the
lease.
Answer: D
Explanation:
The DHCP lifecycle consists of the following:
Allocation: A client begins with no active lease, and hence, no DHCP-assigned
address. It acquires a lease through a process of allocation.
188

the client functions normally. for example.(Topic 5) Which three are the components of SNMP? (Choose three) A. SNMP Manager C. using its assigned IP address and other parameters during the “main part” of the lease.B. Rebinding.D Explanation: SNMP is an application-layer protocol that provides a message format for communication between SNMP managers and agents. then the client will try to rebind to any active DHCP server. Set Answer: A. the client will attempt to contact the server that initially granted the lease. SysLog Server D. The SNMP framework has three parts: + An SNMP manager + An SNMP agent + A Management Information Base (MIB) The SNMP manager is the system used to control and monitor the activities of network 189 . it will contact the DHCP server that granted it the lease to confirm the lease and acquire operating parameters. Release: The client may decide at any time that it no longer wishes to use the IP address it was assigned. to renew the lease so it can keep using its IP address. Renewal: After a certain portion of the lease time has expired. trying to extend its current lease with any server that will allow it to do so. If renewal with the original leasing server fails (because. The client is said to be bound to the lease and the address. This is sometimes called reallocation. SNMP provides a standardized framework and a common language used for the monitoring and management of devices in a network. Normal Operation: Once a lease is active. it is similar to the full allocation process but shorter. SNMP Agent E.Reallocation: If a client already has an address from an existing lease. Question No : 219 . releasing the IP address. the server has been taken offline). then when it reboots or starts up after being shut down. MIB B. and may terminate the lease.

and may terminate the lease. This is sometimes called reallocation. The SNMP framework has three parts: + An SNMP manager + An SNMP agent + A Management Information Base (MIB) The SNMP manager is the system used to control and monitor the activities of network 189 . releasing the IP address. it will contact the DHCP server that granted it the lease to confirm the lease and acquire operating parameters. The client is said to be bound to the lease and the address. the client will attempt to contact the server that initially granted the lease. SNMP provides a standardized framework and a common language used for the monitoring and management of devices in a network. Question No : 219 . If renewal with the original leasing server fails (because. it is similar to the full allocation process but shorter.B. the server has been taken offline). trying to extend its current lease with any server that will allow it to do so. then the client will try to rebind to any active DHCP server. Set Answer: A. Release: The client may decide at any time that it no longer wishes to use the IP address it was assigned.Reallocation: If a client already has an address from an existing lease. for example. Renewal: After a certain portion of the lease time has expired. the client functions normally. MIB B. Rebinding. SysLog Server D.D Explanation: SNMP is an application-layer protocol that provides a message format for communication between SNMP managers and agents. SNMP Agent E.(Topic 5) Which three are the components of SNMP? (Choose three) A. SNMP Manager C. then when it reboots or starts up after being shut down. using its assigned IP address and other parameters during the “main part” of the lease. to renew the lease so it can keep using its IP address. Normal Operation: Once a lease is active.

or switch). to managing systems. B514 : 82C3 : 0029 : EC7A : EC72 B. or the applications used on such a device. B514 : 82C3 :: 0029 : EC7A : EC72 C. which consists of collections of managed objects. you must define the relationship between the manager and the agent.(Topic 5) What is the alternative notation for the IPv6 address B514:82C3:0000:0000:0029:EC7A:0000:EC72? A. Both of these can be used in any number of combinations to notate the same address. The SNMP agent is the software component within the managed device that maintains the data for the device and reports these data. 190 .hosts using SNMP. The most common managing system is called a Network Management System (NMS). So. the extra 0’s can only be compressed once. B514 : 82C3 :: 0029 : EC7A : 0 : EC72 Answer: D Explanation: There are two ways that an IPv6 address can be additionally compressed: compressing leading zeros and substituting a group of consecutive zeros with a single double colon (::). These features range from simple command-line applications to feature-rich graphical user interfaces (such as the CiscoWorks2000 line of products). Question No : 220 . The agent and MIB reside on the routing device (router. To enable the SNMP agent on a Cisco routing device. A variety of network management applications are available for use with SNMP. It is important to note that the double colon (::) can only be used once within a single IPv6 address notation. as needed. The term NMS can be applied to either a dedicated device used for network management. B514 : 82C3 : 0029 :: EC7A : 0000 : EC72 D. access server. The Management Information Base (MIB) is a virtual information storage area for network management information.

192.16.56/27 C. A new subnet with 60 hosts has been added to the network.168.56/26 B.1.28.168.64/26 D.252 with a subnet mask of 255. Therefore subnet bits are 2 bits (8-6) in fourth octet.240. Which subnet address should this network use to provide enough usable addresses while wasting the fewest addresses? A.255. 192.1. 192.(Topic 5) Refer to the exhibit.168.1.0. 192.64/27 Answer: C Explanation: A subnet with 60 host is 2*2*2*2*2*2 = 64 -2 == 62 6 bits needed for hosts part.168.1.Question No : 221 . what is the correct network address? 191 .(Topic 5) Given an IP address 172. 8bits+ 8bits+ 8bits + 2bits = /26 /26 bits subnet is 24bits + 11000000 = 24bits + 192 256 – 192 = 64 0 -63 64 – 127 Question No : 222 .

the network range is 172.16. :: C. Question No : 224 . ::1 B.(Topic 5) Which IPv6 address is the equivalent of the IPv4 interface loopback address 127.0 Answer: A Explanation: For this example.16. 2002:7654:A1AD:61:81AF:CCC1 C. It's just a single address. 172.16.16. 2000::/3 D. 0::/10 Answer: A Explanation: In IPv6 the loopback address is written as. 172.1? A.0 C. so could also be written as ::1/128.172.1 .(Topic 5) Which option is a valid IPv6 address? A.16.24.16.0. Question No : 223 . 172.0. the network address is 172. 172. 2001:0000:130F::099a::12a B.0 D.A.255.31. ::1 This is a 128bit number. with the first 127 bits being '0' and the 128th bit being '1'.16. FEC0:ABCD:WXYZ:0067::2A4 192 .0 and the broadcast IP address is 172.0.16.28.16.0 B.16.16.31.254.

The groups are separated by colons (:).0. each group representing 16 bits (two octets).16.0.16./20 network is the best option as it includes all networks from 172. 172./20 C.16.0.0. 172.0.16.0 – 172. 172./16 D.0. An example of an IPv6 address is 2001:0db8:85a3:0000:0000:8a2e:0370:7334. The /21 subnet will 193 . 2004:1:25A4:886F::1 Answer: D Explanation: An IPv6 address is represented as eight groups of four hexadecimal digits.D. Question No : 225 ./21 B.(Topic 5) Refer to the exhibit. The leading 0’s in a group can be collapsed using ::. 172.0/18 Answer: B Explanation: The 172.0.16.0.0 and does it more efficiently than the /16 and /18 subnets. Which address range efficiently summarizes the routing table of the addresses for router Main? A. but this can only be done once in an IP address.16.16.0.16.0.

172.32.16.128.16. 172.0 /16 Answer: A Explanation: Router A receives 3 subnets: 172.64.not include all the other subnets in this one single summarized address.0/18.64. 172. what summary address would be sent from router A? A. In this VLSM addressing scheme.x.0 /16 B.0.16.32.16.0/18.0. All these 3 subnets have the same form of 172. 172.0 /24 D.0/24 and 172.(Topic 5) Refer to the exhibit. 172. B or .0 /20 C. Question No : 226 . 172. 172.16.0.32.16.0 /17 F.0.0.x so our summarized subnet must be also in that form -> Only A.0 /16 E. The smallest subnet mask of these 3 subnets is /18 so our summarized subnet must also 194 .16.0.

E. FE80::380e:611a:e14f:3d69 B. The actual link local addresses are assigned with the prefix fe80::/64. SNMPv2 added the GetBulk protocol message to SNMP.) A.(Topic 5) Which of these represents an IPv6 link-local address? A. SNMPv3 added the Inform protocol message to SNMP. FE81::280f:512b:e14f:3d69 C. SNMPv3 enhanced SNMPv2 security features.have its subnet mask equal or smaller than /18. manual) mechanisms.g. They may be assigned by automatic (stateless) or stateful (e.(Topic 5) Which three statements about the features of SNMPv2 and SNMPv3 are true? (Choose three. Question No : 227 . C. F.E Explanation: 195 . D. SNMPv2 added the GetNext protocol message to SNMP. -> Only answer A has these 2 conditions ->. SNMPv3 added the GetBulk protocol messages to SNMP. Question No : 228 . FEFE:0345:5f1b::e14d:3d69 D. the address block fe80::/10 has been reserved for link-local unicast addressing. SNMPv2 added the Inform protocol message to SNMP. B. Answer: A.C. FE08::280e:611:a:f14f:3d69 Answer: A Explanation: In the Internet Protocol Version 6 (IPv6).

SNMPv1/v2 can neither authenticate the source of a management message nor provide encryption. The two additional messages are added in SNMP2 (compared to SNMPv1) GetBulkRequest The GetBulkRequest message enables an SNMP manager to access large chunks of data. GetBulkRequest allows an agent to respond with as much information as will fit in the response PDU. reflexive Answer: C Explanation: 196 . Question No : 229 . no network control applications can be supported. extended C. reducing their utility to that of a network monitor. not between NMS stations and agents. InformRequest The InformRequest message allows NMS stations to share trap information. (Traps are issued by SNMP agents when a device change occurs. many SNMPv1/v2 implementations are limited to simply a read-only capability.(Topic 5) A network engineer wants to allow a temporary entry for a remote user with a specific username and password so that the user can access the entire network over the Internet. To correct the security deficiencies of SNMPv1/v2. -> E is correct. Note: These two messages are carried over SNMPv3.) InformRequest messages are generally used between NMS stations. -> C is correct. it is possible for nonauthorized users to exercise SNMP network management functions. It is also possible for nonauthorized users to eavesdrop on management information as it passes from managed systems to the management system. Which ACL can be used? A. standard B. -> A is correct. Agents that cannot provide values for all variables in a list will send partial information. SNMPv3 was issued as a set of Proposed Standards in January 1998. Without authentication. Because of these deficiencies. dynamic D.

0/23. shtml Question No : 230 . SET Answer: A. 10.cisco.31. You are asked to develop an IP addressing plan to allow the maximum number of subnets with as many as 30 hosts each.0/26 197 .com/en/US/tech/tk583/tk822/technologies_tech_note09186a0080094524. Their purpose is merely to notify the other application that something has happened. INFORM C.B Explanation: A TRAP is a SNMP message sent from one application to another (which is typically on a remote host). TRAP B.(Topic 5) You are working in a data center environment and are assigned the address range 10. has been noticed.(Topic 5) What are the alert messages generated by SNMP agents called? A.188.188. which is nothing more than an acknowledged TRAP. etc.31. The configuration of dynamic ACL can be read here: http://www. SNMPv2 PDUs fixed this by introducing the notion of an INFORM.We can use a dynamic access list to authenticate a remote user with a specific username and password. The big problem with TRAPs is that they’re unacknowledged so you don’t actually know if the remote application received your oh-soimportant message to it. The authentication process is done by the router or a central access server such as a TACACS+ or RADIUS server. GET D. Which IP address range meets these requirements? A. Question No : 231 .

0/29 Answer: D Explanation: Each subnet has 30 hosts < 32 = 25 so we need a subnet mask which has at least 5 bit 0s -> /27.(Topic 5) Refer to the exhibit. the address is removed from the pool. C. Only the IP detected by Ping is removed from the pool.31.188. Only the IP detected by Gratuitous ARP is removed from the pool. even after the conflict is resolved. E.0/27 E. Which rule does the DHCP server use when there is an IP address conflict? A. 198 . The address will not be assigned until the administrator resolves the conflict. 10.31. Answer: A Explanation: An address conflict occurs when two hosts use the same IP address. Also the question requires the maximum number of subnets (which minimum the number of hosts-per-subnet) so /27 is the best choice. The IP will be shown.188. B. DHCP checks for conflicts using ping and gratuitous ARP.31. The address is removed from the pool until the conflict is resolved.0/28 D.188. 10.188. During address assignment. D.0/25 C.31. The address remains in the pool until the conflict is resolved. Question No : 232 . 10. 10.B. If a conflict is detected.

who is responsible for the ARP request? A.com/en/US/docs/ios/12_1/iproute/configuration/guide/1cddhcp. These gateways are known as active virtual forwarders (AVFs) for their virtual MAC address. It monitors traffic flow and link utilization.html Question No : 234 . AVF B. B.(Topic 5) Which statement describes VRRP object tracking? A. Reference: http://www.(Topic 5) In a GLBP network.(Reference: http://www. Load sharing is achieved by the AVG replying to the ARP requests with different virtual MAC addresses. The AVG is responsible for answering Address Resolution Protocol (ARP) requests for the virtual IP address.cisco. Each gateway assumes responsibility for forwarding packets sent to the virtual MAC address assigned to it by the AVG.com/en/US/docs/ios/12_2t/12_2t15/feature/guide/ft_glbp. AVG C. It ensures the best VRRP router is the virtual router master for the group.html) Question No : 233 . Standby Router Answer: B Explanation: Members of a GLBP group elect one gateway to be the active virtual gateway (AVG) for that group.cisco. The AVG assigns a virtual MAC address to each member of the GLBP group. Other group members provide backup for the AVG in the event that the AVG becomes unavailable. Active Router D. 199 .

(RFC 1157 replaces the earlier versions that were published as RFC 1067 and RFC 1098. Question No : 235 . community strings Answer: D Explanation: SNMP Versions Cisco IOS software supports the following versions of SNMP: •SNMPv1 — The Simple Network Management Protocol: A Full Internet Standard. HMAC-MD5 B. and RFC 1906. SNMP Security Models and Levels Model 200 . SNMPv2c is an update of the protocol operations and data types of SNMPv2p (SNMPv2 Classic). It thwarts man-in-the-middle attacks. and uses the community-based security model of SNMPv1. SNMPv3 provides secure access to devices by a combination of authenticating and encrypting packets over the network. defined in RFC 1157. •SNMPv2c — The community-string based Administrative Framework for SNMPv2. D. SNMPv2c (the "c" stands for "community") is an Experimental Internet Protocol defined in RFC 1901.(Topic 5) What authentication type is used by SNMPv2? A. SNMPv3 is an interoperable standards-based protocol defined in RFCs 2273 to 2275. CBC-DES D.C. •SNMPv3 — Version 3 of SNMP. Answer: B Explanation: Object tracking is the process of tracking the state of a configured object and uses that state to determine the priority of the VRRP router in a VRRP group. It causes traffic to dynamically move to higher bandwidth links. RFC 1905.) Security is based on community strings. HMAC-SHA C.

h tml Question No : 236 .(Topic 5) 201 . v2c noAuthNoPriv Community String No Uses a community string match for authentication. v3 noAuthNoPriv Username No Uses a username match for authentication.com/c/en/us/td/docs/ios/12_2/configfun/configuration/guide/ffun_c/fcf014. Reference: http://www.Level Authentication Encryption What Happens v1 noAuthNoPriv Community String No Uses a community string match for authentication. v3 authPriv MD5 or SHA DES Provides authentication based on the HMAC-MD5 or HMAC-SHA algorithms. v3 authNoPriv MD5 or SHA No Provides authentication based on the HMAC-MD5 or HMAC-SHA algorithms.cisco. Provides DES 56-bit encryption in addition to authentication based on the CBC-DES (DES-56) standard.

