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

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

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

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

Question No : 11 DRAG DROP . Answer: 11 . 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. Not all the names or descriptions will be used.(Topic 1) Refer to the exhibit.

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

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

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

(Topic 1) Which of the following describes the roles of devices in a WAN? (Choose three. 15 . C.E Explanation: The idea behind a WAN is to be able to connect two DTE networks together through a DCE network. 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. Therefore a modem terminates an analog local loop is correct. F. A CSU/DSU terminates a digital local loop. A modem terminates an analog local loop. 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. A router is commonly considered a DTE device.D. A modem terminates a digital local loop. Answer: A. 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 DCE device.) A. B. D. E. A CSU/DSU terminates an analog local loop. A CSU/DSU is used between two digital lines For more explanation of answer D.Question No : 16 .

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

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

1.6. Exhibit C D. Exhibit D E. Exhibit A B.A. 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. This information (IP and MAC address of the default gateway) is saved in its ARP cache for later use.(Topic 1) 18 .168. Question No : 19 . Exhibit B C.1.168. Exhibit E F.6. Host A sends a broadcast frame asking the MAC address of 192.

If Subnet Mask is 255. must be a Layer 2 device for the PCs to communicate with each other.255. E. B.128 the hosts vary from x.255.0.D.E Explanation: If Subnet Mask is 255.x.x. If Subnet Mask is 255.127 & x.255. With a network wide mask of 255.255. Answer: B. With a network wide mask of 255.255.254. 19 .x.255.x. With a network wide mask of 255.255.0.255.255. C.x.) A. With a network wide mask of 255.128x.x.0 the 2 specified hosts fall in different subnets so they need a Layer 3 device to communicate. Which three statements correctly describe Network Device A? (Choose three.255.255. 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.x.128.0 . must be a Layer 3 device for the PCs to communicate with each other.128.x.255.254. each interface does require an IP address on a unique IP subnet.x. D. each interface does not require an IP address. each interface does not require an IP address.255.0 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. With a network wide mask of 255.0.Refer to the exhibit.255.

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

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 .0c07.6965.0c36. If a device detects another device is sending.40. After the message is sent.1. Router1 will strip off the destination MAC address and replace it with the MAC address 0000. Router1 will strip off the source MAC address and replace it with the MAC address 0000. the device continues to listen for traffic or collisions on the LAN.4320. C. a device will transmit its message.D Explanation: Ethernet network is a shared environment so all devices have the right to access to the medium.(Topic 1) Refer to the exhibit: What will Router1 do when it receives the data frame shown? (Choose three.168.) A. When there is no traffic detected. the device returns to its default listening mode. While this transmission is occurring. Question No : 22 . Router1 will strip off the source IP address and replace it with the IP address 192.Answer: C. If more than one device transmits simultaneously. B. D. it will wait for a specified amount of time before attempting to transmit.

168. E. All other switches in that broadcast domain will have only one root port. D. 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. In a properly functioning network with redundant switched paths. If a switch receives a frame for an unknown destination.) A.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. Note: Microsegmentation decreases the number of collisions but it increases the number of collision domains. Answer: A. Answer: B.D. 22 .(Topic 1) Which three statements accurately describe Layer 2 Ethernet switches? (Choose three.1. Switches that are configured with VLANs make forwarding decisions based on both Layer 2 and Layer 3 address information. B.192.40. Spanning Tree Protocol allows switches to automatically share VLAN information.F Explanation: Remember. F. it uses ARP to resolve the address.C. Microsegmentation reduces and can even eliminate collisions because each segment is its own collision domain ->. Question No : 23 . Microsegmentation decreases the number of collisions on the network. C. each switched segment will contain one root bridge with all its ports in the forwarding state. E. Router1 will forward the data packet out interface FastEthernet0/2. Each network device gets the full bandwidth of the segment and does not have to share the segment with other devices. Router1 will forward the data packet out interface FastEthernet0/1. Establishing VLANs increases the number of broadcast domains.

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

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

D. you break up collision domains by switching packets bound for other collision domains. but a collision domain can never have more than one broadcast domain associated with it.What two results would occur if the hub were to be replaced with a switch that is configured with one Ethernet VLAN? (Choose two. a collision domain is a network segment that allows normal network traffic to flow back and forth. The number of broadcast domains would decrease.D Explanation: Basically. and the other devices in the domain listen to the network in order to avoid data collisions. Answer: C. it doesn't get forwarded. while routers (and VLANs) break up collision domains and broadcast domains. Broadcast Domain: Broadcasting sends a message to everyone on the local network (subnet). The number of broadcast domains would increase. Only one device in the collision domain may transmit at any one time. so when a broadcast hits a router (or the perimeter of a VLAN). The simple way to look at it is this way: switches break up collision domains. Broadcast domains are exactly what they imply: they are network segments that allow broadcasts to be sent across them. 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. broadcasts can traverse collision domains freely. These days. a broadcast domain can contain multiple collision domains. In the old days of hubs. this meant you had a lot of collisions. you generally have one collision domain to a PC. however. So the client sends a DHCP Discover packet to EVERY PC in the local subnet 25 . The number of collision domains would remain the same. but the client does not know how to reach the DHCP Server. The Client is asking for a IP Address. An example for Broadcasting would be DHCP Request from a Client PC. don't allow broadcasts through by default. The number of broadcast domains would remain the same. Since switches and bridges allow for broadcast traffic to go unswitched. C. Also. E. F. With switches. Routers. The number of collision domains would increase. 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). since we mostly use switches to connect computers to the network.) A. A collision domain is sometimes referred to as an Ethernet segment. The number of collision domains would decrease. B.

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

7 Question No : 27 DRAG DROP .Answer: Explanation: Source Mac AddressDestination Mac AddressSource IP addressDestination MAC address MAC 0000.16.(Topic 1) Drag the cable type on the left to the purpose for which it is best suited on the right.16.3333MAC 0000.0c89.9999 IP 172.0c89.250IP 172.34. (Not all options are used.21.) Answer: 27 .

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

8.8.0 SwitchB(config)# interface FastEthernet 0/1 SwitchB(config-if)# ip address 192. SwitchB(config)# ip route 192.8.255.0 SwitchB(config-if)# no shutdown Answer: C Explanation: To remote access to SwitchB.0 SwitchB(config-if)# no shutdown E.168.8.254 255.255.168.255. SwitchB(config)# interface FastEthernet 0/1 SwitchB(config-if)# ip address 192.255.252 255.252 255. SwitchB(config)# ip default-network 192.8.8.8.8.255.255.168.255. SwitchB(config)# interface vlan 1 SwitchB(config-if)# ip address 192.254 SwitchB(config)# interface vlan 1 SwitchB(config-if)# ip address 192.252 255.168. Which set of commands is required to accomplish this task? A.168.255.255.168.0 SwitchB(config-if)# ip default-gateway 192. SwitchB(config)# ip default-gateway 192.168.255.255.255.0 SwitchB(config-if)# no shutdown C.168.252 255.254 SwitchB(config)# interface vlan 1 SwitchB(config-if)# ip address 192.255.8.255.168.254 255.252 255.A technician has installed SwitchB and needs to configure it for remote access from the management workstation connected to SwitchA.0 SwitchB(config-if)# no shutdown B.0 SwitchB(config-if)# no shutdown D. it must have a management IP address on a VLAN on that 29 .

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

31 . Switch-1 will flood the data out all of its ports except the port from which the data originated. Machines may have been removed from a port. or moved to another port on the same switch or a different switch. Answer: B Explanation: This question tests the operating principles of the Layer 2 switch. Check the MAC address table of Switch1 and find that the MAC address of the host does not exist in the table. C. 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. D. Switch-1 will send an ARP request out all its ports except the port from which the data originated. B. What will Switch-1 do with this data? A.d056. Switch-1 will drop the data because it does not have an entry for that MAC address. turned off.efa4. 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. This could cause confusion in frame forwarding. 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 forward the data to its default gateway. switch sends broadcast to all ports except the source to find out the destination host.