Flash B. The logging process controls the distribution of logging messages to various destinations. or a UNIX syslog server. We can configure this feature with the command logging file flash:filename. ipv6 autoconfig Answer: B Explanation: To assign an IPv6 address to an interface.Which command can you use to manually assign a static IPv6 address to a router interface? A.RAM C. Question No : 237 .C. The console terminal D. use the “ipv6 address” command and specify the IP address you wish to use. ipv6 address 2001:db8:2222:7272::72/64 C. such as the logging buffer (on RAM).E Explanation: By default. Other terminals E. 202 . switches send the output from system messages and debug privileged EXEC commands to a logging process. The logging buffer . terminal lines (console terminal). ipv6 address PREFIX_1 ::1/64 D. depending on your configuration. Syslog server Answer: B. Note: Syslog messages can be written to a file in Flash memory although it is not a popular place to use. The process also sends messages to the console. ipv6 autoconfig 2001:db8:2222:7272::72/64 B.(Topic 5) What are the Popular destinations for syslog messages to be saved? (Choose three) A.

E Explanation: Here are some of the benefits of hierarchical addressing: Reduced number of routing table entries — whether it is with your Internet routers or your internal routers.Question No : 238 . Route summarization is a way of having a single IP address represent a collection of IP addresses.) A. this is most easily accomplished when you employ a hierarchical addressing plan. autoconfiguration F. change of source address in the IPv6 header C. Telnet access does not require a password E. no broadcast B. reduces routing table entries B.(Topic 5) The network administrator has been asked to give reasons for moving from IPv4 to IPv6.(Topic 5) Which two benefits are provided by using a hierarchical addressing network addressing scheme? (Choose two.E Explanation: IPv6 does not use broadcasts. auto-negotiation of media rates C.) A. NAT Answer: A. What are two valid reasons for adopting IPv6 over IPv4? (Choose two. dedicated communications between devices E. Question No : 239 . and autoconfiguration is a feature of IPV6 that allows for hosts to automatically obtain an IPv6 address. efficient utilization of MAC addresses D. change of destination address in the IPv6 header D. ease of management and troubleshooting Answer: A. By summarizing routes. you can keep your routing table entries (on the routers that receive the 203 . you should try to keep your routing tables as small as possible by using route summarization.

one router must authenticate to another router. C. E. which offers the following benefits: Efficient allocation of addresses—Hierarchical addressing lets you take advantage of all possible addresses because you group them contiguously. The routers cannot be connected from interface S0/0 to interface S0/0. D.(Topic 5) 204 . The passwords do not match on the two routers. Reference: http://www. Here.(Topic 5) Refer to the exhibit. What is the cause of the problem? A. Answer: B Explanation: With CHAP authentication.asp?p=174107 Question No : 240 . The Bigtime router is unable to authenticate to the Littletime router. With CHAP authentication.summarized routes) manageable. CHAP authentication cannot be used on a serial interface. it is configured as little123 on one side and big123 on the other. the configured passwords must be identical on each router. The usernames are incorrectly configured on the two routers.com/articles/article.ciscopress. B. Question No : 241 . The routers cannot be configured to authenticate to each other.

5.0/24 172.0/24 E.1.1.5.255. 172.0/24 Answer: C Explanation: The 172.1.1.6.0/22 subnet encompasses all routes from the IP range 172. What is the most efficient summarization that R1 can use to advertise its networks to R2? A.1.0 – 172. 172.4.1. 172.1.7.1.1.7.0.1. 172.0/24 172.0/22 D.1.4.6.1.0/21 C.1.1.0/25 172.4.4.0/22 B.(Topic 5) 205 .4.0.0/24 172.Refer to the exhibit.1.4.128/25 172.7.0/24 172. Question No : 242 .0/24 172. 172.

Addresses are leased to hosts. Addresses are allocated after a negotiation between the server and the host to determine the length of the agreement. OUI D. and another address is then assigned. BIA C. Addresses are permanently assigned so that the host uses the same address at all times. When a PC connects to a DHCP server. VAI Answer: C Explanation: An Organizationally Unique Identifier (OUI) is a 24-bit number that uniquely identifies a vendor. or other organization globally or worldwide. The PC connects to the network with that leased IP address until the lease expires. They are used as the first 24 nits of the MAC address to uniquely identify a particular piece of equipment. B. manufacturer. the server assigns or leases an IP address to that PC.(Topic 5) How does a DHCP server dynamically assign IP addresses to hosts? A. Question No : 243 . C. D. Answer: C Explanation: DHCP works in a client/server mode and operates like any other client/server relationship. Addresses are assigned for a fixed period of time. 206 . A host will usually keep the same address by periodically contacting the DHCP server to renew the lease. The host must contact the DHCP server periodically to extend the lease. a new request for an address must be made. At the end of the period.What is the first 24 bits in a MAC address called? A. NIC B. The DHCP server returns these addresses to the address pool and reallocates them as necessary. This lease mechanism ensures that hosts that move or power off do not hold onto addresses that they do not need.

255. delivery of packets to the group interface that is closest to the sending device Answer: B.255. 255.(Topic 5) Which three are characteristics of an IPv6 anycast address? (Choose three.Question No : 244 .F Explanation: A new address type made specifically for IPv6 is called the Anycast Address. The nearest router or interface is found by using the metric of a routing protocol currently running on the network. Question No : 245 .(Topic 5) Which subnet mask would be appropriate for a network address range to be subnetted for up to eight LANs. Anycast is designed to send a packet to the nearest interface that is a part of that anycast group.E. 255. The anycast packet in a LAN setting forwards the packet to the neighbor it learned about first. The sender creates a packet and forwards the packet to the anycast address as the destination address which goes to the nearest router.240 B.0. these addresses can be assigned to more than one interface unlike an IPv6 unicast address.252 C.0 207 . one-to-nearest communication model C. These IPv6 addresses are global addresses.255. the same address for multiple devices in the group F.0. any-to-many communication model D. However in a LAN setting the nearest interface is found depending on the order the neighbors were learned. 0. one-to-many communication model B. with each LAN containing 5 to 26 hosts? A.255.) A. a unique IPv6 address for each device in the group E.

255. this data is typically sent in clear text over the network.2(18)SXF contains about 90 SNMP trap notification messages. a mask of 255. D. While there are some exceptions.D. Answer: C. Logging to a central syslog server helps in aggregation of logs and alerts. A syslog 208 . Utilizing Syslog improves network performance. C.255. There are more Syslog messages available within Cisco IOS than there are comparable SNMP trap messages. A Syslog server provides the storage space necessary to store log files without using router disk space. Enabling Syslog on a router automatically enables NTP for accurate time stamping.(Topic 5) Which three statements about Syslog utilization are true? (Choose three. System logging is a method of collecting messages from devices to a server running a syslog daemon. Question No : 246 . For example. F." "Syslog daemon.F Explanation: The Syslog sender sends a small (less than 1KB) text message to the Syslog receiver. port 5000). 255." Syslog messages can be sent via UDP (port 514) and/or TCP (typically." or "Syslog server. The Syslog server automatically notifies the network administrator of network problems.) A. there are significantly more Syslog messages available within IOS as compared to SNMP Trap messages. A Syslog server provides the storage space necessary to store log files without using router disk space. The Syslog receiver is commonly called "syslogd. In general. Cisco devices can send their log messages to a UNIX-style syslog service. E.255.255.240 Answer: D Explanation: For a class C network.255.224 will allow for up to 8 networks with 32 IP addresses each (30 usable). 255.255. A Syslog server helps in aggregation of logs and alerts. but has more than 6000 Syslog event messages.D.224 E. such as SSL wrappers. a Cisco Catalyst 6500 switch running Cisco IOS Software Release 12. B.

or prints them according to a simple configuration file. Reference: http://www.html Question No : 247 .0C9F. The virtual IP address and virtual MA+K44C address are active on the HSRP Master router. enabling an administrative form of load balancing. B.AC0A.) A.ACxx. Question No : 248 .FXXX (XXX: HSRP group in hexadecimal). HSRP supports only clear-text authentication.com/c/en/us/products/collateral/services/highavailability/white_paper_c11-557812. E. For example. The HSRP virtual IP address must be the same as one of the router's interface addresses on the LAN. A DHCP client uses a ping to detect address conflicts.B.(Topic 5) Which three statements about HSRP operation are true? (Choose three.F Explanation: The virtual MAC address of HSRP version 1 is 0000.cisco.0C07. Answer: A.(Topic 5) Which statement is correct regarding the operation of DHCP? A. HSRP supports up to 255 groups per interface. The HSRP default timers are a 3 second hello interval and a 10 second dead interval. C. 209 . The HSRP virtual IP address must be on a different subnet than the routers' interfaces on the same LAN. where xx is the HSRP group number in hexadecimal based on the respective interface. HSRP group 10 uses the HSRP virtual MAC address of 0000. HSRP version 2 uses a virtual MAC address of 0000. F. D.service accepts messages and stores them in files.0C07.

the address is removed from the pool and will not be reused until the server is rebooted. F. If an address conflict is detected. as well as port information. source address and subnet mask D. During address assignment. A DHCP server uses a gratuitous ARP to detect DHCP clients.cisco. The address will not be assigned until the administrator resolves the conflict.(Topic 5) On which options are standard access lists based? A. If an address conflict is detected. If a conflict is detected. Extended ACL’s examine the source and destination address. Question No : 250 . (Reference: http://www. the address is removed from the pool. source address and wildcard mask Answer: D Explanation: Standard ACL’s only examine the source IP address/mask to determine if a match is made. D.B. DHCP checks for conflicts using ping and gratuitous ARP. A DHCP client uses a gratuitous ARP to detect a DHCP server. destination address and subnet mask C. destination address and wildcard mask B.com/en/US/docs/ios/12_1/iproute/configuration/guide/1cddhcp. the address is removed from the pool and an administrator must resolve the conflict. the address is removed from the pool for an amount of time configurable by the administrator. C.html) Question No : 249 . If an address conflict is detected.(Topic 5) 210 . E. Answer: D Explanation: An address conflict occurs when two hosts use the same IP address.

get C.What SNMP message alerts the manager to a condition on the network? A. Traps are messages alerting the SNMP manager to a condition on the network. closing of a TCP connection. Reference: http://www.cisco. response B. 255. trap D. restarts. loss of connection to a neighbor. capture Answer: C Explanation: An agent can send unsolicited traps to the manager.0 C.0 D.255. MAC address tracking.252.(Topic 5) Refer to the exhibit. 255.0 B.com/c/en/us/td/docs/switches/lan/catalyst2950/software/release/121_9_ea1/configuration/guide/scg/swsnmp.254.html Question No : 251 .255. or other significant events. 255. 255.255.255. link status (up or down).0 211 .255.248. Traps can mean improper user authentication. Which subnet mask will place all hosts on Network B in the same subnet with the least amount of wasted addresses? A.

E Explanation: Subnetting is used to break the network into smaller more efficient subnets to prevent excessive rates of Ethernet packet collision in a large network.255. the routing prefix is often expressed as a "subnet mask". In IPv4 networks.248.0 network with a 24-bit routing prefix (192. Working with only one Class B address. which of the following subnet masks will support an appropriate addressing scheme? (Choose two. 255.1111 1110. 255.255.168.255. 255.0 is the subnet mask for the 192.255.192 F.255.0 D.255.1.224 E.) A.254.252.g.0 Answer: B.255.0000 0000 -> 255.0 Question No : 252 . 255. An IPv4 subnet mask is frequently expressed in quad-dotted decimal representation.255.128 C. 255.. e.1. A routing prefix is the sequence of leading bits of an IP address that precede the portion of the address used as host identifier.0 B. 255.255. which is a bit mask covering the number of bits used in the prefix.255.255. with the organization's network address space (see also Autonomous System) partitioned into a tree-like structure.1111 1111. Routers are used to manage traffic and constitute borders between subnets. The company needs a minimum of 300 sub-networks and a maximum of 50 host addresses per subnet.255.255. 212 .(Topic 5) A national retail chain needs to design an IP addressing scheme to support a nationwide network. 255.168.0/24). Such subnets can be arranged hierarchically.Answer: B Explanation: 310 hosts < 512 = 29 -> We need a subnet mask of 9 bits 0 -> 1111 1111.

0000 0000 /30 = 1111 1111.Question No : 253 .255.10.252 E.252 D. no broadcasts D.) A.255.0. 10.0.255.0/23 is the correct answer.255. Which IP addressing scheme defines the address range and subnet mask that meet the requirement and waste the fewest subnet and host addresses? A. 10.0/25 subnetted with mask 255.255.(Topic 5) The network administrator is asked to configure 113 point-to-point links. You can understand it more clearly when writing it in binary form: /23 = 1111 1111.255.255.1. The network used for point-to-point connection should be /30. 10. 10.1.1111 1100 (borrow 7 bits) Question No : 254 .10. 10.10.0/23 subnetted with mask 255. So our initial network should be 30 – 7 = 23.0/18 subnetted with mask 255.255.0.255. complicated header 213 .252 Answer: D Explanation: We need 113 point-to-point links which equal to 113 sub-networks < 128 so we need to borrow 7 bits (because 2^7 = 128).252 C.1111 1111.0/24 subnetted with mask 255.10.1111 1110.10. So 10.0. autoconfiguration C.0/16 subnetted with mask 255.255.(Topic 5) What are three features of the IPv6 protocol? (Choose three. optional IPsec B.252 B.10.

i. However.0. The active virtual gateway will reply with one of four possible virtual MAC addresses.(Topic 5) In GLBP. plug-and-play F. Gateway Load Balancing Protocol (GLBP) can use of up to four routers simultaneously. Answer: A Explanation: One disadvantage of HSRP and VRRP is that only one router is in use. All GLBP member routers will reply in round-robin fashion.E. and therefore does not define broadcast addresses. other routers must wait for the primary to fail because they can be used.E Explanation: An important feature of IPv6 is that it allows plug and play option to the network devices by allowing them to configure themselves independently. there is still only one virtual IP address but each router has a different virtual MAC address. which is analogous to IPv4 multicast to address 224. which router will respond to client ARP requests? A. This feature was critical to allow network connectivity to an increasing number of mobile devices. In IPv6. This is accomplished by autoconfiguration. It replies with different virtual MAC addresses that correspond to different routers (known as Active Virtual Forwarders – AVFs) so that clients can send traffic to different routers in that GLBP group (load sharing). Question No : 255 . the transmission of a packet to all hosts on the attached link using a special broadcast address.C. In GLBP. checksums Answer: B. 214 . The AVG is responsible for replying ARP requests from hosts/clients. the same result can be achieved by sending a packet to the link-local all nodes multicast group at address ff02::1. The active virtual gateway will reply with its own hardware MAC address. C. The GLBP member routers will reply with one of four possible burned in hardware addresses. It is possible to plug a node into an IPv6 network without requiring any human intervention. IPv6 does not implement traditional IP broadcast. D.1. First a GLBP group must elect an Active Virtual Gateway (AVG).e.0. B.

(Topic 5) A network administrator enters the following command on a router: logging trap 3. What are three message types that will be sent to the Syslog server? (Choose three.) A.Question No : 256 . error Answer: B.F Explanation: The Message Logging is divided into 8 levels as listed below: Level Keyword Description 0 emergencies System is unusable 1 alerts Immediate action is needed 2 critical Critical conditions exist 3 errors Error conditions exist 4 warnings Warning conditions exist 5 215 .D. warning D. emergency C. informational B. critical E. debug F.

conditions exist 6 informational Informational messages 7 debugging Debugging messages If you specify a level with the “logging trap level” command. and errors. multicast D. Which 3 types of logs would be generated (choose four) 216 . meaning an Anycast address is used by a device to send data to one specific recipient (interface) that is the closest out of a group of recipients (interfaces). alerts.notification Normal. Question No : 257 . For example. that level and all the higher levels will be logged. critical. global unicast B. anycast C.(Topic 5) Syslog was configured with a level 3 trap. Question No : 258 . unspecified address Answer: B Explanation: IPv6 Anycast addresses are used for one-to-nearest communication. by using the “logging trap 3 command. will be logged. all the logging of emergencies. but significant.(Topic 5) What is known as "one-to-nearest" addressing in IPv6? A.

that level and all the higher levels will be displayed. but significant. alerts. critical. Warnings Answer: A. For example. Critical D. Emergencies B. 217 .B. by using the “logging console warnings” command. The lowest level is level 7. warnings will be displayed. Alerts C.(Topic 5) Refer to the exhibit. Question No : 259 . Errors E.D Explanation: The Message Logging is divided into 8 levels as listed below: Level Keyword Description 0 emergencies System is unusable 1 alerts Immediate action is needed 2 critical Critical conditions exist 3 errors Error conditions exist 4 warnings Warning conditions exist 5 notification Normal. conditions exist 6 informational Informational messages 7 debugging Debugging messages The highest level is level 0 (emergencies). If you specify a level with the “logging console level” command. all the logging of emergencies. errors.C.A.

16.3.192/26 D. Network A .128/25 is the best.3. Also.D Explanation: Only a /30 is needed for the point to point link and sine the use of the ip subnet-zero was used.3. C.16. 218 .All of the routers in the network are configured with the ip subnet-zero command.172.40/30 F. Question No : 260 . D.112/30 Answer: B.3. NAT eliminates the need to re-address all hosts that require external access. Link A . Link A .0/30 E. NAT conserves addresses through host MAC-level multiplexing.3.16. a /25 is required for 120 hosts and again 172.172.48/26 B.172.16.16.) A. Network A . valid option. Link A . 172.) A.128/25 C.172.3. Network A . Which network addresses should be used for Link A and Network A? (Choose two. B.172.0/30 is valid.3.172.3. Dynamic NAT facilitates connections from the outside of the network.16.16. NAT facilitates end-to-end communication when IPsec is enabled.(Topic 5) What are two benefits of using NAT? (Choose two.16.

Infrastructure Security Question No : 261 .(Topic 6) How does using the service password-encryption command on a router provide additional security? A. Connection from the outside of the network through a “NAT” network is more difficult than a more network because IP addresses of inside hosts are hidden -> C is not correct.E. By allocating specific public IP addresses to inside hosts. by encrypting all passwords passing through the router B. Answer: B. Encapsulating Security Payload (ESP) and Authentication Header (AH) -> more complex -> A is not correct. by requiring entry of encrypted passwords for access to the device D. In order for IPsec to work with NAT we need to allow additional protocols. NAT accelerates the routing process because no modifications are made on the packets. including Internet Key Exchange (IKE). NAT does conserve addresses but not through host MAC-level multiplexing. NAT eliminates the need to readdress the inside hosts -> B is correct. Topic 6. NAT protects network security because private networks are not advertised. by configuring an MD5 encrypted key to be used by routing protocols to validate routing exchanges 219 . NAT adds some security to the inside network > F is correct.F Explanation: By not revealing the internal IP addresses. by encrypting passwords in the plain text configuration file C. It conserves addresses by allowing many private IP addresses to use the same public IP address to go to the Internet -> C is not correct. F. NAT has to modify the source IP addresses in the packets -> E is not correct.

Which two of these changes are necessary for SwitchA to meet the requirements? (Choose 220 .(Topic 6) Refer to the exhibit. and then observes the output from these two show commands. the port is to drop frames from this device. If any other device is detected. A junior network administrator was given the task of configuring port security on SwitchA to allow only PC_A to access the switched network through port fa0/1. The administrator configured the interface and tested it with successful pings from PC_A to RouterA. This command is primarily useful for keeping unauthorized individuals from viewing your password in your configuration file Question No : 262 . all the (current and future) passwords are encrypted.E. by automatically suggesting encrypted passwords for use in configuring the router Answer: B Explanation: By using this command.

Statically configured MAC addresses are saved in the startup-configuration file if frames from that address are received.two. C.) A. A dynamically learned MAC address is saved in the running-configuration file. Statically configured MAC addresses are saved in the running-configuration file if frames from that address are received. Port security interface counters need to be cleared before using the show command. F. E. C. E. Port security needs to be enabled on the interface. Port security needs to be configured to shut down the interface in the event of a violation. Also. Port security needs to be configured to allow only one learned MAC address. Answer: B. the maximum number of devices is set to 2 so this needs to be just one if we want the single host to have access and nothing else. D. Port security needs to be globally enabled. Answer: B Explanation: In the interface configuration mode. The port security configuration needs to be saved to NVRAM before it can become active. A dynamically learned MAC address is saved in the startup-configuration file. A dynamically learned MAC address is saved in the VLAN database.(Topic 6) What will be the result if the following configuration commands are implemented on a Cisco switch? Switch(config-if)# switchport port-security Switch(config-if)# switchport port-security mac-address sticky A. B.D Explanation: From the output we can see that port security is disabled so this needs to be enabled. D. B. Question No : 263 . the command switchport port-security mac-address 221 .

222 . + The switch does not support port security aging of sticky secure MAC addresses. + When a voice VLAN is configured on a secure port that is also configured as a sticky secure port. up to the maximum defined. + You cannot configure static secure or sticky secure MAC addresses on a voice VLAN. the interface converts all the dynamic secure MAC addresses to sticky secure MAC addresses. dynamic port security is automatically enabled on the voice VLAN.sticky enables sticky learning. The sticky learning feature allows the addition of dynamically learned addresses to the running configuration. the switch can learn new addresses. + A secure port cannot be a destination port for Switched Port Analyzer (SPAN). + When you enable port security on an interface that is also configured with a voice VLAN.1Q tunnel ports. When dynamic MAC address learning is enabled on an interface. and all addresses seen on the access VLAN (to which the port belongs) are learned as sticky secure addresses.D Explanation: Follow these guidelines when configuring port security: + Port security can only be configured on static access ports. + A secure port cannot belong to a Fast EtherChannel or Gigabit EtherChannel port group. D. + A secure port cannot be a dynamic access port. or 802. The network administrator can configure static secure or sticky secure MAC addresses in the voice VLAN. all addresses seen on the voice VLAN are learned as dynamic secure addresses. + If any type of port security is enabled on the access VLAN. E. When entering this command. Answer: C. B. trunk ports. C. you must set the maximum allowed secure addresses on the port to at least two.(Topic 6) A network administrator needs to configure port security on a switch. The network administrator can apply port security to EtherChannels. Which two statements are true? (Choose two. Question No : 264 .) A. The network administrator can apply port security to dynamic access ports.

cisco.(Topic 6) Refer to exhibit.com/en/US/docs/switches/lan/catalyst3550/software/release/12.html) Question No : 265 .+ The protect and restrict options cannot be simultaneously enabled on an interface. (Reference: http://www. 223 .1_19_ea1 /configuration/guide/swtrafc.

The console password is missing. D. This will result in the “password required. Question No : 266 .(Topic 6) Refer to the exhibit. but not password.A network administrator cannot establish a Telnet session with the indicated router. The following commands are executed on interface fa0/1 of 2950Switch. 2950Switch(config-if)# switchport port-security 2950Switch(config-if)# switchport port-security mac-address sticky 224 . The vty password is missing. A Level 5 password is not set. C. but none set” message to users trying to telnet to this router. What is the cause of this failure? A. B. Answer: C Explanation: The login keyword has been set. An ACL is blocking Telnet access.

but sticky MAC addresses can be learned dynamically.2950Switch(config-if)# switchport port-security maximum 1 The Ethernet frame that is shown arrives on interface fa0/1. Port security with sticky MAC addresses retains dynamically learned MAC addresses during a link-down condition. B. the first learned MAC address of 2950Switch.) A. Only host A will be allowed to transmit frames on fa0/1. Answer: B. D.aaaa will be forwarded out fa0/1. Port security with sticky MAC addresses provides many of the same benefits as port security with static MAC addresses. Hosts B and C may forward frames out fa0/1 but frames arriving from other switches will not be forwarded out fa0/1. All frames arriving on 2950Switch with a destination of 0000. Only frames from source 0000.FFFF. F. The MAC address table will now have an additional entry of fa0/1 FFFF. This frame will be discarded when it is received by 2950Switch. E. the port does not forward ingress traffic that has source addresses outside the group of defined addresses.) A.D Explanation: The configuration shown here is an example of port security.bbbb. Question No : 267 . the device attached to that port has the full bandwidth of the port. SW1#show switchport port-secure interface FastEthernet 0/12 225 .00bb. What two functions will occur when this frame is received by 2950Switch? (Choose two. specifically port security using sticky addresses.FFFF. You can use port security with dynamically learned and static MAC addresses to restrict a port's ingress traffic by limiting the MAC addresses that are allowed to send traffic into the port. When you assign secure MAC addresses to a secure port. will be forwarded out fa0/1.(Topic 6) Which two commands correctly verify whether port security has been configured on port FastEthernet 0/12 on a switch? (Choose two. C. If you limit the number of secure MAC addresses to one and assign a single secure MAC address.00aa. SW1#show port-secure interface FastEthernet 0/12 B.

255.146. to allow traffic from hosts on networks 192.168. access-list 10 permit ip 192. An example of the output of “show port-security interface” command is shown below: Question No : 268 . 192. Which two ACL statements.148.0 0.255 D.1. access-list 10 permit ip 192. would you use to accomplish this task? (Choose two.D Explanation: We can verify whether port security has been configured by using the “show runningconfig” or “show port-security interface” for more detail.0.147. SW1#show running-config D. SW1#show switchport port-security interface FastEthernet 0/12 Answer: C. access-list 10 permit ip 192.168.149.168.255 226 .(Topic 6) A network administrator is configuring ACLs on a Cisco router. SW1#show port-security interface FastEthernet 0/12 E.0.168. access-list 10 permit ip 192. 192.0.255 B.149.0.255 C.0.255.) A.0.168.0 0.0 0. and 192.168.168.0.0 only.168.1.147.148.146.C. when combined.0 0.

0. An attempt to deny web access to a subnet blocks all traffic from the subnet.0 0. and “access-list 10 permit ip 192.(Topic 6) Refer to the exhibit.0 Answer: A.168.0 and 192. no ip access-class 102 in B. no ip access-group 102 in 227 .255” would allow only the 192. access-list 10 permit ip 192. Question No : 269 .0 networks.168.146.168.149.1.168.0 0.146.E.168.1.148.0 255.255.0 and 192.0 networks.148.255 F. access-list 10 permit ip 192. no ip access-class 102 out C.146.C Explanation: “access-list 10 permit ip 192.146.0.168.255.168.147.255” would allow only the 192. Which interface command immediately removes the effect of ACL 102? A.0 0.0.0.168.

enable the port security and set the maximum number of connections to 1. configure the interface mode as the access mode Second. we know that the ACL is applied to outbound traffic.(Topic 6) Which set of commands is recommended to prevent the use of a hub in the access layer? A. Question No : 271 . From the output shown.D. switch(config-if)#switchport mode access switch(config-if)#switchport port-security maximum 1 D. you should perform the following configurations in the interface mode: First. no ip access-group 102 out E. switch(config-if)#switchport mode access switch(config-if)#switchport port-security mac-address 1 Answer: C Explanation: This question is to examine the layer 2 security configuration. switch(config-if)#switchport mode trunk switch(config-if)#switchport port-security mac-address 1 C. no ip access-list 102 in Answer: D Explanation: The “ip access-group” is used to apply and ACL to an interface.(Topic 6) 228 . switch(config-if)#switchport mode trunk switch(config-if)#switchport port-security maximum 1 B. In order to satisfy the requirements of this question. Question No : 270 . so “no ip access-group 102 out” will remove the effect of this ACL.

Administratively shut down the interface. Moreover.1.168.(Topic 6) What can be done to secure the virtual terminal interfaces on a router? (Choose two. 229 .0. access-list 110 permit ip any any B.0. access-list 50 deny 192. access list 101 deny tcp any host 192. To apply an access list to a virtual terminal interface we must use the “access-class” command.255 C.1 eq 22 Answer: B Explanation: The standard access lists are ranged from 1 to 99 and from 1300 to 1999 so only access list 50 is a standard access list.168.1.Which item represents the standard IP ACL? A. Enter an access list and apply it to the virtual terminal interfaces using the access-class command.1 0. Create an access list and apply it to the virtual terminal interfaces with the access-group command. C.) A. Answer: D. The most simple way to secure the virtual terminal interface is to configure a username & password to prevent unauthorized login. The “access-group” command is only used to apply an access list to a physical interface -> C is not correct. someone can still access the virtual terminal interfaces via other interfaces -> We cannot physically secure a virtual interface because it is “virtual” ->. Physically secure the interface.1. Configure a virtual terminal password and login process. B. D. access-list 2500 deny tcp any host 192.E Explanation: It is a waste to administratively shut down the interface.168.1 D. Question No : 272 . E.

The task is to create and apply an access-list with no more than three statements that will allow ONLY host C web access to the Finance Web Server.) Answer: Question No : 274 CORRECT TEXT . all other traffic should be allowed. The user on host C should be able to use a web browser to access financial information from the Finance Web Server. All other traffic is permitted.(Topic 6) A network associate is adding security to the configuration of the Corp1 router. No other hosts will have web access to the Finance Web Server.Question No : 273 DRAG DROP . No other hosts from the LAN nor the Core should be able to use a web browser to access this server. Since there are multiple resources for the corporation at this location including other resources on the Finance Web Server. 230 .(Topic 6) Drag the security features on the left to the specific security risks they help protect against on the right. (Not all options are used.

The computers in the Hosts LAN have been assigned addresses of 192.33.17 172.23 eq 80 231 .22. All passwords have been temporarily set to "cisco".23) {destination addr} on port number 80 (web) Corp1(config)#access-list 100 deny tcp any host 172.168.168. The Finance Web Server is assigned an IP address of 172. The Core connection uses an IP address of 198.65.33.30.22.242.2 host C 192.23.168.242.3){source addr} to access finance server address (172.1 192.18.23) {destination addr} on port number 80 (web) Corp1(config)#access-list 100 permit tcp host 192.22.168.22.254 host A 192.33.168.168.3 host 172.168.33.242.196.1 host B 192.242.3 host D 192.242.22.168.23 eq 80 comment: To deny any source to access finance server address (172.242.33. Answer: Select the console on Corp1 router Configuring ACL Corp1>enable Corp1#configure terminal comment: To permit only Host C (192.22.33.242.33.Access to the router CLI can be gained by clicking on the appropriate host.22.33.4 The servers in the Server LAN have been assigned addresses of 172.

33. Check whether you configured correctly and in order. Corp1#copy running-config startup-config Verifying the Configuration: Step1: show ip interface brief command identifies the interface on which to apply access list. Question No : 275 . Corp1(config)#access-list 100 permit ip any any Applying the ACL on the Interface comment: Check show ip interface brief command to identify the interface type and number by checking the IP address configured.30 255.242.x (removes incorrect configured ipaddress and subnet mask) Configure Correct IP Address and subnet mask: ip address 172.22.242. B. This should be corrected in order ACL to work type this commands at interface mode : no ip address 192.22.255.22. Corp1(config-if)#ip access-group 100 out Corp1(config-if)#end Important: To save your running config to startup before exit.22.3) has access to the server.(Topic 6) Which statement about access lists that are applied to an interface is true? A.comment: To permit ip protocol from any source to access any destination because of the implicit deny any any statement at the end of ACL.x. C.242.x 255. B.x. Step2: Click on each host A.3) can access the Finance Web Server you can click on NEXT button to successfully submit the ACL SIM.x.168.30 ) Comment: Place the ACL to check for packets going outside the interface towards the finance web server.x. You can place as many access lists as you want on any interface.172.17 .168. 232 . Host opens a web browser page.23) to test whether it permits /deny access to the finance web Server. You can apply only one access list on any interface. Step 4: If only Host C (192.240 ( range of address specified going to server is given as 172.242. Corp1(config)#interface fa 0/1 If the ip address configured already is incorrect as well as the subnet mask. & D. Step 3: Only Host C (192. If the other host can also access then maybe something went wrong in your configuration.33.255. Select address box of the web browser and type the ip address of finance web server (172.

per direction.(Topic 6) When you are troubleshooting an ACL issue on a router. Answer: C Explanation: We can have only 1 access list per protocol. You can apply multiple access lists with the same protocol or in different directions. show ip access-lists B. which command would you use to verify which interfaces are affected by the ACL? A. Question No : 277 .(Topic 6) Refer to the exhibit. show access-lists C. You can configure one access list. per direction and per interface. It means: + We cannot have 2 inbound access lists on an interface + We can have 1 inbound and 1 outbound access list on an interface Question No : 276 . list ip interface Answer: D Explanation: Incorrect answer: show ip access-lists does not show interfaces affected by an ACL. per Layer 3 protocol. D. show ip interface E. 233 .C. show interface D.