B. 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 . 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. the VLAN ID can be determined from the source MAC address and the MAC address table. D.(Topic 2) Which statement about VLAN operation on Cisco Catalyst switches is true? A. Answer: B Explanation: Each VLAN resides in its own broadcast domain.1Q trunk. spanning-tree backbonefast D. so incoming frames with unknown destinations are only transmitted to ports that reside in the same VLAN as the incoming frame. Question No : 32 . Broadcast and multicast frames are retransmitted to ports that are configured on different VLAN. spanning-tree mode mst Answer: B Explanation: 32 . spanning-tree uplinkfast B. C. spanning-tree mode rapid-pvst C.(Topic 2) Which command enables RSTP on a switch? A.

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

Gi0/2. SwitchC. In general. 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.C. SwitchB. 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.F Explanation: The question says “no other configuration changes have been made” so we can understand these switches have the same bridge priority. 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. the lower the value of its cost. 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. root Answer: A. root D. designated E. SwitchD. root F.B. Gi0/1. SwitchB. The receiving switch will add its local port cost value to the cost in the BPDU. The higher the bandwidth on a link. Gi0/2. Fa0/2. Now let’s have a look at the topology again 34 . 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. “cost” is calculated based on bandwidth of the link. Because SwitchC is the root bridge so the 2 ports nearest SwitchC on SwitchA (Fa0/1) and SwitchD (Gi0/2) will be root ports.

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. Switch D adds 4 (the cost value of 1Gbps link) and advertises this value (4) to SwitchB. Below summaries all the port roles of these switches: 35 .SwitchC advertises its cost to the root bridge with a value of 0. SwitchB adds another 4 and learns that it can reach SwitchC via Gi0/1 port with a total cost of 8. 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 ->. Now our last task is to identify the port roles of the ports between SwitchA & SwitchB.

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

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

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. Switch2 C.(Topic 2) Refer to the exhibit. Switch1 B. In this case. Switch3 D. Question No : 36 . Switch4 Answer: C Explanation: 38 . the native VLANs are different so although S1 will tag it as VLAN 1 it will be received by S2.

0000. if switches A (MAC=0200. the bridge ID contains both numbers combined together . Switch3 with a smaller MAC address will provide a designated port for printers.Printers are connected by hubs. as if looking at a real number anything less than 32768. 32768: 11-22-33-44-55-66 would be the bridge because it has a lower priority and MAC address.(Topic 2) Which switch would STP choose to become the root bridge in the selection process? A. the priority is compared first.1111). for example. Decide the switch that provides the spanning-tree designated port role between Switch3 and Switch4.0000. If two bridges have equal priority then the MAC addresses are compared. Question No : 38 . 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.will become the target of being the root.Bridge priority + MAC (32768.1111) and B (MAC=0200.2222) both have a priority of 32768 then switch A will be selected as the root bridge. 32769: 11-22-33-44-55-65 D.0200.(Topic 2) Refer to the exhibit. To compare two bridge IDs. Question No : 37 . 39 .0000. Each bridge has a configurable priority number and a MAC Address. The Bridge priority default is 32768 and can only be configured in multiples of 4096(Spanning tree uses the 12 bits extended system ID). Compare their MAC addresses. 32768: 22-33-44-55-66-77 C. They have the same priority 32768.. In this case.. 32768: 11-22-33-44-55-66 B.

B. 40 .1Q giants frames could saturate the link. VLAN 10 on CAT1 and VLAN 1 on CAT2 will send untagged frames. VLAN 10 is chosen as native. Question No : 39 . It has a higher MAC address than the elected root bridge. It is running RSTP while the elected root bridge is running 802.Why has this switch not been elected the root bridge for VLAN1? A. On CAT1. and this switch has a bridge ID priority of 32768. D. but on CAT2 the native VLAN is not specified. B.(Topic 2) Cisco Catalyst switches CAT1 and CAT2 have a connection between them using ports FA0/13. What will happen in this scenario? A. An 802.1Q trunk is configured between the two switches. which is higher than the roots priority of 20481. C. It has more than one interface that is connected to the root network segment.1d spanning tree. It has a higher bridge ID than the elected root bridge. Answer: D Explanation: The root bridge is determined by the lowest bridge ID. 802.

moving. D.E. VLANs provide a method of conserving IP addresses in large networks. VLANs provide a low-latency internetworking alternative to routed networks. “VLAN mismatch” can cause traffic from one vlan to leak into another vlan. D. not physical location. VLANs allow access to network services based on department. C. 41 .(Topic 2) Refer to the exhibit. VLANs can greatly simplify adding. E. because it can better control layer2 broadcast to improve network security.) A. VLANs establish broadcast domains in switched networks. A native VLAN mismatch error message will appear. F. Answer: A. Question No : 40 . VLAN 10 on CAT1 and VLAN 1 on CAT2 will send tagged frames. Question No : 41 .F Explanation: VLAN technology is often used in practice. Packet filtering is a function of firewall instead of VLAN. VLANs utilize packet filtering to enhance network security.C. Answer: C Explanation: A “native VLAN mismatch” error will appear by CDP if there is a native VLAN mismatch on an 802.1Q link.(Topic 2) What are three advantages of VLANs? (Choose three. This makes network more flexible and scalable. B. or changing hosts on the network.

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

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

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

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

VTP revision number D. highest port priority number E. Question No : 47 . lowest port MAC address C.(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. Question No : 46 .that they can pass traffic from multiple VLANs. the port with lowest cost to the root bridge will become root port (on non-root switch). 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. 46 . path cost B.(Topic 2) Refer to the exhibit. In particular.

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

(Topic 2) Which two of these are characteristics of the 802.Question No : 48 .) A. It modifies the 802. It includes an 8-bit field which specifies the priority of a frame. most network engineers prefer to use 802.E Explanation: 802.1q C. 802.1q since it is standards based and will interoperate with other vendors. Non-marked frame carries no VLAN identification information. D. ISL E. C. and thus requires that the FCS be recomputed. 802. mainly stipulates the realization of the VLAN. B.1Q protocol? (Choose two.(Topic 2) Which two link protocols are used to carry multiple VLANs over a single link? (Choose two. It is a trunking protocol capable of carrying untagged frames. 48 . It is a Layer 2 messaging protocol which maintains VLAN configurations across networks. VTP B. the industry standard 802. Answer: B.) A. E.1Q is a standardized relay method that inserts 4 bytes field into the original Ethernet frame and re-calculate the FCS. It is used exclusively for tagging VLAN frames and does not address network reconvergence following switched network topology changes. Generally. 802. IGP D.1Q frame relay supports two types of frame: marked and non-marked.3u Answer: B. or Virtual Bridged Local Area Networks protocol.D Explanation: Cisco switches can use two different encapsulation types for trunks. Question No : 49 .3 frame header.1q or the Cisco proprietary ISL. 802.1Q protocol.

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

Router1 and Switch2 should be connected via a crossover cable.Which two statements are true about interVLAN routing in the topology that is shown in the exhibit? (Choose two. This is known as the router on a stick configuration. for any trunk to be formed. E. one for each VLAN. subinterfaces must be used.F Explanation: In order for multiple VLANs to connect to a single physical interface on a Cisco router. Router1 needs more LAN interfaces to accommodate the VLANs that are shown in the exhibit. Host E and host F use the same IP gateway address.) A.(Topic 2) 50 . F. Also. C. The FastEthernet 0/0 interface on Router1 must be configured with subinterfaces. Question No : 52 . both ends of the trunk must agree on the encapsulation type. 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. Router1 will not play a role in communications between host A and host D. D.1q or ISL. B. so each one must be configured for 802.

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

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

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

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

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

source switch port D. 56 . source MAC address B. destination port address F. If the address is unknown. 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. and no users outside that VLAN can communicate with them.(Topic 2) Refer to the exhibit.a VLAN. destination IP address E. destination MAC address Answer: F Explanation: When a frame is received. By containing traffic originating on a particular LAN only to other LANs in the same VLAN. Question No : 59 . the switch looks at the destination hardware address and finds the interface if it is in its MAC address table. 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. possible on the same physical segment. the frame is broadcast on all interfaces except the one it was received on.(Topic 2) What does a Layer 2 switch use to decide where to forward a received frame? A. Question No : 58 . source IP address C.

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

(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. STP Answer: F Explanation: The Spanning-Tree Protocol (STP) prevents loops from being formed when switches or bridges are interconnected via multiple paths. Only trunks are able to pass information from devices in multiple VLANs. split horizon C. routing loops. split horizon D. and then removes the loop by shutting down selected bridge interfaces. This algorithm guarantees that there is one and only one active path between two network 58 . switching loops. hold down timers B. STP F. VTP E. switching loops.attached to the FastEthernet 0/1 interface. routing loops. Spanning-Tree Protocol implements the 802.1D IEEE algorithm by exchanging BPDU messages with other switches to detect loops. switching loops. routing loops. Question No : 60 .

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 ->. show interface interface C. show interface switchport Answer: A. show ip interface brief D.) A.(Topic 2) Which two commands can be used to verify a trunk link configuration status on a given Cisco switch interface? (Choose two. network D. physical B.devices. 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 trunk B. data link C.E Explanation: Example output from these two commands: 59 . Question No : 62 .(Topic 2) At which layer of the OSI model is RSTP used to prevent loops? A. show interface vlan E. Question No : 61 .

interface FastEthernet 0/3 60 .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.1q trunking 1 Fa0/22 auto n-802.1q trunking 1 Fa0/21 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.

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

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

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

(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.1D STP. Question No : 67 . RSTP is compatible with the original IEEE 802. RSTP not only defines the role of other ports: alternative port and backup port. forwarding status. arp address Answer: A Explanation: ICMP pings are used to verify connectivity between two IP hosts. Answer: B. It retains most of the parameters. but also defines status of 3 ports: discarding status. Question No : 68 .1D STP.C. RSTP is a proprietary implementation of IEEE 802. and makes no changes. learning status. RSTP defines no new port states.E Explanation: When network topology changes. 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. ping address B. referred to as RSTP) will speed up significantly the speed to re-calculate spanning tree. not revolution. traceroute address D. rapid spanning tree protocol (IEEE802.(Topic 2) 64 .1W. D. tracert address C.1D standard evolution. E. RSTP is 802.

F.1Q) to be used. RSTP significantly reduces topology reconverging time after a link failure. RSTP also uses the STP proposal-agreement sequence. C.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 (802.3ad B.1w C. the IEEE with document 802. in 2001. 802.1D D.Which IEEE standard protocol is initiated as a result of successful DTP completion in a switch over Fast Ethernet? A. RSTP is typically able to respond less than 10 seconds of a physical link failure. learning. which significantly reduces the convergence time after a topology change occurs in the network. Answer: A. 802. 802.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 .) A. RSTP works by adding an alternative port and a backup port compared to STP. RSTP port states are blocking.1w introduced an evolution of the Spanning Tree Protocol: Rapid Spanning Tree Protocol (RSTP). While STP can take 30 to 50 seconds to transit from a blocking state to a forwarding state. discarding. 802. To overcome this problem. RSTP expands the STP port roles by adding the alternate and backup roles. E.B. D. RSTP uses the same timer-based process as STP on point-to-point links. RSTP provides a faster transition to the forwarding state on point-to-point links than STP does. B. Question No : 69 . or forwarding.(Topic 2) Which three statements about RSTP are true? (Choose three.

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

the switch forwards untagged traffic in the native VLAN configured for the port. To accomplish this. It blocks VLAN 999 traffic from passing on the trunk. It creates a VLAN 999 interface.Question No : 71 . one switch must send frames to another switch and indicate which VLAN a particular frame belongs to. the operation of VTP B. On Cisco switches. VLAN pruning Answer: B Explanation: A broadcast domain must sometimes exist on more than one switch in the network. Question No : 72 . the process for root bridge selection E. B. The native VLAN is VLAN 1 by default. D. It designates VLAN 999 for untagged traffic. a trunk link is created to accomplish this 67 . C. It designates VLAN 999 as the default for all unknown tagged traffic. what does the IEEE 802.1Q standard describe? A.1Q tagging can receive both tagged and untagged traffic.(Topic 2) What is the function of the command switchport trunk native vlan 999 on a Cisco Catalyst switch? A. an approach to wireless LAN communication D. By default.(Topic 2) In a switched environment. Answer: B Explanation: Configuring the Native VLAN for Untagged Traffic A trunk port configured with 802. a method of VLAN trunking C.

1Q trunk link provides VLAN identification by adding a 4-byte tag to an Ethernet Frame as it leaves a trunk port. and servers.1Q protocol. Cisco switches support IEEE 802. A network technician is asked to design a small network with redundancy.VLAN identification. An 802.1Q are different methods of putting a VLAN identifier in a Layer 2 frame. Question No : 73 . D. The exhibit represents this design. Spanning-tree will need to be used. The connection between switches should be a trunk. This design will function as intended. B. with all hosts configured in the same VLAN.1Q. What conclusions can be made about this design? A. The router will not accept the addressing scheme.1Q for FastEthernet and Gigabit Ethernet interfaces. E. With 802. The IEEE 802. C. routers.1Q protocol interconnects VLANs between multiple switches. The router interfaces must be encapsulated with the 802. a network administrator can define a VLAN topology to span multiple physical devices. Answer: C 68 . ISL and IEEE 802.(Topic 2) Refer to the exhibit.

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

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

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

Receiver switches will transmit all unmarked packets to Native VLAN.) A. Answer: A. Switches can forward Layer 2 frame from Native VLAN on unmarked trunks port.1Q trunks require full-duplex. The command is accepted and you must configure the VLAN manually.1Q trunk link transmits VLAN information through Ethernet. point-to-point connectivity. 802. 802. it could lead to layer 2 loops.D.E Explanation: By default.1Q trunk ports between two devices. the same Native VLAN configuration is required on both sides of the link. B. If the Native VLAN in 802. D.1Q trunk ports on same trunk link is properly configured. Native VLAN is the default VLAN configuration of port. Note for the 802.(Topic 2) Refer to the exhibit. C. 802. 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 3.1Q trunking are correct? (Choose three.1Q trunk defined Native VLAN in order to forward unmarked frame.(Topic 2) Which three of these statements regarding 802. 802. 72 . 802. The 802. Question No : 79 . E.1Q trunks should have native VLANs that are the same at both ends. Question No : 78 .C. 802.1Q trunks can use 10 Mb/s Ethernet interfaces.1Q native VLAN frames are untagged by default.1Q trunking ports can also be secure ports.

This switch is running RSTP while the elected designated switch is running 802. D. what is the reason that interface FastEthernet 0/10 is not the root port for VLAN 2? A. C.(Topic 2) Refer to the topology shown in the exhibit. we must assume that there is a shorter path to the root bridge elsewhere. 73 . This switch has more than one interface connected to the root network segment in VLAN 2. This switch interface has a higher path cost to the root bridge than another in the topology. B. Question No : 80 .1d Spanning Tree. 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.Given the output shown from this Cisco Catalyst 2950.

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

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

Each VLAN creates a separate.(Topic 2) Refer to the exhibit. 6. When VLAN users move to another physical location.5. A network administrator is configuring an EtherChannel between SW1 and SW2. the network does not have to be configured. They are popularly used to reduce broadcast traffic. smaller broadcast domain. The SW1 configuration is shown. What is the correct configuration for SW2? A. 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. Segment multiple networks VLANs are typically used to achieve multiple purposes. Question No : 82 .