Root Guard D. Then.(Topic 6) Which Cisco Catalyst feature automatically disables the port in an operational PortFast upon receipt of a BPDU? A.21. in this cast the two hosts in line C and D. B. BackboneFast B.Statements A. it it best to begin with the most specific entries first. BADC C. So. But as is. CDBA Answer: D Explanation: Routers go line by line through an access list until a match is found and then will not look any further. and D of ACL 10 have been entered in the shown order and applied to interface E0 inbound. Question No : 278 . UplinkFast C. to prevent all hosts (except those whose addresses are the first and last IP of subnet 172.128/28) from accessing the network. C. How can the ACL statements be re-arranged so that the system works as intended? A. BPDU Guard 234 . include the subnet (B) and then finally the rest of the traffic (A). the ACL does not restrict anyone from the network. even if a more specific of better match is found later on in the access list.1. DBAC D. ACDB B.

No other hosts will have web access to the Finance Web Server. 235 . when a PortFast receives a BPDU.(Topic 7) A network associate is adding security to the configuration of the Corp1 router. Topic 7. All other traffic is permitted. it will be shut down to prevent a loop. BPDU Filter Answer: D Explanation: We only enable PortFast feature on access ports (ports connected to end stations). No other hosts from the LAN nor the Core should be able to use a web browser to access this server.E. The task is to create and apply an access-list with no more than three statements that will allow ONLY host C web access to the Finance Web Server. But if someone does not know he can accidentally plug that port to another switch and a loop may occur when BPDUs are being transmitted and received on these ports. Infrastructure Management Question No : 279 CORRECT TEXT . The user on host C should be able to use a web browser to access financial information from the Finance Web Server. all other traffic should be allowed. With BPDU Guard. Since there are multiple resources for the corporation at this location including other resources on the Finance Web Server.

Access to the router CLI can be gained by clicking on the appropriate host. All passwords have been temporarily set to "cisco".168.1 host 172.26 eq www Corp1(config)# access-list 128 deny tcp any host 172.240.22.240.18.254 host A 192.168.26 eq www Corp1(config)# access-list 128 permit ip any any Corp1(config)#int fa0/1 Corp1(config-if)#ip access-group 128 out Corp1(config-if)#end Corp1#copy run startup-config Question No : 280 .168.240.240.240.168.1 192.1 host B 192.(Topic 7) 236 .2 host C 192.247.168.141.65 The computers in the Hosts LAN have been assigned addresses of 192.240.168.3 Answer: Corp1#conf t Corp1(config)# access-list 128 permit tcp host 192.141.22. The Core connection uses an IP address of 198.

Reference: http://searchenterprisewan. WCCP D. Netflow C. Services running on the device may also be affected. For example. WAN encapsulation Answer: A. SNMP version F. number of devices exporting Netflow data D. where Netflow data will be sent C.What are three factors a network administrator must consider before implementing Netflow in the network? (Choose three.techtarget. you may not want to send NetFlow data from a datacenter switch to a NetFlow collector on the other side of a small WAN circuit.com/tip/How-the-NetFlow-protocolmonitors-your-WAN Question No : 281 . IP SLA Answer: B 237 . port availability E. the traffic can be substantial.(Topic 7) What Cisco IOS feature can be enabled to pinpoint an application that is causing slow network performance? A. Cisco's performance testing seems to indicate that newer hardware can accommodate this load pretty well. Some symptoms of high CPU utilization are very large jitter and increased delay. Also bear in mind that the flows from aggregating large numbers of devices can add up. but you will still want to check it out before you turn on the feature.B. SNMP B.) A. Depending on how much traffic you have and how you configure it. Another thing to keep in mind is the amount of data you're going to be sending across the network. CPU utilization B.C Explanation: NetFlow has a reputation for increasing CPU utilization on your network devices.

You are required to troubleshoot and resolve OSPF neighbor adjacency issues between the main office and the routers located in the remote branch offices. 238 .(Topic 7) Scenario Refer to the topology. bandwidth hogs and bandwidth utilization quickly with command line interface or reporting tools.com/c/en/us/products/collateral/ios-nx-os-software/iosnetflow/prod_white_paper0900aecd80406232.html Question No : 282 .cisco.Explanation: Netflow can be used to diagnose slow network performance. Your company has decided to connect the main office with three other remote branch offices using point-to-point serial links. Reference: http://www.

239 .

240 .

241 .

An OSPF neighbor adjacency is not formed between R3 in the main office and R6 in the Branch3 office. The R3 router ID is configured on R6. the username is not configured on R3 and R6. C. There is an OSPF hello and dead interval mismatch. D. B. Answer: D Explanation: Using the show running-config command we see that R6 has been incorrectly configured with the same router ID as R3 under the router OSPF process. What is causing the problem? A. 242 . There is a PPP authentication issue. There is an area ID mismatch.

R2 and R3 are connected to the switches SW1 and SW2. respectively. SW1 and SW2 are also connected to the routers R4 and R5.Question No : 283 . Use the appropriate show commands to troubleshoot the issues. The EIGRP routing protocol is configured. R2. You are required to troubleshoot and resolve the EIGRP issues between the various routers. and R3 with serial links. Your company has connected the routers R1. 243 .(Topic 7) Scenario Refer to the topology.

244 .

245 .

246 .

247 .

D. Success rate is 0 percent (0/5) Why are the pings failing? A. C.5. timeout is 2 seconds: Packet sent with a source address of 10.1.5.5.1. The loopback interface is shut down on R5.1 Type escape sequence to abort. Answer: C Explanation: R5 does not have a route to the 10.1. The network statement is missing on R1.1. 100-byte ICMP Echos to 10. When looking at the EIGRP configuration on R1.1 network 248 .55 source 10.1. we see that the 10.1.5. The network statement is missing on R5.Study the following output taken on R1: R1# Ping 10.1. The IP address that is configured on the Lo1 interface on R5 is incorrect.55. which is the loopback0 IP address of R1.1. Sending 5.1 network.1 ……. B.

Question No : 284 .statement is missing on R1.(Topic 7) An administrator is trying to ping and telnet from SwitchC to RouterC with the results shown below. 249 .

250 .Click the console connected to RouterC and issue the appropriate commands to answer the questions.

251 .

252 .

253 .

What would be the effect of issuing the command ip access-group 115 in on the s0/0/1 interface? 254 .

4. Answer: A Explanation: First let’s see what was configured on interface S0/0/1: Question No : 285 . C. The following is the original NetFlow show command used for many years in Cisco IOS 255 . There are three methods to visualize the data depending on the version of Cisco IOS Software. The traditional show command for NetFlow is "show ip cache flow" also available are two forms of top talker commands. One of the top talkers commands uses a static configuration to view top talkers in the network and another command called dynamic top talkers allows real-time sorting and aggregation of NetFlow data. echo.(Topic 7) What command visualizes the general NetFlow data on the command line? A. B. Telnet and ping would work but routing updates would fail. show mls netflow ip Answer: C Explanation: The following is an example of how to visualize the NetFlow data using the CLI. D.0 network would pass through the interface.4. and www would work but telnet would fail. show ip flow export B. FTP. Only traffic from the 10. show ip cache flow D.A. FTP-DATA. show ip flow top-talkers C. Also shown is a show MLS command to view the hardware cache on the Cisco Catalyst 6500 Series Switch. No host could connect to RouterC through s0/0/1. show mls sampling E.

Software.com/c/en/us/products/collateral/ios-nx-os-software/iosnetflow/prod_white_paper0900aecd80406232. Information provided includes packet size distribution. basic statistics about number of flows and export timer setting. 256 . a view of the protocol distribution statistics and the NetFlow cache. The “show ip cache flow” command displays a summary of the NetFlow accounting statistics.html Question No : 286 .cisco.(Topic 7) Refer to the exhibit. 7-25 Reference: http://www.

(Topic 7) An administrator is trying to ping and telnet from SwitchC to RouterC with the results shown below. Based on the output shown. SW1's Fa0/1 interface is administratively shut down. what is the cause of the EtherChannel problem? A. There is an encapsulation mismatch between SW1's Fa0/1 and SW2's Fa0/1 interfaces. There is a speed mismatch between SW1's Fa0/1 and SW2's Fa0/1 interfaces. D.If the devices produced the given output. Question No : 287 . C. SW1 is configured to run at 10Mb while SW2 is operating at 100 Mb. B. Answer: D Explanation: You must configure all interfaces in an EtherChannel to operate at the same speeds and duplex modes. There is an MTU mismatch between SW1's Fa0/1 and SW2's Fa0/1 interfaces. 257 .

Click the console connected to RouterC and issue the appropriate commands to answer the questions. 258 .

259 .

260 .

261 .

What would be the effect of issuing the command ip access-group 114 in to the fa0/0 interface? 262 .

F.0/24 network Question No : 288 .A. D. Interface S0/0 on RouterA is configured with an incorrect subnet mask. The encapsulation that is configured on S0/0 of RouterB does not match the encapsulation that is configured on S0/0 of RouterA.4. Hosts in network 192.0 network. Based on the output from RouterA.0.4.0.3. It would allow all traffic from the 10. Attempts to telnet to the router would fail.168.2. The IP address that is configured on S0/0 of RouterB is not in the correct subnet.4.0 network would not be accepted from the fa0/0 interface. C. Routing protocol updates for the 10.4. D. Interface S0/0 on RouterA is not receiving a clock signal from the CSU/DSU.0.(Topic 7) Refer to the exhibit.4. what are two possible reasons for the failure? (Choose two.) A. The cable that is connected to S0/0 on RouterA is faulty. 263 .4.255 any we can easily understand that this access list allows all traffic (ip) from 10. Interface S0/0 on RouterB is administratively down.168.0 are unable to reach hosts in network 192. E. B. C.4. B.0 0. IP traffic would be passed through the interface but TCP and UDP traffic would not.4. Answer: B Explanation: From the output of access-list 114: access-list 114 permit ip 10.

Question No : 289 DRAG DROP .F Explanation: From the output we can see that there is a problem with the Serial 0/0 interface. There could be a result of mismatched encapsulation or the interface not receiving a clock signal from the CSU/DSU.Answer: E.(Topic 7) A user is unable to connect to the Internet. but the line protocol is down. Based on the layered approach to troubleshooting and beginning with the lowest layer. Answer: Explanation: 264 . drag each procedure on the left to its proper category on the right. It is enabled.

com to assure that the far end server is not down (it sometimes make we think we can’t access to the Internet). 265 . We are using a URL so this step belongs to layer 7 of the OSI model. Question No : 290 . “verify Ethernet cable connection” means that we check if the type of connection (crossover.com.(Topic 7) Refer to the exhibit. We do this by simply making a ping to the loopback interface 127. the PC’s IP is in the same network with the gateway… Verifying the URL by typing in your browser some popular websites like google. checking if the IP can be assignable for host.0.1.0. rollover…) is correct. the signal on the cable is acceptable… Next we “verify NIC operation”. straight-through.The question asks us to “begin with the lowest layer” so we have to begin with Layer 1: verify physical connection. Verify IP configuration belongs to layer 3. in this case an Ethernet cable connection. microsoft. For example. 2) and TCP/IP stack (layer 3) are working properly. the RJ45 headers are plugged in. If it works then the NIC card (layer 1. For your information.

The EIGRP routing protocol is configured.168. You are required to troubleshoot and resolve the EIGRP issues between the various routers.1.63 For the network 192. B. what is the cause of this problem? A. 266 .1.168. SW1 and SW2 are also connected to the routers R4 and R5. D.168.1. Your company has connected the routers R1. C. Question No : 291 .1.(Topic 7) Scenario Refer to the topology. Use the appropriate show commands to troubleshoot the issues.168.62/27: Increment: 32 Network address: 192. The Fa0/0 interface on RouterA is on a subnet that can't be used. Assuming routing is properly configured. and R3 with serial links. R2 and R3 are connected to the switches SW1 and SW2.32 Broadcast address: 192.168. R2. The Fa0/0 interface on RouterB is using a broadcast address. respectively.64 Broadcast address: 192. E. Answer: D Explanation: Now let’s find out the range of the networks on serial link: For the network 192. The address of SwitchA is a subnet address.65/27: Increment: 32 Network address: 192.95 -> These two IP addresses don’t belong to the same network and they can’t see each other.HostA cannot ping HostB.1. HostA is not on the same subnet as its default gateway.168.1. The serial interfaces of the routers are not on the same subnet.

267 .

268 .

269 .

270 .

we see that R4 is configured for EIGRP AS 2. 271 . The interfaces are shutdown. so they are not being advertised. D.Authentication method and key strings Here. so only the 10. 10. so it does not peer with R5.The loopback interfaces on R4 with the IP addresses of 10. when it should be AS 1. Why are the interfaces missing? A.6/32 are not appearing in the routing table of R5.0 network is displayed. The loopback addresses haven't been advertised.4. C.4.4/32. the following must match: . Automatic summarization is enabled.5/32.4. and 10.Neighbors must be in the same subnet . R4 has been incorrectly configured to be in another AS. B.0. Answer: B Explanation: For an EIGRP neighbor to form.4. and the network command is missing on R4.AS numbers .4.0.4.K values .

after broken links are re-established C.(Topic 7) In which circumstance are multiple copies of the same unicast frame likely to be transmitted in a switched LAN? A.Question No : 292 . in an improperly implemented redundant topology E. when a dual ring topology is in use Answer: D Explanation: If we connect two switches via 2 or more links and do not enable STP on these switches then a loop (which creates multiple copies of the same unicast frame) will occur. when upper-layer protocols require high reliability D. during high traffic periods B. It is an example of an improperly implemented redundant topology. 272 .

1. please note the following. The password to allow telnet access to the router is xxx 5. IP information 273 . Interfaces should be enabled. Configure the router per the following requirements: Name of the router is R2 Enable.201.(Topic 7) Central Florida Widgets recently installed a new router in their office.Question No : 293 CORRECT TEXT . secret password is cisco The password to access user EXEC mode using the console is cisco2 The password to allow telnet access to the router is cisco3 IPV4 addresses must be configured as follows: Ethernet network 209. Password In access user EXEC mode using the console is xxx 4.router has last assignable host address in the subnet.0. Complete the network installation by performing the initial router configurations and configuring R1PV2 routing using the router command line interface (CLI) on the RC.0/27 .176/28 .router has fourth assignable host address in subnet Serial network is 192.2. Name or the router is xxx 2. secret password is xxx 3. Enable. the actual information will prevail.165. Router protocol is RIPV2 Attention: In practical examinations.