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

the port-channel 1 interface B. the lowest number member interface Answer: A Explanation: To create an EtherChannel interface and assign its IP address and subnet mask. Step 2 Router(config-if)# ip address ip-address subnet-mask Assigns an IP address and subnet mask to the EtherChannel interface. Reference: http://www.com/c/en/us/td/docs/switches/lan/catalyst2948gand4908g/120_7_w5_15d/configuration/guide/config/ether_ch. all member interfaces D.cisco. 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.A. not the underlying physical member interfaces.html Question No : 84 . 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. 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.(Topic 2) 78 . the highest number member interface C. Optionally. Step 3 Router(config-if)# exit Router(config)# Exits this mode.

The MAC address of the root bridge is 0017.1580 is the MAC address of this switch. Which statement is true? A. From the output we learn this switch is running Rapid STP. VLAN 20 is running the Per VLAN Spanning Tree Protocol. C. not PVST ->. Fa0/11 is the root port so we can confirm this switch is not the root bridge ->.1580. Answer: D Explanation: Only non-root bridge can have root port. SwitchA has one Root port and 1 Alternative port so it is not the root bridge. Question No : 85 . D. All of the interface roles of the root bridge are designated. The Fa0/11 role confirms that SwitchA is the root bridge for VLAN 20. The MAC address of the root bridge is 0017. 0017. not of the root bridge. because not all of the interface roles are designated.596d.2a00 ->. B. SwitchA is not the root bridge.596d.Refer to the exhibit.596d.(Topic 2) 79 .

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

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

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

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

11.1 And Interface Serial 1 of Router Brevard has 192. A.(Topic 3) Why do large OSPF networks use a hierarchical design? (Choose three. identify the fault on the Brevard router that is causing the lack of connectivity. incorrect subnet mask D. Question No : 91 .168. incompatible encapsulation E.) A. incompatible IP address B. to decrease latency by increasing bandwidth 84 .168. but they are unable to communicate.Two routers named Atlanta and Brevard are connected via their serial interfaces as illustrated.2. IPCP closed Answer: D Explanation: Because Interface Serial 0 of Atlanta Router has 192. These are from different network. Given the partial configurations. insufficient bandwidth C.10. link reliability too low F. The Atlanta router is known to have the correct configuration.

Router# show ip eigrp adjacency B. to reduce the complexity of router configuration F. What command will display the required information? A. Router# show ip eigrp topology C.C. Router# show ip eigrp interfaces D. 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. to reduce routing overhead C. The retransmit interval and the queue counts for the adjacent routers also need to be checked. Attached to that backbone via area border routers (ABRs) are a number of secondary tier areas.B. which shows the number of queued EIGRP packets) for the adjacent routers are listed: 85 . to speed up convergence D.(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. Router# show ip eigrp neighbors Answer: D Explanation: Below is an example of the show ip eigrp neighbors command.D Explanation: OSPF implements a two-tier hierarchical routing model that uses a core or backbone tier known as area zero (0). to confine network instability to single areas of the network E. The retransmit interval (Smooth Round Trip Timer – SRTT) and the queue counts (Q count. to lower costs by replacing routers with distribution layer switches Answer: B. Question No : 92 . reduced routing overhead.

1.64/28.3 ->.4. According to the routing table. Therefore the next-hop should be 10.5.4 Answer: C Explanation: The destination IP address 10.3 D.65? A. 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. 10.64/29 & 10.5.1.1.1.(Topic 3) Refer to the exhibit.3.1. 10.1.5.2 C.2 B.Question No : 93 .5. 10.1.1.2. 10. 86 .5. where will the router send a packet destined for 10.65 belongs to 10.3.1.

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

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

107.255. ip route 0. A static route will be established on the Manchester router to direct traffic toward the Internet over the most direct path available.0 172.0. If you want to prevent non-SSH connections. The speed of all serial links is E1 and the speed of all Ethernet links is 100 Mb/s.100.0.255.252 128.255.255.107.Answer: D Explanation: Secure Shell (SSH) is a protocol which provides a secure remote access connection to network devices. What configuration on the Manchester router will establish a route toward the Internet for traffic that originates from workstations on the Manchester LAN? A.shtml Question No : 97 .0.1.1.0.2 B.cisco. Communication between the client and server is encrypted in both SSH version 1 and SSH version 2.0 0.(Topic 3) Refer to the exhibit.0 128.0 255. Reference: www.0.0 255.0. Straight (non-SSH) Telnets are refused.1 89 .16.0. add the “transport input ssh” command under the lines to limit the router to SSH connections only. ip route 0. ip route 0.0.com/warp/public/707/ssh.1 C.

0. ip route 0.255.0. ip route 0.0.0.2 F.1 E.0 0.0 255. link delay E.D.0. when a dynamic protocol is also being used? A. You should generally only use default routing on stub networks—those with only one exit path out of the network. link cost Answer: B Explanation: By default the administrative distance of a static route is 1.16.100. administrative distance C.0 172.100.0 0. ip route 0.255 172.0.16.0 172. 90 . If you want to have the dynamic routing protocol used and have the static route be used only as a backup.0. hop count B.(Topic 3) Which parameter would you tune to affect the selection of a static route as a backup. Syntax for default route is: ip route <Remote_Network> <Netmask> <Next_Hop_Address>. meaning it will be preferred over all dynamic routing protocols.16.0.255.2 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. link bandwidth D. According to exhibit.100.0. Question No : 98 . you need to increase the AD of the static route so that it is higher than the dynamic routing protocol.0. all traffic towards Internet that originates from workstations should forward to Router R1.

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

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

calculates shortest path D. link-state routing protocol utilizes event-triggered updates (only sends update when a change occurs) ->.C. provides common view of entire topology B.0. Unlike Distance vector routing protocol (which utilizes frequent periodic updates). 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 >.2 Local(config)# ip route 10.1.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.(Topic 3) Routing has been configured on the local router with these commands: Local(config)# ip route 0.0 192.3.168. utilizes event-triggered updates E.255. exchanges routing tables with neighbors C.168.1 Local(config)# ip route 10.0.0.255.0.168.3 Drag each destination IP address on the left to its correct next hop address on the right.0 192.2.0.A.255.0.0 255.0 0.0 255. 93 .0.1. utilizes frequent periodic updates Answer: A. Question No : 103 DRAG DROP .0 192.

Answer: Explanation: 94 .

This is called the “longest match” rule. Question No : 104 . the route with the most bits in the mask set to “1 will be chosen to route packet.(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. 95 .

168.192/26 LAN be forwarded to 192. B.Based on the exhibited routing table.10.9 &192.(Topic 3) 96 .10.168. The router will forward packets from R3 to R2 to R1 AND from R3 to R1. The router will forward packets from R3 to R2 to R1.168. The router will forward packets from R3 to R1 to R2. C.10. D. Question No : 105 .10. how will packets from a host within the 192.1? A.10.0/30 is learned via 2 equal-cost paths (192. Answer: C Explanation: From the routing table we learn that network 192. The router will forward packets from R3 to R1.168.5) -> traffic to this network will be load-balancing.168.

SAP messages sent by other routers C.C Explanation: 97 . if the router ID has not been manually set.1 C.16.1. 10. Question No : 106 . beacons received on point-to-point links E.154.5.1 D. Given the output for this command.1.2 B. TTL packets from designated routers Answer: 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.) A. LSAs from other routers D.168. routing tables received from other link-state routers F. 192.5.Refer to the exhibit.(Topic 3) What information does a router running a link-state protocol use to build and maintain its topological database? (Choose two. 10. hello packets B. 172. what router ID will OSPF use for this router? A.154.

The protocol will define a Hello packet format and a procedure for exchanging the packets and processing the information the packets contain.255 area 0 Reference: http://www.ciscopress. Question No : 107 .0. In keeping with the friendly neighbor terminology. when configured. network 0.0.0.Neighbor discovery is the first step in getting a link state environment up and running.0. In turn.255.0. The network command network 0. place it in area 0.255.0.255) what the IP address is.0.0 0.255 area 0 dictates that you do not care (255.0. will include all interfaces into area 0? A.255. 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.(Topic 3) 98 . the advertisements are sent to every neighbor.255. each received LSA is copied and forwarded to every neighbor except the one that sent the LSA. a Hello protocol is used for this step.(Topic 3) What OSPF command.255.255 0.0. network 0.0.255.com/articles/article.0 area 0 C. As the term flooding implies. the routers may begin sending out LSAs. network 255.0.255.0 255.0 255.asp?p=26919&seqNum=3 Question No : 108 .255.0 area 0 D. but if an IP address is enabled on any interface. Example 3-1 Configuring OSPF in a Single Area router ospf 1 network 0.255 area 0 B.255.255. After the adjacencies are established.0.0 255.