You are required to troubleshoot and resolve the EIGRP issues between the various routers.255. respectively. 274 . Use the appropriate show commands to troubleshoot the issues.(Topic 7) Scenario Refer to the topology.201.165.255.0.2. SW1 and SW2 are also connected to the routers R4 and R5.240 R2(config-if)#no shutdown R2(config-if)#exit R2(config)#router rip R2(config-router)#version 2 R2(config-router)#network 209.176 R2(config-router)#end R2#copy run start Question No : 294 . Your company has connected the routers R1.165. The EIGRP routing protocol is configured. R2 and R3 are connected to the switches SW1 and SW2.255.201.190 255.224 R2(config)#interface s0/0/0 R2(config-if)#ip address 192.255. R2.4 255.0.2.Answer: Router>enable Router#config terminal Router(config)#hostname R2 R2(config)#enable secret Cisco 1 R2(config)#line console 0 R2(config-line)#password Cisco 2 R2(config-line)#exit R2(config)#line vty 0 4 R2(config-line)#password Cisco 3 R2(config-line)#login R2(config-line)#exit R2(config)#interface faO/0 R2(config-if)#ip address 209.0 R2(config-router)#network 192. and R3 with serial links.

275 .

276 .

277 .

278 .

The network command is missing.Router R6 does not form an EIGRP neighbor relationship correctly with router R1. The K values mismatch. The passive interface command is enabled. C. B. The AS does not match. Answer: C Explanation: The link from R1 to R6 is shown below: 279 . What is the cause for this misconfiguration? A. D.

0 network: 280 .168. The IP addresses are in the 192. they are both using e0/0.16.As you can see.

But when we look at the EIGRP configuration. Question No : 295 . destination IP address F. IP next-hop Answer: A. ingress interface E.0” command is missing on R6.(Topic 7) What are three values that must be the same within a sequence of packets for Netflow to consider them a network flow? (Choose three.168.D. These attributes are the IP packet identity or fingerprint of the packet and 281 .E Explanation: Each packet that is forwarded within a router or switch is examined for a set of IP packet attributes. egress interface D. source MAC address C. the “network 192. source IP address B.16.) A.

IP Packet attributes used by NetFlow: • IP source address • IP destination address • Source port • Destination port • Layer 3 protocol type • Class of Service • Router or switch interface All packets with the same source/destination IP address. Reference: http://www. source/destination ports.html Question No : 296 . This methodology of fingerprinting or determining a flow is scalable because a large amount of network information is condensed into a database of NetFlow information called the NetFlow cache.com/c/en/us/products/collateral/ios-nx-os-software/iosnetflow/prod_white_paper0900aecd80406232. protocol interface and class of service are grouped into a flow and then packets and bytes are tallied.cisco. an IP Flow is based on a set of 5 and up to 7 IP packet attributes. Traditionally.determine if the packet is unique or similar to other packets. It is suspected that the cable connected to switch port Fa0/9 on Switch1 is disconnected. A problem with network connectivity has been observed.(Topic 7) Refer to the exhibit. What would be an effect of this 282 .

Answer: D Explanation: Spanning-Tree Protocol (STP) is a Layer 2 protocol that utilizes a special-purpose algorithm to discover physical loops in a network and effect a logical loop-free topology. WCCP C. IP SLA D. unless otherwise indicated. Netflow B. For less than a minute. STP creates a loop-free tree structure consisting of leaves and branches that span the entire Layer 2 network. connections between switches are assumed to be trunks.cable being disconnected? A. The transfer of files from Host B to the server in VLAN9 would be significantly slower. messages like this might appear in the router console: %SNMP-3-CPUHOG: Processing [chars] of [chars] They mean that the SNMP agent on the device has taken too much time to process a request. Note that the terms bridge and switch are used interchangeably when discussing STP. SNMP Answer: D Explanation: Sometimes. B. C.(Topic 7) Which protocol can cause overload on a CPU of a managed device? A. In addition. You can determine the cause of high CPU use in a router by using the output of the show 283 . Host B would not be able to access the server in VLAN9. Then normal network function would resume. Host B would not be able to access the server in VLAN9 until the cable is reconnected. Communication between VLAN3 and the other VLANs would be disabled. The actual mechanics of how bridges communicate and how the STP algorithm works will be discussed at length in the following topics. D. Question No : 297 .

Answer: C Explanation: Host1 tries to communicate with Host2. Question No : 298 . According to the topology. What is the problem? A. The link between Host1 and Switch1 is down. switches. Interface Fa0/0 on Router1 is shutdown. The default gateway on Host1 is incorrect. The link between Router1 and Router2 is down.process cpu command.(Topic 7) Refer to the exhibit. F. printers…). servers. D. we can infer that the link between Router1 and Router2 is down. workstations. 284 . E. The message destination host unreachable from Router1 indicates that the problem occurs when the data is forwarded from Host1 to Host2. A network administrator attempts to ping Host2 from Host1 and receives the results that are shown. Note: A managed device is a part of the network that requires some form of monitoring and management (routers. TCP/IP is not functioning on Host1 C. B. The link between Switch1 and Router1 is down.

network layer Answer: E Explanation: The command ping uses ICMP protocol.(Topic 7) Refer to the exhibit. Your company has decided to connect the main office with three 285 . At which OSI layer is the problem? A. so it works at the network layer.10.(Topic 7) Scenario: Refer to the topology.10. An administrator pings the default gateway at 10. data link layer B. application layer C. The command ping is often used to verify the network connectivity. which is a network layer protocol used to propagate control message between host and router. Question No : 300 .Question No : 299 .1 and sees the output as shown. session layer E. access layer D.

286 . You are required to troubleshoot and resolve OSPF neighbor adjacency issues between the main office and the routers located in the remote branch offices.other remote branch offices using point-to-point serial links.

287 .

288 .

R1 ethernet0/1 is shutdown. Configure no shutdown command. R2 ethernet0/1 and R3 ethernet0/0 are configured with a non-default OSPF hello 289 . B. configure no ip ospf hello-interval 25. C. R1 ethernet0/1 configured with a non-default OSPF hello interval of 25. Which option would fix the issue? A.R1 does not form an OSPF neighbor adjacency with R2.

interval of 25; configure no ip ospf hello-interval 25.
D. Enable OSPF for R1 ethernet0/1; configure ip ospf 1 area 0 command under
ethernet0/1.
Answer: B
Explanation:
Looking at the configuration of R1, we see that R1 is configured with a hello interval of 25
on interface Ethernet 0/1 while R2 is left with the default of 10 (not configured).

Question No : 301 - (Topic 7)
What are the benefits of using Netflow? (Choose three.)
A. Network, Application & User Monitoring
B. Network Planning
C. Security Analysis
D. Accounting/Billing
Answer: A,C,D
Explanation:

290

NetFlow traditionally enables several key customer applications including:
+ Network Monitoring – NetFlow data enables extensive near real time network monitoring
capabilities. Flow-based analysis techniques may be utilized to visualize traffic patterns
associated with individual routers and switches as well as on a network-wide basis
(providing aggregate traffic or application based views) to provide proactive problem
detection, efficient troubleshooting, and rapid problem resolution.
+ Application Monitoring and Profiling – NetFlow data enables network managers to gain a
detailed, time-based, view of application usage over the network. This information is used
to plan, understand new services, and allocate network and application resources (e.g.
Web server sizing and VoIP deployment) to responsively meet customer demands.
+ User Monitoring and Profiling – NetFlow data enables network engineers to gain detailed
understanding of customer/user utilization of network and application resources. This
information may then be utilized to efficiently plan and allocate access, backbone and
application resources as well as to detect and resolve potential security and policy
violations.
+ Network Planning – NetFlow can be used to capture data over a long period of time
producing the opportunity to track and anticipate network growth and plan upgrades to
increase the number of routing devices, ports, or higher- bandwidth interfaces. NetFlow
services data optimizes network planning including peering, backbone upgrade planning,
and routing policy planning. NetFlow helps to minimize the total cost of network operations
while maximizing network performance, capacity, and reliability. NetFlow detects unwanted
WAN traffic, validates bandwidth and Quality of Service (QOS) and allows the analysis of
new network applications. NetFlow will give you valuable information to reduce the cost of
operating your network.
+ Security Analysis – NetFlow identifies and classifies DDOS attacks, viruses and worms in
real-time. Changes in network behavior indicate anomalies that are clearly demonstrated in
NetFlow data. The data is also a valuable forensic tool to understand and replay the history
of security incidents.
+ Accounting/Billing – NetFlow data provides fine-grained metering (e.g. flow data includes
details such as IP addresses, packet and byte counts, timestamps, type-of-service and
application ports, etc.) for highly flexible and detailed resource utilization accounting.
Service providers may utilize the information for billing based on time-of-day, bandwidth
usage, application usage, quality of service, etc. Enterprise customers may utilize the

291

information for departmental charge-back or cost allocation for resource utilization.

Question No : 302 - (Topic 7)
Refer to the exhibit.

The two connected ports on the switch are not turning orange or green. What would be the
most effective steps to troubleshoot this physical layer problem? (Choose three.)
A. Ensure that the Ethernet encapsulations match on the interconnected router and switch
ports.
B. Ensure that cables A and B are straight-through cables.
C. Ensure cable A is plugged into a trunk port.
D. Ensure the switch has power.
E. Reboot all of the devices.
F. Reseat all cables.
Answer: B,D,F
Explanation:

292

The ports on the switch are not up indicating it is a layer 1 (physical) problem so we should
check cable type, power and how they are plugged in.

Question No : 303 CORRECT TEXT - (Topic 7)
CCNA.com has a small network that is using EIGRP as its IGP. All routers should be
running an EIGRP AS number of 12. Router MGT is also running static routing to the ISP.
CCNA.com has recently added the ENG router. Currently, the ENG router does not have
connectivity to the ISP router. All over interconnectivity and Internet access for the existing
locations of the company are working properly.
The task is to identify the fault(s) and correct the router configuration(s) to provide full
connectivity between the routers.
Access to the router CLI can be gained by clicking on the appropriate host.
All passwords on all routers are cisco.
IP addresses are listed in the chart below.
MGT
Fa0/0 – 192.168.77.33
S1/0 – 198.0.18.6
S0/0 – 192.168.27.9
S0/1 – 192.168.50.21
ENG
Fa0/0 – 192.168.77.34
Fa1/0 – 192.168.12.17
Fa0/1 – 192.168.12.1
Parts1
293

Fa0/0 – 192.168.12.33
Fa0/1 – 192.168.12.49
S0/0 – 192.168.27.10
Parts2
Fa0/0 – 192.168.12.65
Fa0/1 – 192.168.12.81
S0/1 – 192.168.50.22

294

Answer: On the MGT Router:
Config t
Router eigrp 12
Network 192.168.77.0

Question No : 304 DRAG DROP - (Topic 7)
Drag each category on the left to its corresponding router output line on the right. Each
router output line is the result of a show ip interface command. Not all categories are
used.

Answer:

Explanation:

295

A simple way to find out which layer is having problem is to remember this rule: “the first
statement is for Layer 1, the last statement is for Layer 2 and if Layer 1 is down then surely
Layer 2 will be down too”, so you have to check Layer 1 before checking Layer 2. For
example, from the output “Serial0/1 is up, line protocol is down” we know that it is a layer 2
problem because the first statement (Serial0/1 is up) is good while the last statement (line
protocol is down) is bad. For the statement “Serial0/1 is down, line protocol is down”, both
layers are down so the problem belongs to Layer 1.
There is only one special case with the statement “…. is administrator down, line protocol is
down”. In this case, we know that the port is currently disabled and shut down by the
administrators.

Question No : 305 - (Topic 7)
Scenario:
Refer to the topology. Your company has decided to connect the main office with three
other remote branch offices using point-to-point serial links.
You are required to troubleshoot and resolve OSPF neighbor adjacency issues between
the main office and the routers located in the remote branch offices.

296

297 .

298 .

299 .

D. Answer: A Explanation: A show running-config command on R3 and R4 shows that R4 is incorrectly configured for area 2: 300 . an encapsulation mismatch on serial links. C. There is an OSPF hello and dead interval mismatch. B. The R3 router ID is configured on R4. What is causing the problem? A. There is a Layer 2 issue. There is an area ID mismatch.An OSPF neighbor adjacency is not formed between R3 in the main office and R4 in the Branch1 office.

-> A is correct. + Reduction in peak WAN traffic Use NetFlow statistics to measure WAN traffic improvement from application-policy changes. To diagnose slow network performance. 301 .F Explanation: NetFlow facilitates solutions to many common problems encountered by IT professionals. + Troubleshooting and understanding network pain points Diagnose slow network performance. -> D is correct.or under-subscribed. To detect suboptimal routing in the network.D. + Validation of QoS parameters Confirm that appropriate bandwidth has been allocated to each Class of Service (CoS) and that no CoS is over. bandwidth hogs and bandwidth utilization quickly with command line interface or reporting tools. D. To authorize user network access.Question No : 306 . B. To confirm the appropriate amount of bandwidth that has been allocated to each Class of Service. C. + Analyze new applications and their network impact Identify new application network loads such as VoIP or remote site additions.-> F is correct. bandwidth hogs. F. + Detection of unauthorized WAN traffic Avoid costly upgrades by identifying the applications causing congestion. understand who is utilizing the network and the network top talkers. Answer: A. and bandwidth utilization.) A. + Security and anomaly detection NetFlow can be used for anomaly detection and worm diagnosis along with applications such as Cisco CS-Mars. To identify applications causing congestion. To report and alert link up / down instances. E.(Topic 7) What are three reasons to collect Netflow data on a company network? (Choose three.

302 .(Topic 7) An administrator is trying to ping and telnet from SwitchC to RouterC with the results shown below.Question No : 307 . Click the console connected to RouterC and issue the appropriate commands to answer the questions.

303 .

304 .

305 .

Correctly assign an IP address to interface fa0/1. 306 .Which will fix the issue and allow ONLY ping to work while keeping telnet disabled? A.

Answer: E Explanation: Let’s have a look at the access list 104: The question does not ask about ftp traffic so we don’t care about the two first lines.B. Remove access-group 102 out from interface s0/0/0 and add access-group 114 in E. Change the ip access-group command on fa0/0 from “in” to “out”.C.D Explanation: 307 . L3 protocol type E. Question No : 308 . C. D. IP address B. Remove access-group 106 in from interface fa0/0 and add access-group 104 in. Interface name C. Port numbers D.(Topic 7) What are the three things that the Netflow uses to consider the traffic to be in a same flow? (Choose three) A. The 3rd line denies all telnet traffic and the 4th line allows icmp traffic to be sent (ping). Remember that the access list 104 is applied on the inbound direction so the 5th line “access-list 104 deny icmp any any echo-reply” will not affect our icmp traffic because the “echo-reply” message will be sent over the outbound direction. MAC address Answer: A. Remove access-group 106 in from interface fa0/0 and add access-group 115 in.

These attributes are the IP packet identity or fingerprint of the packet and determine if the packet is unique or similar to other packets. Configuration information: router name – Weaver inside global addresses – 198. no routing protocol will be required) All passwords have been temporarily set to “cisco”.100.168. The appropriate static routes have also been configured (since the company will be a stub network. Traditionally.100. an IP Flow is based on a set of 5 and up to 7 IP packet attributes. Functionality can be tested by clicking on the host provided for testing.17 – 192.168.110/29 inside local addresses . The task is to complete the NAT configuration using all IP addresses assigned by the ISP to provide Internet access for the hosts in the Weaver LAN.105 .18.30/28 number of inside hosts – 14 308 .198. IP Packet attributes used by NetFlow: + IP source address + IP destination address + Source port + Destination port + Layer 3 protocol type + Class of Service + Router or switch interface Question No : 309 CORRECT TEXT .184.(Topic 7) The following have already been configured on the router: The basic router configuration The appropriate interfaces have been configured for NAT inside and NAT outside.What is an IP Flow? Each packet that is forwarded within a router or switch is examined for a set of IP packet attributes.192.184.18.