D. If the flash does not have enough space you will see an error message like this: %Error copying tftp://192.Refer to the exhibit. the router asked “Erasing flash before copying? [confirm]” and the administrator confirmed (by pressing Enter) so the flash was deleted.167/ c1600-k8sy-mz. the flash has enough space to copy a new IOS without deleting the current one. In order for the router to use the new image as the default.l23-16a. B. The current IOS is deleted just because the administrator wants to do so.2. Note: In this case.168. Erasing current flash content is requested during the copy dialog. it must be the only IOS image in flash. C. Why is flash memory erased prior to upgrading the IOS image from the TFTP server? A. The router cannot verify that the Cisco IOS image currently in flash is valid.bin (Not enough space on device) Question No : 109 DRAG DROP .(Topic 3) 99 . Answer: C Explanation: During the copy process. Flash memory on Cisco routers can contain only a single IOS image.

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

19. These commands need to be added to the configuration: C-router(config)# router rip C-router(config-router)# network 172. These commands need to be added to the configuration: C-router(config)# router eigrp 123 C-router(config-router)# network 172.0 B.load IOS from Flash.0 D.255 area 0 C.Router does POST . The hosts in the VLANs have been configured with the appropriate default gateway. Question No : 111 .check the startup-config file in NVRAM for boot-system commands .0.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. No further routing configuration is required.3. 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.0 0.(Topic 3) Refer to the exhibit.19.Power on Router .0. These commands need to be added to the configuration: C-router(config)# router ospf 1 C-router(config-router)# network 172.19. Answer: D 101 . What is true about this configuration? A.0.Bootstrap starts IOS load .

2. the router will compare the IP addresses of each of 102 . The C-router will have knowledge of all three networks since they will appear as directly connected in the routing table.Explanation: Since all the same router (C-router) is the default gateway for all three VLANs.1 D. 172. no routing protocols need to be configured.2.1. 2.1 B. 192.1 C.1. Since the C-router already knows how to get to all three networks. Question No : 112 . If the router Cisco returns the given output and has not had its router ID set manually. all traffic destined to a different VLA will be sent to the C-router.(Topic 3) Refer to the exhibit. what value will OSPF use as its router ID? A.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.1. If more than one loopback interfaces are configured.168.16. 1.1.

Also the router will chose the highest loopback interface as its OSPF router ID (if available).0. C.0.0.0.0. which two commands set the gateway of last resort to the default gateway? (Choose two.0. who are the other routers in our area? Router Link States (Area 1) Link IDADV RouterAgeSeq#ChecksumLink count 10.0. Question No : 114 .0.1131480x8000022C0x0043993 10.(Topic 3) Which two statements about the OSPF Router ID are true? (Choose two.11212460x80000234 0x009CAC1 10. Answer: A.D Explanation: r120#show ip ospf data OSPF Router with ID (10.0.0.12010.11210.0.0.120) (Process ID 1) Next. The router automatically chooses the IP address of a loopback as the OSPF Router ID.0. D.) 103 .0.) A. the lowest IP address on the router becomes the OSPF Router ID. E. B. It identifies the source of a Type 1 LSA.0.0.1116000x8000023A 0x0092B31 10.the interfaces and choose the highest IP address from the loopbacks.11310. Question No : 113 . It should be the same on all routers in an OSPF routing instance.0. By default. It is created using the MAC Address of the loopback interface.11110.1201520x800002400x0046CB1 We can see OSPF Router ID will be used as source of Type 1 LSA.0.(Topic 3) If IP routing is enabled.

ip default-route 0.0.0. Below shows the output of this command (some next pages are omitted). ip default-gateway 0.1 Answer: C.0. Question No : 115 .16.0 0. show system D.2. ip route 172.2.0.0 172.0 (next hop)” commands can be used to set the default gateway in a Cisco router.0 D.0.E Explanation: Both the “ip default-network” and “ip route 0. show process C.2.0.0.(Topic 3) Which command displays CPU utilization? A.0.1 0.1 E. ip default-network 0.0.0.0. show version Answer: B Explanation: The “show process” (in fact.0.0.0.0 C.16.0.0 172. the full command is “show processes”) command gives us lots of information about each process but in fact it is not easy to read.0.0.0 B.0.0 0.16.0 0.0.0. show protocols B.A. 104 . ip route 0.0 0.

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

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

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

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

E.1.0. Configure a dynamic routing protocol on London to advertise summarized routes to Manchester.(Topic 3) 109 . What is the simplest way to accomplish this? A.2.0/22 to 10. D. Configure a dynamic routing protocol on Manchester to advertise a default route to the London router.16.1.1. B. F. Question No : 120 DRAG DROP .1. Configure a static route on London to direct all traffic destined for 172. 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. Configure a static default route on London with a next hop of 10. Configure a dynamic routing protocol on London to advertise all routes to Manchester.The network administrator must establish a route by which London workstations can forward traffic to the Manchester workstations. Configure Manchester to advertise a static default route to London. C.1.

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

The routing updates proceed step by step from router to router. Question No : 122 . E. a dynamic routing protocol on CentralRouter to advertise summarized routes to InternetRouter. Distance Vector routing protocols pass periodic copies of routing table to neighbor routers and accumulate distance vectors.Distance means how far and Vector means in which direction.) A.16.(Topic 3) Refer to the exhibit. In distance vector routing protocols. a dynamic routing protocol on InternetRouter to advertise all routes to CentralRouter.0. C. routers discover the best path to destination from each neighbor. B. a dynamic routing protocol on CentralRouter to advertise all routes to InternetRouter. 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. 111 . The network administrator requires easy configuration options and minimal routing protocol traffic. D. a static route on InternetRouter to direct traffic that is destined for 172.0/16 to CentralRouter. a dynamic routing protocol on InternetRouter to advertise summarized routes to CentralRouter.

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

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

Switch1(config)# interface fa0/1 Switch1(config-if)# ip address 192. for the switch itself to reach networks outside the local one. Don't get this confused with area numbers. C.24.535.2 billion. etc. Speed.(Topic 3) Which statement describes the process ID that is used to run OSPF on a router? A. 114 . are good. duplex.168. 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. Switch1(config)# interface fa0/1 Switch1(config-if)# duplex full Switch1(config-if)# speed 100 E.168.3 255. or each router can have a different number-it just doesn't matter. 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.1 D. The numbers you can use are from 1 to 65.Given the information in the graphic and assuming that the router and Switch2 are configured properly. Switch1(config)# line con0 Switch1(config-line)# password cisco Switch1(config-line)#login B. we know that connectivity.0 C. Question No : 125 . It is locally significant and is used to identify an instance of the OSPF database. which of the following commands should be issued on Switch1 to correct this problem? A.24. D. It is locally significant and must be the same throughout an area.255. the ip default-gateway command must be used. B. Switch1(config)# ip default-gateway 192. which can be from 0 to 4. However. It is globally significant and is used to identify OSPF stub areas. It is globally significant and is used to represent the AS number.255.

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

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

The Manchester serial address is 10. the ranges from 1 to 65535 so o is an invalid number -> but To configure OSPF. The London router is a Cisco 2610. D. F. C.In the router ospf command. The CDP information was received on port Serial0/0 of the Manchester router.) A.252.E Explanation: 123 .C. The CDP information was sent by port Serial0/0 of the London router.1. Answer: A. We also need to assgin an area to this process ->.1. The serial network between the two devices has a mask of 255.255. E. B. The two exhibited devices are the only Cisco devices on the network.(Topic 3) Refer to the exhibit.2. Question No : 134 . Given the output that is shown.1. The Manchester router is a Cisco 2610. we need a wildcard in the “network” statement. what three statements are true of these devices? (Choose three.1.255. not a subnet mask.1. The Manchester serial address is 10.

) A.1.com/RouterOnAStickCCNACertificationExamTutorial.(Topic 3) Which three elements must be used when you configure a router interface for VLAN trunking? (Choose three. and “Port ID (outgoing port)” refers to the port on the neighbor router.D. What is needed to allow communication between the VLANs? 124 .1.(Topic 3) On a corporate network. but they are unable to communicate with hosts on different VLANs. Therefore there are only 2 available hosts in this network (22 – 2 = 2). subinterface numbering that matches VLAN tags Answer: B. Please notice that “Interface” refers to the local port on the local router. one IP network or subnetwork for each subinterface C. a management domain for each subinterface D. So we can deduce the ip address (of the serial interface) of Manchester router is 10.E Explanation: This scenario is commonly called a router on a stick. hosts on the same VLAN can communicate with each other.1.1. A short. in this case it is the port of Manchester router. one subinterface per VLAN F. Question No : 135 .htm Question No : 136 .252. one physical interface for each subinterface B. Maybe the most difficult choice of this question is the answer E or F.255.255.1 ->.2 and the question stated that the subnet mask of the network between two routers is 255.thebryantadvantage. as shown in the output ->. subinterface encapsulation identifiers that match VLAN tags E. The platform of the neighbor router is cisco 2610. we learn that the IP address of the neighbor router is 10.From the output. well written article on this operation can be found here: http://www.

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

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

10. the router will use the default fallback sequence for locating the IOS and then it will enter setup mode or the setup dialogue. TFTP server (netboot) c.192/26 network to a host on the LAN attached to router R1? 127 . If IOS is loaded.168. Flash (sequential) b.(Topic 3) Refer to the exhibit. ROM)?] If no boot system commands in startup-config use the default fallback sequence in locating the IOS: a. What path will packets take from a host on the 192. ROM (partial IOS) or keep retrying TFTP depending upon router model 5. but there is no startup-config file.TFTP. The company uses EIGRP as the routing protocol. Question No : 138 .

168.25.16 255.168.0 255.25. 192.25.16 255.0 255. 192.255.168.168. Answer: D Explanation: Host on the LAN attached to router R1 belongs to 192.255.255. The path of the packets will be R3 to R2 to R1. which is an IP address in 192.168.255. D. 192. From the output of the routing table of R3 we learn this network can be reach via 192.255.64/26 subnet.240 D. The path of the packets will be R3 to R1 to R2.255. Question No : 139 .28 255. 192.255.252 E. The path of the packets will be both R3 to R2 to R1 AND R3 to R1. The path of the packets will be R3 to R1. 192.255.255. Which address and mask combination represents a summary of the routes learned by EIGRP? A.10.255.168.(Topic 3) Refer to the exhibit.240 F.252 C.10.252 Answer: C 128 .10.10. B. C.25.168.A.255.8/30 network (the network between R1 & R3) -> packets destined for 192. 192.240 B.168.64 will be routed from R3 -> R1 -> LAN on R1.25.25.168.255.168.9.28 255.

168.255.16 + 192.16 255.28 -> The increment should bE.168. The binary version of 28 is 11100. The subnet mask is /28. the OSPF route B.1111 1111.255. Which route or routes will the router install in the routing table? A.24 + 192. Note: From the output above. the OSPF and RIPv2 routes Answer: B Explanation: When one route is advertised by more than one routing protocol.1111 1111.25. The binary version of 16 is 10000.(Topic 3) A router has learned three possible routes that could be used to reach a destination network.240. 28 – 16 = 12 but 12 is not an exponentiation of 2 so we must choose 16 (24). The last is from RIPv2 and has a metric of 4.25. EIGRP learned 4 routes and we need to find out the summary of them: + 192. So. the RIPv2 route D.168. the EIGRP route C.20 + 192.25. Question No : 140 .255.25. Another route is from OSPF with a metric of 782. Therefore the subnet mask is /28 (=1111 1111. all three routes E. the best answer should be 192. One route is from EIGRP and has a composite metric of 20514560.240. The binary version of 24 is 11000.Explanation: The binary version of 20 is 10100.240.11110000) = 255.168. the router will choose to 129 .168.255.255. The mask is 255.255.25.

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

It will encrypt the secret password and remove the enable secret password from the configuration. The network administrator connected to router Coffee via the console port. Answer: E Explanation: Enable vty. console. Only the enable password will be encrypted. the security of device access is improved. 131 . Only passwords configured after the command has been entered will be encrypted. If the service password-encryption is used. IP routing is not enabled. AUX passwords are configured on the Cisco device. Based on the output of the show ip route command and the topology shown in the graphic. B.0 network cannot reach the server located on the 172. B.0 network. issued the show ip route command. As a result. C. Only the enable secret password will be encrypted.17.22. all the passwords are encrypted.31.5. Question No : 143 .What is the effect of using the service password-encryption command? A. D. and was able to ping the server.(Topic 3) Users on the 172. It will encrypt all current and future passwords. Use the show run command to show most passwords in clear text. E. The network has not fully converged. what is the cause of the failure? A.

22.(Topic 3) What are two benefits of using a single OSPF area network design? (Choose two. A static route is configured incorrectly.0. Answer: C Explanation: The default route or the static route was configured with incorrect next-hop ip address 172.0. 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 network.18.19. It is less CPU intensive for routers in the single area. The FastEthernet interface on Coffee is disabled.C. Answer: B.22. E.0 0. The correct IP address will be 172. The routing table on Coffee has not updated. IP route 0. D.18. It reduces the types of LSAs that are generated.31.0 172. E. It removes the need for virtual links.C Explanation: OSPF uses a LSDB (link state database) and fills this with LSAs (link state advertisement).0. F. It increases LSA response times. C.2 to reach server located on 172.2. B.2 Question No : 144 . It reduces the number of required OSPF neighbor adjacencies.0. The neighbor relationship table is not correctly updated.) A. 132 .5. D.22. then many of these LSA types (Summary ASBR LSA.

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

1. What will the router consider the most reliable information about the path to that network? A. router ospf network 10.1.168. a default route with a next hop address of 192.0/24 from multiple sources. Next.1.1.0 0. from all the /24 routes it will choose the one with the lowest administrative distance.0 255.1.255.10.(Topic 3) What command sequence will configure a router to run OSPF and add network 10.0 255.0. it will choose the route that has the longest match.168. meaning the most specific route.0/24 D.10.0.10.0.0 /24 to area 0? A.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. router ospf network 10.1.1.255 area 0 D.255 Answer: C 134 . an OSPF update for network 192.0 0. Question No : 147 .168. router ospf area 0 network 10.0/24 C.0 0.0. First. a static route to network 192.255.1.1 F.10.0 area 0 B.254/24 B.0 0.1.1. a directly connected interface with an address of 192.255 area 0 E.10.255. a RIP update for network 192. So.0 area 0 F.1.168.255. router ospf 1 network 10.1. a static route to network 192. router ospf area 0 network 10. Directly connected routes have an AD of 1 so this will be the route chosen. router ospf 1 network 10. it will choose the best one based on a couple of things.0.0.168.10.1.0/16 E.0.255 C.0.0.168.1.A router receives information about network 192.168. in this case the /24 routes will be chosen over the /16 routes.

Step 3 router ospf process-id Example: Device(config)# router ospf 109 Enables OSPF routing and enters router configuration mode. Step 2 Configure terminal Example: Device# configure terminal Enters global configuration mode.Explanation: Enabling OSPF SUMMARY STEPS 1.0. enable 2. router ospf process-id 4. configure terminal 3. Step 4 Network ip-address wildcard-mask area area-id Example: Device(config-router)# network 192.0.168. Enter your password if prompted.129. end DETAILED STEPS Command or Action Purpose Step 1 Enable Example: Device> enable Enables privileged EXEC mode. Step 5 End Example: Device(config-router)# end 135 . network ip-address wildcard-mask area area-id 5.16 0.3 area 0 Defines an interface on which OSPF runs and defines the area ID for that interface.