168.105 198. into an address from the pool named mypool (the pool contains addresses from 198.184.18.105 to 198.18. Overload keyword allows to map multiple IP addresses to a single registered IP address 309 .168.17 – 192.184.30.184.17 to 192.184. specifying the access list that was defined in the prior step.105 198.A network associate is configuring a router for the weaver company to provide internet access.30.110. Weaver(config)#ip nat pool mypool 198.168.105 to 198.248 Create a standard access control list that permits the addresses that are to be translated. The company has 14 hosts that need to access the internet simultaneously.15 Establish dynamic source translation.16 0.184.100.255.184.168.0.184. The ISP has provided the company six public IP addresses of 198.18.100. which means a source address from 192.110/29.0.110 netmask 255.100.18.184. The hosts in the company LAN have been assigned private space addresses in the range of 192.255.100.100. Weaver(config)#ip nat inside source list 1 pool mypool overload This command translates all source addresses that pass access list 1. Answer: The company has 14 hosts that need to access the internet simultaneously but we just have 6 public IP addresses from 198.18.168. Weaver(config)#access-list 1 permit 192.18. Therefore we have to use NAT overload (or PAT) Double click on the Weaver router to open it Router>enable Router#configure terminal First you should change the router's name to Weaver Router(config)#hostname Weaver Create a NAT pool of global addresses to be allocated with their netmask.110).18.18.

(Topic 7) A network administrator is troubleshooting the OSPF configuration of routers R1 and R2. what is the cause of this problem? A.0.(many-to-one) by using different ports. The cost on R1 should be set higher. Based on the information in the graphic. The graphic shows the output of the show ip ospf interface e0 command for routers R1 and R2. 310 . This is how to configure the NAT inside and NAT outside. B.2. The routers cannot establish an adjacency relationship on their common Ethernet link. The OSPF area is not configured properly. we should save all your work with the following command: Weaver#copy running-config startup-config Check your configuration by going to "Host for testing" and type: C :\>ping 192.0. just for your understanding: Weaver(config)#interface fa0/0 Weaver(config-if)#ip nat inside Weaver(config-if)#exit Weaver(config)#interface s0/0 Weaver(config-if)#ip nat outside Weaver(config-if)#end Finally. The priority on R1 should be set higher.2. C. The question said that appropriate interfaces have been configured for NAT inside and NAT outside statements.114 Question No : 310 .114 The ping should work well and you will be replied from 192.

not IOS. Answer: D Explanation: In OSPF. Your company has decided to connect the main office with three other remote branch offices using point-to-point serial links. 311 . ping B. The dead interval is also set to 20 on R1 but it is 40 on R2.(Topic 7) Scenario Refer to the topology.(Topic 7) Which router IOS commands can be used to troubleshoot LAN connectivity problems? (Choose three.F Explanation: Ping.D. ipconfig D. show ip route E. the hello and dead intervals must match and here we can see the hello interval is set to 5 on R1 and 10 on R2. F. E. ipconfig. The OSPF process ID numbers must match. Question No : 312 . and winipcfg are PC commands. winipcfg F.D. show ip route. tracert C.) A. show interfaces Answer: A. The hello and dead timers are not configured properly. A backup designated router needs to be added to the network. Tracert. Question No : 311 . and show interfaces are all valid troubleshooting IOS commands.

312 .You are required to troubleshoot and resolve OSPF neighbor adjacency issues between the main office and the routers located in the remote branch offices.

313 .

314 .

There is an area ID mismatch. There is a PPP authentication issue. What is causing the problem? A. C.An OSPF neighbor adjacency is not formed between R3 in the main office and R5 in the Branch2 office. There is an OSPF hello and dead interval mismatch. 315 . B. a password mismatch.

Flow monitors consist of a record and a cache.(Topic 7) What Netflow component can be applied to an interface to track IPv4 traffic? A. flow exporter Answer: A Explanation: Flow monitors are the Flexible NetFlow component that is applied to interfaces to perform network traffic monitoring. Answer: C Explanation: The “show ip ospf interface command on R3 and R5 shows that the hello and dead intervals do not match. flow record C. flow monitor B. Flow data is collected from the network traffic during the monitoring process based on the key and nonkey fields in the record. Question No : 313 . You add the record to the flow monitor after you create the flow monitor.D. There is a missing network command in the OSPF process on R5. They are 50 and 200 on R3 and 10 and 40 on R5. flow sampler D. The flow monitor cache is automatically created at the time the flow monitor is applied to the first interface. which is configured for the flow monitor and stored in the flow 316 .

You are required to troubleshoot and resolve the EIGRP issues between the various routers. and R3 with serial links.(Topic 7) Scenario Refer to the topology. The EIGRP routing protocol is configured. 317 . R2. For example. SW1 and SW2 are also connected to the routers R4 and R5. respectively. the following example creates a flow monitor named FLOW-MONITOR-1 and enters Flexible NetFlow flow monitor configuration mode: Router(config)# flow monitor FLOW-MONITOR-1 Router(config-flow-monitor)# Question No : 314 . Use the appropriate show commands to troubleshoot the issues. Your company has connected the routers R1.monitor cache. R2 and R3 are connected to the switches SW1 and SW2.

318 .

319 .

320 .

The traffic is unequally load-balanced over R2 and R3. The traffic goes through R2. D. C. 321 . The traffic is equally load-balanced over R2 and R3. B. The traffic goes through R3.Which path does traffic take from R1 to R5? A.

using the “show ip route” command on R1 we can see that to reach 10. which we see from the diagram is the link to R2.(Topic 7) Refer to the exhibit.5. Which of the following will correct the problems? (Choose two. Question No : 315 .5 and 10.) 322 . The network shown in the diagram is experiencing connectivity problems. Then.55 the preferred path is via Serial 1/3.5.Answer: A Explanation: Using the “show ip int brief command” on R5 we can see the IP addresses assigned to this router.5.5.

Configure the masks on both hosts to be 255.1.1.1.2.0 Topic 8.255. B. E.2.2. F.255.255.12 Mask : 255.1. They are usually faster than cable and DSL connections.X Mask : 255.(Topic 8) What are three characteristics of satellite Internet connections? (Choose three.1.254/24 VLAN2 It is obvious that the configurations of the gateways of members in VLAN2 and the associated network segments are wrong. The layer3 addressing information of Host B should be modified as follows: Address : 10.) A.1. The IP information of member Host A in VLAN1 is as follows: Address : 10.D Explanation: The switch 1 is configured with two VLANs: VLAN1 and VLAN2. Configure the gateway on Host B as 10.255.2 -.1.0 Gateway : 10.1.1.2. Their upload speed is about 10 percent of their download speed.2.254.1.255.1.255.1 -.10.255. They are frequently used by rural users without access to other high-speed connections.A.1. 323 .255.1.1.255. Configure the IP address of Host A as 10.126 Mask : 255.2.1.240.254 The configuration of sub-interface on router 2 is as follows: Fa0/0.10. Mixed Questions Question No : 316 .254/24 VLAN1 Fa0/0. Answer: B. B. D. C.0 Gateway : 10.2. Configure the gateway on Host A as 10. C. D. They are usually at least 10 times faster than analog modem connections.255.1.1. Configure the IP address of Host B as 10.224.254 The IP information of member Host B in VLAN2 is as follows: Address : 10.1. Configure the masks on both hosts to be 255.

They use radio waves to communicate with cellular phone towers.B.(Topic 8) A corporation wants to add security to its network. Access to the router CLI can be gained by clicking on the appropriate host.209. The Core connection uses an IP address of 198.C Question No : 317 CORRECT TEXT .168.168.22.65.1 – 192.168.78.78. All passwords have been temporarily set to “cisco”.1 host B 192. The requirements are: Host C should be able to use a web browser (HTTP) to access the Finance Web Server. Other types of access from host C to the Finance Web Server should be blocked.4 The Finance Web Server has been assigned an address of 172. They require a WiMax tower within 30 miles of the user location.146. This access list can contain no more than three statements that meet these requirements. You have been tasked to create and apply a numbered access list to a single outbound interface.78.168.18. All access from hosts in the Core or local LAN to the Finance Web Server should be blocked. host A 192. F.3 host D 192. The computers in the Hosts LAN have been assigned addresses of 192.254. Answer: A. All hosts in the Core and on local LAN should be able to access the Public Web Server.78.168.E.168.78.17. The Public Web Server in the Server LAN has been assigned an address of 172.2 host C 192.18.22. 324 .78.146.

325 .

326 .

24.png 327 .Answer: Please see below explanation part for details answer steps: Explanation: We should create an access-list and apply it to the interface that is connected to the Server LAN because it can filter out traffic from both S2 and Core networks. To see which interface this is.34 PM. use the “show ip int brief” command: Macintosh HD:Users:danielkeller:Desktop:Screen Shot 2015-11-17 at 3.

168125.From this. save the configuration Corp1(config-if)#end Corp1#copy running-config startup-config 328 .109.18 any Finally. we know that the servers are located on the fa0/1 interface.17 Our last instruction is to allow all hosts in the Core and on the local LAN access to the Public Web Server (172. Then.18) Corp1(config)#access-list 100 permit ip host 172.109. blocking all other access to the finance web server: Corp1(config)#access-list 100 deny ip any host 172.17 to check if you are allowed to access Finance Web Server or not. B and D) and check to make sure you can’t access Finance Web Server from these hosts.22.22.18. In the address box type http://172. Click on other hosts (A.22.22. To verify. Corp1#configure terminal Our access-list needs to allow host C – 192.109.125. If your configuration is correct then you can access it.17 via HTTP (port 80).168. our next two instructions are these: Other types of access from host C to the Finance Web Server should be blocked.109.17 eq 80 Then.109.22. apply this access-list to Fa0/1 interface (outbound direction) Corp1(config)#interface fa0/1 Corp1(config-if)#ip access-group 100 out Notice: We have to apply the access-list to Fa0/1 interface (not Fa0/0 interface) so that the access-list can filter traffic coming from both the LAN and the Core networks.3 to the Finance Web Server 172.22.3 host 172.109. so our first line is this: Corp1(config)#access-list 100 permit tcp host 192. repeat to make sure they can reach the public server at 172. All access from hosts in the Core or local LAN to the Finance Web Server should be blocked. just click on host C to open its web browser.22. so we will place our numbered access list here in the outbound direction. This can be accomplished with one command (which we need to do as our ACL needs to be no more than 3 lines long). Finally.109.

C. no password is required for telnet access. Which two statements are true about the loopback address that is configured on RouterB? (Choose two. IPv6 stateless autoconfiguration B.(Topic 8) Refer to the exhibit.Question No : 318 .(Topic 8) Which two features can dynamically assign IPv6 addresses? (Choose two.(Topic 8) Refer to the exhibit.) A.) 329 . Telnet access requires a new password. B. What is the result of setting the no login command? A. Telnet access is denied.B Question No : 320 . ISATAP tunneling Answer: A. IPv6 stateful autoconfiguration E. DHCP C. Telnet access requires a new password at the first login. Answer: D Question No : 319 . NHRP D. D.

It decreases the metric for routes that are advertised from RouterB. It ensures that data will be forwarded by RouterB. B. E.+ If a loopback interface is not defined. Answer: B. D. It indicates that RouterB should be elected the DR for the LAN. the highest IP address of all active router’s physical interfaces will be chosen.A. -> The loopback interface will be chosen as the router ID of RouterB – 330 .0.0.C Explanation: Explanation A loopback interface never comes down even if the link is broken so it provides stability for the OSPF process (for example we use that loopback interface as the router-id) The router-ID is chosen in the order below: + The highest IP address assigned to a loopback (logical) interface. C. It provides stability for the OSPF process on RouterB.1. It specifies that the router ID for RouterB should be 10.

Auxiliary C.Question No : 321 . Console Answer: A Question No : 322 . Define public and private IP addresses. Answer: A Question No : 323 . C. B.(Topic 8) Refer to the exhibit.(Topic 8) What is the first step in the NAT configuration process? A. SSH D. Define IP address pools. Define inside and outside interfaces. D.) 331 . Define global and local interfaces. Which user-mode password has just been set? A. Telnet B.(Topic 8) In which three ways is an IPv6 header simpler than an IPv4 header? (Choose three.

IPv6 headers have a fixed length. enable a TFTP server D. logging host ip-address C. Answer: A. no logging console B. E. IPv6 headers eliminate the IPv4 Checksum field. and IPv4 headers use an 8-bit TTL field. can enable debug output to a remote location? (Choose two) A.(Topic 8) Which command can you enter to set the default route for all traffic to an interface? 332 . locate an IOS image for booting C. terminal monitor D.C Question No : 324 . IPv6 headers use a 4-bit TTL field. show logging | redirect flashioutput.A. used in troubleshooting. set the configuration register Answer: A Question No : 325 . IPv6 headers use a smaller Option field size than IPv4 headers. C.(Topic 8) Which two Cisco IOS commands. snmp-server enable traps syslog Answer: B.txt E.(Topic 8) What is the purpose of the POST operation on a router? A. IPv6 uses an extension header instead of the IPv4 Fragmentation field. determine whether additional hardware has been added B. Unlike IPv4 headers. IPv6 headers use the Fragment Offset field in place of the IPv4 Fragmentation field.C Question No : 326 . D. B.B. F.

eliminating parts of the representation.0. fd15:db8:0::700:3:4F:527B D.0 255.(Topic 8) In which two formats can the IPv6 address fd15:0db8:0000:0000:0700:0003:400F:572B be written? (Choose two. but IETF recommendations suggest the use of lower case letters. router(config)#ip route 0. router(config)#ip route 0. The groups are separated by colons (:).A.0 0. the example address can be further simplified: 2001:db8:85a3::8a2e:370:7334 333 .0. fd15:0db8:0000:0000:700:3:400F:527B B.) A.0. fd15:db8::700:3:400F:572B Answer: D.255.0.[1] Thus. each group representing 16 bits (two octets). fd15:0db8::7:3:4F:527B E. Leading zeroes Leading zeroes in a group may be omitted. fd15::db8::700:3:400F:527B C.255.0 GigabitEthernet0/1 B. The full representation of eight 4-digit groups may be simplified by several techniques.E Explanation: An IPv6 address is represented as eight groups of four hexadecimal digits. the example address may be written as: 2001:db8:85a3:0:0:8a2e:370:7334 Groups of zeroes One consecutive group of zero value may be replaced with a single empty group using two consecutive colons (::).[1] Thus. router(config-router)#default-information originate always Answer: A Question No : 327 . router(config-router)#default-information originate D. An example of an IPv6 address is: 2001:0db8:85a3:0000:0000:8a2e:0370:7334 The hexadecimal digits are case-insensitive.255 GigabitEthernet0/1 C.0.0.

It uses a minimum amount of network bandwidth. stock quotes. C. It is bandwidth-intensive. and news. Updates are sent to a broadcast address. It is the most efficient way to deliver data to multiple receivers. It burdens the source host without affecting remote hosts.Question No : 328 . distance learning. corporate communications. Answer: D. B. C. Answer: A.E Explanation: IP multicast is a bandwidth-conserving technology that reduces traffic by simultaneously delivering a single stream of information to potentially thousands of corporate recipients and homes. D.) A. It simultaneously delivers multiple streams of data. E.(Topic 8) 334 . OSPF is a link-state protocol. B.) A. Updates are sent to a multicast address by default. D. and distribution of software. IP multicast delivers application source traffic to multiple receivers without burdening the source or the receivers while using a minimum of network bandwidth. Applications that take advantage of multicast include video conferencing. E.(Topic 8) Which two statements about IPv4 multicast traffic are true? (Choose two.C Question No : 329 . resulting in the most efficient delivery of data to multiple receivers. Question No : 330 . Routes are updated when a change in topology occurs. RIP is a link-state protocol. F. It uses split horizon. Multicast packets are replicated in the network at the point where paths diverge by Cisco routers enabled with Protocol Independent Multicast (PIM) and other supporting multicast protocols.B.(Topic 8) Which three statements about link-state routing are true? (Choose three.

a GRE Tunnel interface comes up as soon as it is configured and it stays up as long as there is a valid tunnel source address or interface which is up. IPS F. TTD D. A valid route to the destination address is missing from the routing table. Scan Timer Answer: A Question No : 331 . Hop Limit B.) A. The tunnel interface is down. C.) A. IOS D. The tunnel interface IP address is misconfigured. Answer: B.C.E Question No : 332 . The tunnel address is routed through the tunnel itself. Flow Label C. IDS C.Which IPv6 header field is equivalent to the TTL? A. ATM B. IOX E. The ISP is blocking the traffic.(Topic 8) Which two security appliances will you use in a network? (Choose two. B. SDM Answer: B. Hop Count E. An ACL is blocking the outbound traffic.D Explanation: Normally. F. D. E.(Topic 8) Which three circumstances can cause a GRE tunnel to be in an up/down state? (Choose three. The tunnel 335 .