0.1. Incorrect answer: command.html#GUID-588D1301-F63C-4DAC-BF1C-C3735EB13673 Question No : 148 . For anyone viewing the configuration and issuing the show run command. 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.Exits router configuration mode and returns to privileged EXEC mode. enable password secret line vty 0 login password cisco C.cisco.0 0. Which set of commands will accomplish this task? A. 136 . service password-encryption access-list 1 permit 192.0. Reference: http://www. the password for Telnet access should be encrypted.168. line vty0 4 would enable all 5 vty connections.com/c/en/us/td/docs/ios-xml/ios/iproute_ospf/configuration/124t/iro-12-4t-book/iro-cfg.(Topic 3) A network administrator needs to allow only one Telnet connection to a router.255 line vty 0 4 login password cisco access-class 1 B. service password-encryption line vty 1 login password cisco D.

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

4. HFD(config)# ip route 10.255. HFD(config)# ip route 10.0.6. 90 B.255.0.0/24 network is to be configured on the HFD router.A static route to the 10.4.6. 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.255.255.5.5. Each routing 138 .5.6 0.0 255.0 255.5.5.255 fa0/0 B.6 E.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 10.0 10. 100 C.0.0 10.0 255.0 Answer: C.0 fa0/0: + 10.255 10.0 F.0: the destination network +fa0/0: the exit-interface Question No : 151 .255.255 10.255.5. HFD(config)# ip route 10.6.0.5.0 0.0 255.255.6.6. 110 D.5.5. Administrative distance defines the reliability of a routing protocol.6 255.255.0 fa0/0 D.255.(Topic 3) What is the default administrative distance of OSPF? A.5.6. Which commands will accomplish this? (Choose two.6 C.6. HFD(config)# ip route 10.0 0.0.4. HFD(config)# ip route 10. HFD(config)# ip route 10.6.0.4.5.255.5.) A.5.6.

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 .protocol is prioritized in order of most to least reliable (believable) with the help of an administrative distance value.

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

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

The range is from 1 to 16 routes.(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. show running-config Answer: B. 8 C. unlimited Answer: B Explanation: maximum-paths (OSPF) To control the maximum number of parallel routes that Open Shortest Path First (OSPF) can support. use the maximum-paths command. Question No : 156 . Command Default 8 paths 142 . 2 B. Also running the new IOS may require more RAM than the older one so we should check the available RAM too. 16 D. Syntax Description maximum Maximum number of parallel routes that OSPF can install in a routing table.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. We can check both with the “show version” command.

143 . and Load Answer: A Explanation: The well-known formula to calculate OSPF cost is Cost = 108 / Bandwidth Question No : 158 .Question No : 157 . 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. Delay. Bandwidth. Router# service password-encryption B. Router(config)# password-encryption C.(Topic 3) Which parameter or parameters are used to calculate OSPF cost in Cisco routers? A. that is all. This is configured in global configuration mode. This command uses a very weak encryption because the router has to be very quickly decode the passwords for its operation. Bandwidth B. Bandwidth and Delay C. and MTU D. Bandwidth. It is meant to prevent someone from looking over your shoulder and seeing the password. MTU. Delay. Router(config)# service password-encryption D. Reliability.(Topic 3) Which command encrypts all plaintext passwords? A.

2 Router(config-subif)# encapsulation dot1q 20 Router(config-subif)# ip address 192.255.10.168.10.Question No : 159 .0 Router(config-if)# no shut down B. Switch1(config)# vlan database Switch1(config-vlan)# vtp domain XYZ Switch1(config-vlan)# vtp server 144 . What commands must be configured on the 2950 switch and the router to allow communication between host 1 and host 2? (Choose two.20.1.1 Router(config-subif)# encapsulation dot1q 10 Router(config-subif)# ip address 192. Router(config)# interface fastethernet 0/0 Router(config-if)# ip address 192.20.(Topic 3) Refer to the exhibit.255. Router(config)# router eigrp 100 Router(config-router)# network 192.0 D.255.0 Router(config-router)# network 192.0 C.255.168.) A.255.168.1 255.1 255. Router(config)# interface fastethernet 0/0 Router(config-if)# no shut down Router(config)# interface fastethernet 0/0.168.255.0 Router(config)# interface fastethernet 0/0.1 255.168.

No configuration file was found in flash.1. What can be determined about the router from the console output? A. Switch1(config)# interface vlan 1 Switch1(config-if)# ip default-gateway 192. C. Answer: A Explanation: When no startup configuration file is found in NVRAM.168. On the switch. 145 . where each subinterface is assigned a VLAN and IP address for each VLAN. No configuration file was found in the PCMCIA card. the System Configuration Dialog will appear to ask if we want to enter the initial configuration dialog or not. No configuration file was found in NVRAM.E Explanation: The router will need to use subinterfaces. Configuration file is normal and will load in 15 seconds. 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. Switch1(config)# interface fastethernet 0/1 Switch1(config-if)# switchport mode trunk F.1 Answer: B.E. Question No : 160 . D.(Topic 3) Refer to the exhibit. B.

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

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

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

reduced cost B. better throughput C. DLCI Answer: D Explanation: The PPP Link Control Protocol (LCP) is documented in RFC 1661. the authentication protocol. compression of PPP header fields.(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. LCP E. increased security E.) A. broadband incompatibility D. callback. Common LCP options include the PPP MRU. NCP B.(Topic 4) Which PPP subprotocol negotiates authentication options? A. reduced latency Answer: A. and multilink options. scalability F.Question No : 165 .D. particularly when 149 .E Explanation: IPsec offer a number of advantages over point to point WAN links. ISDN C. LPC negotiates link and PPP parameters to dynamically configure the data link layer of a PPP connection. Question No : 166 . SLIP D.

201.201.(Topic 4) A corporation wants to add security to its network. where as a point to point link would need to be provisioned to each location. Other types of access from host B to the Finance Web Server should be blocked.237. These include reduced cost.201.201. The Core connection uses an IP address of 198.4 The Finance Web Server has been assigned an address of 172.168.168. You have been tasked to create and apply a numbered access list to a single outbound interface.1 host B 192. Access to the router CLI can be gained by clicking on the appropriate host. The requirements are: Host B should be able to use a web browser (HTTP) to access the Finance Web Server. This access list can contain no more than three statements that meet these requirements.multiple locations are involved. 150 .168.18.65.168.2 host C 192. Question No : 167 CORRECT TEXT .132.18. increased security since all traffic is encrypted.237.3 host D 192.22. The Public Web Server in the Server LAN has been assigned an address of 172.1 – 192. The computers in the Hosts LAN have been assigned addresses of 192.201.254. and increased scalability as s single WAN link can be used to connect to all locations in a VPN.17. host A 192.168.22.168.201. All access from hosts in the Core or local LAN to the Finance Web Server should be blocked. All passwords have been temporarily set to “cisco”. All hosts in the Core and on local LAN should be able to access the Public Web Server.

151 .

152 .

24. To see which interface this is.Answer: Please check the below explanation for all details. use the “show ip interface brief” command: Macintosh HD:Users:danielkeller:Desktop:Screen Shot 2015-11-17 at 3.png 153 .34 PM. 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.