RFC 1918 Answer: A Question No : 334 .(Topic 8) Which technology allows a large number of private IP addresses to be represented by a smaller number of public IP addresses? A. Autonegotiation is disabled.(Topic 8) What are two reasons that duplex mismatches can be difficult to diagnose? (Choose two. NAT B. This means that a static route or PBR forwarding of packets via the GRE tunnel interface remains in effect even though the GRE tunnel packets do not reach the other end of the tunnel. This causes data packets that go through the GRE tunnel to be "black holed". The interface that anchors the tunnel source is down. The symptoms of a duplex mismatch may be intermittent. Before GRE keepalives were implemented. even though an alternate route that uses PBR or a floating static route via another interface is potentially available. This is true even if the other side of the tunnel has not been configured. The interface displays a connected (up/up) state even when the duplex settings are mismatched.destination IP address must also be routable.) A. C. These three rules (missing route. Keepalives on the GRE tunnel interface are used in order to solve this issue in the same way as keepalives are used on physical interfaces. interface down and mis-routed tunnel destination) are problems local to the router at the tunnel endpoints and do not cover problems in the intervening network. D. Full-duplex interfaces use CSMA/CD logic. For example. so mismatches may be disguised by 336 . The route to the tunnel destination address is through the tunnel itself. B. NTP C. but are lost before they reach the other end of the tunnel. there were only three reasons for a GRE tunnel to shut down: There is no route to the tunnel destination address. Question No : 333 . RFC 1631 D. these rules do not cover the case in which the GRE tunneled packets are successfully forwarded.

the IP address of the first Fast Ethernet interface B. the router ID will be the first active interface that comes up on the router. Leased lines support up to T1 link speeds.(Topic 8) Which two statements about using leased lines for your WAN infrastructure are true? (Choose two. If that particular interface has more then one IP address. Leased lines provide highly flexible bandwidth scaling. the highest IP address among its active interfaces D. E.(Topic 8) If all OSPF routers in a single area are configured with the same priority value. the IP address of the console management interface C. F.B Question No : 335 . B. Answer: C. E. Leased lines with sufficient bandwidth can avoid latency between endpoints. the priority value until a loopback interface is configured Answer: C Explanation: Ordinarily the loopback interface would be selected as the router ID. D. 337 . the lowest IP address among its active interfaces E. 1-Gbps interfaces are full-duplex by default. what value does a router use for the OSPF router ID in the absence of a loopback interface? A.collisions.) A. Leased lines require little installation and maintenance expertise.D Question No : 336 . Answer: A. Leased lines provide inexpensive WAN access. C. then the highest address will be selected as the Router ID. Multiple leased lines can share a router interface. In the event that no loopback interface is configured.

1 class B and 1 class C) reserved for a private use. To allow direct access to a local device which is assigned a private IP address. the local devices sees this computer via it's private IP address. They are less costly than public IP addresses.(Topic 8) What are two benefits of private IPv4 IP addresses? (Choose two. C. However. The computers. Link-local addresses are used to form routing adjacencies. E. B. They are routed the same as public IP addresses. A network printer residing in your home is assigned a private address so that only your family can print to your local printer.Question No : 337 . There are three IP blocks (1 class A. They eliminate duplicate IP conflicts. B.) A. They can be assigned to devices without Internet connections.B Question No : 338 . Answer: A. OSPF. C. but uses your router's public IP address to communicate. When a computer is assigned a private IP address. OSPFv3 was developed to support IPv6 routing.(Topic 8) 338 . Answer: A. EIGRP. and the personal computers within an organizations are usually assigned private IP addresses. EIGRPv3 was developed to support IPv6 routing.) A. D. Question No : 339 . and BGP are the only routing protocols that support IPv6. a Network Address Translator (NAT) should be used. tablets and smartphones sitting behind your home. They eliminate the necessity for NAT policies. the devices residing outside of your local network cannot directly communicate via the private IP address. Loopback addresses are used to form routing adjacencies. D.(Topic 8) Which two statements about IPv6 and routing protocols are true? (Choose two.C Explanation: What is private IP address?A private IP address is the address space allocated by InterNIC to allow organizations to create their own private network. E.

Switch(config)#vlan 20 Switch(config)#Interface gig x/y Switch(config-if)#switchport access vlan 20 B. show ip flow export B.Which switching method duplicates the first six bytes of a frame before making a switching decision? A. fragment-free switching B. ip flow-export destination Answer: A. ip flow egress E. Switch(config)#Interface gig x/y 339 . ASIC switching Answer: C Explanation: Cut and Through Cut and Through method has lowest latency. ip flow ingress D. This method also processes invalid frames. These six bytes are the destination address of frame.(Topic 8) Which command sequence can you enter to create VLAN 20 and assign it to an interface on a switch? A. cut through switching D. Question No : 340 . interface ethernet 0/0 F. store and-forward switching C. This is the fastest method of switching.(Topic 8) Which two commands can you enter to verify that a configured NetFlow data export is operational? (Choose two.B Question No : 341 . show ip cache flow C.) A. Only advantage of this method is speed. In this method Switch only read first six bytes from frame after the preamble.

.. Only southbound APIs allow program control of the network. Only northbound API interfaces use a Service Abstraction Layer. and DELETE) with JSON syntax. interfaces.) A.automates the configuration of advanced IWAN features on Cisco 4000 Series Integrated Service Routers.delivers zero-touch deployment of Cisco Enterprise Network routers. Only southbound API interfaces use a Service Abstraction Layer. B. which will then be implemented by the APIC-EM Controller through its Southbound Interfaces. GET. Only northbound APIs allow program control of the network.Switch(config-if)#vlan 20 Switch(config-vlan)#switchport access vlan 20 C. switches and wireless controllers (including Wireless Access Points). PUT. The API is function rich and provides you with an easy-to-use.e. The APIC-EM API provides you with the ability to think about your network at a higher policy level rather than how to implement that policy. C. Both northbound and southbound API interfaces use a Service Abstraction Layer. the policy) and the controller figures out how to implement that policy for you. programmatic control of your network elements. your applications will make network policy decisions. Plug and Play (PnP) . E. F. D. Both northbound and southbound APIs allow program control of the network. Switch(config)#vlan 20 Switch(config)#Interface vlan 20 Switch(config-if)#switchport access vlan 20 E.C Explanation: APIC-EM Northbound InterfaceThe APIC-EM Northbound Interface is the only API that you will need to control your network programmatically. Switch(config)#vlan 20 Switch(config)#Interface vlan 20 Switch(config-if)#switchport trunk native vlan 20 D. Switch(config)#vlan 20 Switch(config)#Interface vlan 20 Switch(config-if)#switchport trunk allowed vlan 20 Answer: A Question No : 342 .(Topic 8) Which two statements about northbound and southbound APIs are true? (Choose two.e. 340 . The APIC-EM API is REST based and thus you will discover and control your network using HTTP protocol with HTTP verbs (i. and hosts. POST. When you use the APIC-EM API. Answer: B. Thus you tell the network what you want (i. The APIC-EM GA release focus’s on the following key customer applications: Intelligent WAN (IWAN) .

(Topic 8) Which feature can you implement to reserve bandwidth for VoIP calls across the call path? A. Answer: A Question No : 345 . C. The use of the SNMP and CLI ensures that APIC.eases and accelerates the task of computing end-to-end application flow path. D. This is the only technique that achieves this level of accuracy.Path Trace . It enables the outside interface to forward traffic. RSVP Answer: D Explanation: When implemented on all nodes in the path. It enables the inside interface to receive traffic. PQ B. it is important that you understand how the Southbound Interface is built. CBWFQ C. It enables port address translation. Southbound Interfaces are implemented with a Service Abstraction Layer (SAL) which speak to network elements using SNMP and CLI (Command Line Interface) of the elements that make up the network. Future APIC-EM releases will leverage other southbound technology such as NetConf as they become available. RSVP guarantees bandwidth for the call along the entire path for the entire duration of the call. It enables the use of a secondary pool of IP addresses when the first pool is depleted.(Topic 8) What is the effect of the overload keyword in a static NAT translation configuration? A. round robin D. Question No : 343 . Southbound InterfacesAlthough APIC-EM only exposes its Northbound Interfaces as an API.EM works with legacy Cisco legacy products. B.(Topic 8) 341 . Question No : 344 .

It can cause too many addresses to be assigned to the same interface. It prevents the correct translation of IP addresses on the inside network. show ip dhcp binding 10. Router(config)#boot system rom c7301-advipservicesk9-mz.12 Answer: A Question No : 348 . show ip dhcp conflict 10.(Topic 8) Which command can you execute to set the user inactivity timer to 10 seconds? 342 .122-33. D. C.122-23f. Router(config)# boot system tftp c7300-js-mz.2.What is the danger of the permit any entry in a NAT access list? A.B. B.121-20. show ip dhcp server statistics D.bin B. Router(config)# boot system flash c4500-p-mz.0.(Topic 8) Which three commands can you use to set a router boot image? (Choose three.bin E.(Topic 8) Which command can you enter to display duplicate IP addresses that the DHCP server assigns? A.2.) A.T4.12 C.2. Router(config)#boot flash:c180x-adventerprisek9-mz-124-6T. Answer: A Question No : 346 . show ip dhcp database 10. Router> boot flash:c180x-adventerprisek9-mz-124-6T.bin F.C Question No : 347 .bin Answer: A.bin C.bin D. It can lead to overloaded resources on the router. Router(config)#boot bootldr bootflash:c4500-jk9s-mz. It can disable the overload command.12 B.0.124-24.SB8a.0.

spanning tree loops can occur because BPDUs are still being transmitted and received on those ports. It becomes the root bridge for the configured VLAN. D. Question No : 350 . It goes into an errdisable state. an invalid configuration exists. When you enable BPDU guard on the switch. SW1(config-line)#exec-timeout 10 C. It continues operating normally. Answer: D Explanation: Understanding How PortFast BPDU Guard Works To prevent loops from occurring in a network. SW1(config-line)#exec-timeout 0 10 B. The most secure implementation of PortFast is to enable it only on ports that connect end stations to switches. It goes into a down/down state. the PortFast mode is supported only on nontrunking access ports because these ports typically do not transmit or receive BPDUs. SW1(config-line)#absolute-timeout 0 10 D.(Topic 8) Which command can you enter to view the ports that are assigned to VLAN 20? 343 . In a valid configuration. B.A. PortFastconfigured interfaces do not receive BPDUs. SW1(config-line)#absolute-timeout 10 Answer: A Question No : 349 . PortFast BPDU guard prevents loops by moving a nontrunking port into an errdisable state when a BPDU is received on that port.(Topic 8) When an interface is configured with PortFast BPDU guard. If a PortFast-configured interface receives a BPDU. how does the interface respond when it receives a BPDU? A. BPDU guard provides a secure response to invalid configurations because the administrator must manually put the interface back in service. Because PortFast can be enabled on nontrunking ports connecting two switches. spanning tree shuts down PortFast-configured interfaces that receive BPDUs instead of putting them into the spanning tree blocking state. C.

5/32? A. Switch#show ip interface vlan 20 Answer: A Question No : 351 .(Topic 8) After you configure the Loopback0 interface.16. Switch#show interface vlan 20 D. Router#show ip interface loopback 0 B.0/24 344 . 172.16. Switch#show ip interface brief C.(Topic 8) Which command can you enter to verify that a 128-bit address is live and responding? A. ping ipv6 Answer: C Question No : 352 . traceroute B. Router#show run C. telnet C. Router#show interface loopback 0 D. 172. Router#show ip interface brief Answer: A Question No : 353 . Switch#show vlan id 20 B. ping D. which command can you enter to verify the status of the interface and determine whether fast switching is enabled? A.0/25 C.1. 172.A.0/26 B.1.1.16.(Topic 8) What is the correct routing match to reach 172.16.1.

router#show ip interface s0/2/0 D. outside public F.D. 345 . F. inside global D. The interface is fully functioning.(Topic 8) Which type of address is the public IP address of a NAT device? A. inside local E. There is a duplex mismatch. C. B. Port security has disabled the interface. router#show interfaces Serial 0/2/0 C. outside local C.(Topic 8) Which command can you enter to determine whether serial interface 0/2/0 has been configured using HDLC encapsulation? A. the default route Answer: A Question No : 354 . The device at the other end of the connection is powered off. The serial interface is disabled. router#show platform B. D. E. router#\show ip interface brief Answer: C Question No : 356 . outside global B. The interface is configured with the shutdown command.(Topic 8) Which condition does the err-disabled status indicate on an Ethernet interface? A. inside public Answer: C Question No : 355 .

as long as one determines and resolves its root cause. An error-disabled port is a symptom of a deeper problem that must be resolved. Question No : 357 . the Errdisable feature is supported for these connectivity issues: ARP inspection Broadcast suppression BPDU port-guard Channel misconfiguration Crossbar failure Duplex mismatch Layer 2 protocol tunnel misconfiguration Layer 2 protocol tunnel threshold exceeded UDLD The error-disable function allows the switch to shut down a port when it encounters any of these situations. a bad network interface card (NIC) card (with physical problems. collisions are normal for half-duplex. as long as they do not exceed a small percentage of traffic. a NIC card connected to a switch). For example on the catalyst 6500 running catOS. These types of errors could be caused by a cable that is out of specification (too long. This last cause is common because of failures to negotiate the speed and duplex properly between two directly connected devices (for example. As the capabilities of the CatOS grew. wrong type. or driver problems).Answer: A Explanation: Causes of errDisable At first. there were more ways that a port could become error-disabled. defective). Late collisions occur after every device on the wire should have recognized that the wire was in use.) A. utilizes event-triggered updates E. or a port duplex misconfiguration. exchanges routing tables with neighbors C. Remember. a port being error-disabled is not by itself a cause for alarm. due to the Carrier-Sense MultiAccess (CSMA) nature of Ethernet. utilizes frequent periodic updates 346 . Only halfduplex connections should ever have collisions in a LAN. this feature was implemented to handle special collision situations where the switch detected excessive or late collisions on a port. Excessive collisions occur when a frame is dropped because of encountering 16 collisions in a row. provides common view of entire topology B. calculates shortest path D.(Topic 8) Which three characteristics are representative of a link-state routing protocol? (Choose three.

D Question No : 358 . WiMax B. Respond to organizational growth with the Cisco scale-as-it-grows licensing model. CMTS Answer: A. They rely on external firewalls for WLAN security.(Topic 8) 347 . One PolicyIncrease security with context-based control and user-specific services with a single source of business policy across wired. They can simplify the management and deployment of wireless LANs. B.B. They must be configured through a GUI over HTTP or HTTPS. available with all Cisco wireless controllers.(Topic 8) Which two statements about wireless LAN controllers are true? (Choose two. and remote access. Answer: A. E.Answer: A. management.C. They can manage mobility policies at a systemwide level. C.(Topic 8) What are three broadband wireless technologies? (Choose three. and management.C Question No : 359 . They are best suited to smaller wireless networks. municipal Wi-Fi D. DSLAM F. operations. wireless. Question No : 360 . satellite Internet C.) A. Configure wireless policy.E Explanation: Simplified OperationsCisco wireless controllers reduce operational expenses by simplifying network deployment. site-to-site VPN E. D. or security settings at any time through centralized provisioning and management.) A.

switch 00E0. What is the effect of the given configuration? A. It configures the default VLAN.9A1A.F90B. 348 . which switch takes over? A.(Topic 8) Refer to the exhibit. switch 0004. It configures the native VLAN. switch 0040. D. transport preferred all D.90C5 Answer: A Question No : 362 . transport input all Answer: D Question No : 361 . switch 00E0.6BE3 C.(Topic 8) If the primary root bridge experiences a power loss. It configures an inactive switch virtual interface. It configures an active management interface.F726.3DC6 D. B. transport output all C. transport type all B.0BC0.C182 B. C.Which command is necessary to permit SSH or Telnet access to a cisco switch that is otherwise configured for these vty line protocols? A.

(Topic 8) Which function of the IP SLAs ICMP jitter operation can you use to determine whether a VoIP issue is caused by excessive end-to-end time? A. It specifies IPv4 as the encapsulation protocol. It specifies that the tunnel is a Teredo tunnel. successive packet loss D. It specifies IPv6 as the encapsulation protocol.(Topic 8) Which standards-based First Hop Redundancy Protocol is a Cisco supported alternative to Hot Standby Router Protocol? A. B.B Question No : 365 .) A. jitter C. DHCP Answer: A Question No : 364 . It specifies IPv6 as the transport protocol. Answer: A.Answer: A Question No : 363 . C. packet loss B. round-trip time latency Answer: D 349 . TFTP D. VRRP B. D. E. GLBP C. It enables the transmission of IPv6 packets within the configured tunnel.(Topic 8) Which two statements about the tunnel mode ipv6ip command are true? (Choose two.

late collisions C.Question No : 366 . no earner B. show ip bgp summary B. runts Answer: B Question No : 367 . Layer 2 switch C.(Topic 8) Which command can you enter to verify that a BGP connection to a remote device is established? A. show ip bgp paths D. CRC errors E.(Topic 8) Which type of device can be replaced by the use of subinterfaces for VLAN routing? A. deferred F. giants D. show ip community-list C. Layer 2 bridge B. show ip route Answer: A Question No : 368 . router Answer: D Explanation: The only way to get off a layer two network segment is through a layer three 350 .(Topic 8) Which interface counter can you use to diagnose a duplex mismatch problem? A. Layer 3 switch D.

a switch with priority 4096 D. a switch with priority 20480 B. Router(config)#username jdone privilege 1 password 7 PASSWORD1 C. a switch with priority 8192 C. A Sub-Interface is a logical interface partitioned off from a physical interface. a switch with priority 12288 Answer: A Question No : 370 . In this lab you’ll use sub-interfaces to match the VLAN’s in the trunk to allow for interfaces in each VLAN and accomplish inter-vlan routing for the hosts as the router has an interface in each layer three network. Router(config)#username jdone privilege 1 password 7 08314D5D1A48 B. Question No : 369 . Router(config)#username jdone privilege 15 password 0 PASSWORD1 Answer: A Question No : 371 .(Topic 8) Which command can you enter to configure a local username with an encrypted password and EXEC mode user privileges? A. which tertiary switch can take over? A. in which case each VLAN would require its own router to get out of that layer two network to a different layer two network.device. A sub-interface allows you to have multiple interface configurations on a single physical interface. So let’s say for example you have a single switch with 5 different VLAN’s and machines on each VLAN.(Topic 8) 351 . Router(config)#username jdone privilege 15 password 0 08314D5D1A48 D.(Topic 8) If primary and secondary root switches with priority 16384 both experience catastrophic losses. commonly referred to as a Default Gateway for host machines.

(Topic 8) Which three statements about static routing are true? (Choose three. The advertised prefix length must be 64 bits. They may indicate a duplex mismatch. C.) A.B Question No : 373 . It is best used for small-scale deployments. It uses consistent route determination.(Topic 8) Which two statements about IPv6 router advertisement messages are true? (Choose two. C. D. B. It requires more resources than other routing methods.Which two statements about late collisions are true? (Choose two.C Question No : 374 . Answer: A. They occur when CRC errors and interference occur on the cable. E. D. Answer: A. E. They are sourced from the configured IPv6 interface address. They use ICMPv6 type 134.(Topic 8) 352 . Their destination is always the link-local address of the neighboring node. The advertised prefix length must be 48 bits. B. They indicate received frames that did not pass the FCS match. E. they occur after the 512th bit of the frame has been transmitted. By definition. Routing is disrupted when links fail. F.) A.B Question No : 372 . B. Routers can use update messages to reroute when links fail. C.B. D. Answer: A. They are frames that exceed 1518 bytes. It is best used for large-scale deployments.) A.

Extreme Discovery Protocol. capabilities. Answer: B Explanation: LLDP runs over the Data Link Layer.3-2012 section 6 clause 79.(Topic 8) Which condition indicates that service password-encryption is enabled? A. B. D.Which statement about LLDP is true? A. It is configured in global configuration mode. Foundry Discovery Protocol (FDP). The LLDP update frequency is a fixed value. the operating system cache 353 .(Topic 8) What is the authoritative source for an address lookup? A. D. so devices that use different Network so Answer D is wrong LLDP or Link Layer Discovery Protocol is vendor neutral. The local username password is in clear text in the configuration. and Microsoft's Link Layer Topology Discovery (LLTD). and neighbors on an IEEE 802 local area network. It runs over the transport layer. principally wired Ethernet The protocol is formally referred to by the IEEE as Station and Media Access Control Connectivity Discovery specified in IEEE 802. Question No : 375 . a recursive DNS search B.1AB[2] and IEEE 802. The enable secret is in clear text in the configuration. B. such as the Cisco Discovery Protocol (CDP). The local username password is encrypted in the configuration. LLDP performs functions similar to several proprietary protocols. The Link Layer Discovery Protocol (LLDP) is a vendor-neutral link layer protocol in the Internet Protocol Suite used by network devices for advertising their identity. C. C. It is a Cisco proprietary protocol. Answer: A Question No : 376 . Nortel Discovery Protocol (also known as SONMP). The enable secret is encrypted in the configuration.

the ISP local cache D. ARP E. fast switching D. FE80::/8 is used for link-local unicast. RARP D.(Topic 8) Which NAT function can map multiple inside addresses to a single outside address? A. E. B. 2001::1/127 is used for loopback addresses.) A. cut-through Answer: A Question No : 379 . C.(Topic 8) Which feature builds a FIB and an adjacency table to expedite packet forwarding? A. FF00:/8 is used for IPv6 multicast. the browser cache Answer: A Question No : 377 . TFTP Answer: A Question No : 378 . D.C. SFTP C.(Topic 8) Which three statements about IPv6 prefixes are true? (Choose three. PAT B. FE80::/10 is used for link-local unicast. process switching C. Cisco Express Forwarding B. 354 . FC00::/7 is used in private networks.

0. forwarding 355 . Enable secret c1sc0 Answer: D Question No : 381 . Enable password c1sc0 B. service timestamps log datetime msec E.2. no logging monitor D. FEC0::/10 is used for IPv6 broadcast.) A.B. no logging console B.F. logging host 10. Answer: A. listening C.(Topic 8) Which command sets and automatically encrypts the privileged enable mode password? A. Password enable c1sc0 D. blocking B.(Topic 8) Which logging command can enable administrators to correlate syslog messages with millisecond precision? A.21 Answer: D Question No : 382 .C Question No : 380 .(Topic 8) Which two spanning-tree port states does RSTP combine to allow faster convergence? (Choose two. Secret enable c1sc0 C. logging buffered 4 C. learning D.

B 356 .(Topic 8) The enable secret command is used to secure access to which CLI mode? A. exactly one standby active router E. POST C.) A.(Topic 8) Which step in the router boot process searches for an IOS image to load into the router? A.(Topic 8) What are two requirements for an HSRP group? (Choose two. one or more backup virtual routers D. exactly one backup virtual router Answer: A.E. bootstrap B. one or more standby routers C. user EXEC mode D. auxiliary setup mode Answer: B Question No : 385 . exactly one active router B. mini-IOS D.B Question No : 383 . global configuration mode B. privileged EXEC mode C. ROMMON mode Answer: A Question No : 384 . discarding Answer: A.

(Topic 8) During which phase of PPPoE is PPP authentication performed? A. Phase 1 Answer: A Explanation: PPPoE is composed of two main phases: Active Discovery Phase: In this phase. Phase 2 C. ESRP Answer: A Question No : 388 . show ip nat statistics B. the Active Discovery phase D. the PPP Session phase B.Question No : 386 . the PPPoE client locates a PPPoE server.(Topic 8) Which protocol advertises a virtual IP address to facilitate transparent failover of a Cisco routing device? A. clear ip nat statistics Answer: A Question No : 387 . called 357 .(Topic 8) Which command can you enter to display the hits counter for NAT traffic? A. DHCP C. FHRP B. the Authentication phase E. RSMLT D. debug ip nat C. show ip debug nat D.

It uses a single SYN-ACK message to establish a connection. AUX passwords are configured on the Cisco device. Once the link setup is completed.cisco. allowing data to be transferred over the PPP link within PPPoE headers.) A.com/c/en/us/td/docs/security/asa/asa92/configuration/vpn/asavpn-cli/vpn-pppoe. Use the show run command to show most passwords in clear text. Question No : 390 . D. C. Only passwords configured after the command has been entered will be encrypted. PPPoE functions as a Layer 2 encapsulation method. E. Answer: B Explanation: Enable vty. 358 . PPP options are negotiated and authentication is performed. During this phase.html Question No : 389 . B. D. a Session ID is assigned and the PPPoE layer is established.(Topic 8) What is the effect of using the service password-encryption command? A. all the passwords are encrypted. Reference: http://www. It will encrypt the secret password and remove the enable secret password from the configuration. the security of device access is improved. console. It will encrypt all current and future passwords. C. Only the enable secret password will be encrypted.an access concentrator. B. PPP Session Phase: In this phase. The connection is established before data is transmitted. It supports significantly higher transmission speeds than UDP.(Topic 8) What are three characteristics of the TCP protocol? (Choose three. It ensures that all data is transmitted and received by the remote device. Only the enable password will be encrypted. As a result. If the service password-encryption is used.

B. HSRP B.E.(Topic 8) What should be part of a comprehensive network security plan? A. software. or corrupt computer equipment. Question No : 392 . Physical security procedures may be the least expensive to implement but can also be the most costly if not implemented. Physically secure network equipment from potential access by unauthorized individuals. F. therefore. it is critical that each party to the network take appropriate measures to ensure that its system will not be physically breached. Physical access to a system or network provides the opportunity for an intruder to damage. Delay deployment of software patches and updates until their effect on end-user equipment is well known and widely reported E.E Question No : 391 . Answer: B Explanation: Computer systems and networks are vulnerable to physical attack.C. C. It requires applications to determine when data packets must be retransmitted. VRRP 359 . steal. Minimize network overhead by deactivating automatic antivirus client updates.(Topic 8) Which protocol is the Cisco proprietary implementation of FHRP? A. thereby compromising the entire network. Encourage users to use personal information in their passwords to minimize the likelihood of passwords being forgotten. and information. procedures should be implemented to ensure that systems and networks are physically secure. The most expensive and sophisticated computer protection software can be overcome once an intruder obtains physical access to the network. When computer systems are networked with other departments or agencies for the purpose of sharing information. Allow users to develop their own approach to network security. It uses separate SYN and ACK messages to establish a connection. D. Answer: B.

1 B. CARP Answer: A Question No : 393 . inter-VLAN routing using a Layer 2 switch C. tty password B. 2 C. inter-VLAN routing using a Layer 3 switch B.) A.(Topic 8) Which technology can enable multiple VLANs to communicate with one another? A. intra-VLAN routing using a Layer 3 switch Answer: A Question No : 394 .C. intra-VLAN routing using router on a stick D. GLBP D. aux password 360 .(Topic 8) If a router has four interfaces and each interface is connected to four switches.(Topic 8) Which two passwords must be supplied in order to connect by Telnet to a properly secured Cisco switch and make changes to the device configuration? (Choose two. enable secret password C. vty password D. 8 Answer: C Question No : 395 . 4 D. how many broadcast domains are present on the router? A.

switch-mdf-c1(config)#hostname switch-mdf1 B. The server runs on a central computer typically at the customer's site. RADIUS comprises three components: A protocol with a frame format that utilizes User Datagram Protocol (UDP)/IP. It provides encrypted multiprotocol support. A server. so Telnet uses vty for connecting a remote Cisco switch. It ensures that user activity is fully anonymous. switch-mdf-c1(config-if)#hostname switch-mdf1 Answer: A Question No : 397 . username password Answer: B. For access security. the vty password and enable password must be configured.C Explanation: Telnet presents a potential security risk. D. Answer: A Explanation: RADIUS Background RADIUS is an access server that uses AAA protocol.(Topic 8) Which command can you use to set the hostname on a switch? A. Question No : 396 .(Topic 8) Which statement about RADIUS security is true? A.E. Device-administration packets are encrypted in their entirety. It is a system of distributed security that secures remote access to networks and network services against unauthorized access. A client. C. while the clients reside in the dial-up access servers and can be distributed throughout the network. console password F. switch-mdf-c1#hostname switch-mdf1 D. switch-mdf-c1>hostname switch-mdf1 C. B. Cisco 361 . It supports EAP authentication for connecting to wireless networks.

inside private D. When it is provided with the user name and original password given by the user. Question No : 398 . authenticating the user.has incorporated the RADIUS Client into Cisco IOS Software Release 11. Network Security Transactions between the client and RADIUS server are authenticated through the use of a shared secret.25 PAD connection TACACS+ offers multiprotocol support. external local Answer: A. The RADIUS servers can act as proxy clients to other kinds of authentication servers. inside local B. In addition. it can support PPP. any user passwords are sent encrypted between the client and RADIUS server. inside global C. and other authentication mechanisms.1 and later and other device software. RADIUS does not support these protocols: AppleTalk Remote Access (ARA) protocol NetBIOS Frame Protocol Control protocol Novell Asynchronous Services Interface (NASI) X. which is never sent over the network. UNIX login.(Topic 8) Which two types of NAT addresses are used in a Cisco NAT device? (Choose two. RADIUS servers are responsible for receiving user connection requests. or Challenge Handshake Authentication Protocol (CHAP).B Question No : 399 . and returning all configuration information necessary for the client to deliver service to the user. This eliminates the possibility that someone snooping on an unsecured network could determine a user's password.(Topic 8) Which spanning-tree protocol rides on top of another spanning-tree protocol? 362 . outside private E. external global F. and then acting on the response that is returned. Flexible Authentication Mechanisms The RADIUS server supports a variety of methods to authenticate a user.) A. The client is responsible for passing user information to designated RADIUS servers. Client/Server Model A network access server (NAS) operates as a client of RADIUS. Password Authentication Protocol (PAP).

0.0 255.255.(Topic 8) Which command can you enter to determine whether a switch is operating in trunking mode? A.0. router(config)#ip route 0.0 GigabitEthernet0/1 Answer: A 363 .0.255. router(config)#ip route 192. show ip interface brief B.168.0 GigabitEthernet0/1 C.A.168.0.0 0. MSTP B.0.168.0 GigabitEthernet0/1 D.0.0 255.0. RSTP C.(Topic 8) Which command can you enter to route all traffic that is destined for 192. show interface switchport Answer: A Question No : 401 .255.0. show interfaces D.255.0/20 to a specific interface? A. show vlan C.0 255.240. router(config)#ip route 0. PVST+ D. Mono Spanning Tree Answer: A Question No : 400 . router(config)#ip route 192.0 GigabitEthernet0/1 B.0.255.

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