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.22. In the address box type http://172.109. just click on host B to open its web browser. Corp1#configure terminal Our access-list needs to allow host B – 192.2 host 172. C and D) and check to make sure you can’t access Finance Web Server from these hosts.109.2 to the Finance Web Server 172.18. Finally. so our first line is this: Corp1(config)#access-list 100 permit tcp host 192.125. so we will place our numbered access list here in the outbound direction. All access from hosts in the Core or local LAN to the Finance Web Server should be blocked.17 via HTTP (port 80). If your configuration is correct then you can access it. Then.From this.22. we know that the servers are located on the fa0/1 interface.22.109. our next two instructions are these: Other types of access from host B to the Finance Web Server should be blocked.17 eq 80 Then. repeat to make sure they can reach the public server at 172.168125. To verify. 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.22. This can be accomplished with one command (which we need to do as our ACL needs to be no more than 3 lines long). save the configuration Corp1(config-if)#end Corp1#copy running-config startup-config 154 .17 Our last instruction is to allow all hosts in the Core and on the local LAN access to the Public Web Server (172.18 any Finally.22.109.18) Corp1(config)#access-list 100 permit ip host 172.22.22.109.109. Click on other hosts (A.168.

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

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

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

162

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.

163

4. the value of the local DLCI C.(Topic 4) Which two statistics appear in show frame-relay map output? (Choose two.Question No : 181 .4.4.C Explanation: Subinterfaces are used for point to point frame relay connections. D. dynamic. the number of FECN packets that are received by the router D. dynamic.) A. the IP address of the local router Answer: B. Each subinterface requires a unique IP address/subnet. status defined..0x6410). the status of the PVC that is configured on the router E. active Serial0/0 (up): ip 10. 164 .D Explanation: Sample “show frame-relay map” output: R1#sh frame map Serial0/0 (up): ip 10. you cannot assign multiple interfaces in a router that belong to the same IP subnet. They create split-horizon issues.3 dlci 403(0x193. They are ideal for full-mesh topologies. C. They require the use of NBMA options when using OSPF.0x6430). emulating virtual point to point leased lines.1 dlci 401(0x191. They require a unique subnet within a routing domain. Remember. Answer: B.(Topic 4) What are two characteristics of Frame Relay point-to-point subinterfaces? (Choose two. Question No : 182 . B. broadcast. the number of BECN packets that are received by the router B.4. They emulate leased lines.) A. E.

status defined.) A. CISCO.4 dlci 401(0x191.4. CHAP authentication periodically occurs after link establishment.1 dlci 401(0x191. active Serial0/0 (up): ip 10. B.4.. 165 .4 dlci 401(0x191. static. broadcast. show frame-relay lmi C. broadcast.(Topic 4) Which two statements about using the CHAP authentication mechanism in a PPP link are true? (Choose two. status defined. active Question No : 183 . status defined. CHAP uses a three-way handshake.4. CISCO. dynamic. status defined.4.4.0x6430). show frame-relay pvc B. 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 10.0x6410).4.(Topic 4) What command is used to verify the DLCI destination address in a Frame Relay static configuration? A. active Question No : 184 .4.0x6410). show frame-relay map D. CHAP uses a two-way handshake.broadcast.0x6410). status defined. static. active Serial0/0 (up): ip 10.4. dynamic. C.3 dlci 403(0x193..

to be forwarded across the PVC. Question No : 185 . CHAP periodically verifies the identity of the client by using a three-way handshake. B.8 is the local router port used to forward data.16.(Topic 4) The command frame-relay map ip 10. such as RIP updates. D. E. 102 is the remote DLCI that will receive the information.121. This command should be executed from the global configuration mode.D. F. CHAP authentication is performed only upon link establishment. Question No : 186 . so the PVC supports broadcast. and may happen again at any time afterwards. The verification is based on a shared secret (such as the client user's password).8 102 broadcast was entered on the router.(Topic 4) 166 . C. The IP address 10.C Explanation: CHAP is an authentication scheme used by Point to Point Protocol (PPP) servers to validate the identity of remote clients. E. Answer: E Explanation: Broadcast is added to the configurations of the frame relay. allowing the routing protocol updates that use the broadcast update mechanism to be forwarded across itself. Answer: B. Which of the following statements is true concerning this command? A. CHAP has no protection from playback attacks. The broadcast option allows packets. CHAP authentication passwords are sent in plaintext. This happens at the time of establishing the initial link (LCP).16.121. This command is required for all Frame Relay configurations.

100. incorrect IP address Answer: C Explanation: First we have to say this is an unclear question and it is wrong.255. Both routers are running IOS version 12. But we guess there is a typo in the output. incorrect bandwidth configuration B. Layer 2 B. That makes answer C correct.0.RouterA is unable to reach RouterB. Maybe the “ip address 172. The “frame-relay map ip” statement is correct thus none of the four answers above is correct.1 255. After reviewing the command output and graphic. incorrect map statement D.100.16.0. Layer 4 D.0.0 command should be “ip address 172. what is the most likely cause of the problem? A.255. Layer 5 Answer: A Explanation: 167 .0. Question No : 187 .2 255.(Topic 4) At which layer of the OSI model does PPP perform? A.16. Layer 3 C. incorrect LMI configuration C.

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

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

1.168. host B IP address: 192.1.79 B. host A IP address: 192. 170 .168.10 IP address as their default gateway.can be collapsed using ::.10 and VLAN 20 on fa0/0.F Explanation: It’s a “router-on-a-stick” configuration.(Topic 5) Refer to the exhibit.1.168. host B default gateway: 192.129 F. Question No : 191 .1.1. each hosts must also be in the same subnet as fa0/0.168. host B IP address: 192.20. but this can only be done once in an IP address. Which means each host in the VLAN must corresponds with the VLAN configured on the sub-interfaces. A network administrator is adding two new hosts to SwitchA.10 IP – same with hosts in VLAN 20.78 D. host A default gateway: 192. host A IP address: 192. VLAN 10 is configured on fa0/0.168.190 Answer: A.1.128 E.C. So each hosts in VLAN 10 must use fa0/0.64 C.) A. Which three values could be used for the configuration of these hosts? (Choose three.168.

168.190. •An SNMP agent — The software component within the managed device that maintains the data for the device and reports these data.78 /27: 192.94 and for 192. Host A (using port 6 – VLAN 10) must use IP 192.168. AES E.168. Reference: http://www.html 171 . default gateway 192.1.1.1.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.B.cisco.1.128 – .130 /26: 192. •A managed information base (MIB) — The collection of managed objects on the SNMP agent. MIB B. supervisor F.168.79. as needed.65 – .(Topic 5) What are three components that comprise the SNMP framework? (Choose three.78.So find out the usable IP addresses on each sub-interfaces – for 192. To enable the SNMP agent. you must define the relationship between the manager and the agent.168.) A.168. Cisco Nexus 1000V supports the agent and MIB.190. agent C.168. 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.1. Question No : 192 .130. SNMP is defined in RFCs 3411 to 3418.168. Host B (using port 9 – VLAN 20) must use IP 192. set D.1.1. manager Answer: A. default gateway 192.1.

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

by using the “logging trap 4 command. IP address: 192. conditions exist 6 informational Informational messages 7 debugging Debugging messages If you specify a level with the “logging trap level” command.20.254 Subnet Mask: 255.255.25 D.255.20. the router is assigned the first usable host address while the sales server is given the last usable host address. IP address: 192.20.255. IP address: 192.24/29. IP address: 192.255. Question No : 195 .255.20.30 Subnet Mask: 255. critical. For example.248 Default Gateway: 192.20.20.14 Subnet Mask: 255. all the logging of emergencies.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. errors.168.1 C.17 E.(Topic 5) An administrator must assign static IP addresses to the servers in a network.255.168. For network 192.0 Default Gateway: 192.20.20.168.168.168.248 Default Gateway: 192. alerts.240 Default Gateway: 192.168.30 Subnet Mask: 255. Which of the following should be entered into the IP properties box for the sales server? A.255. warnings will be logged.20. that level and all the higher levels will be logged.168.255.9 B.20.20.255.168.240 Default Gateway: 192.168.30 Subnet Mask: 255. but significant. IP address: 192.168.25 Answer: C Explanation: 173 .255.168.

and cannot be used globally for Internet use. broadcast address on the network C.24. designated IP address to the DHCP server Answer: A. D. which two IP addresses should never be assignable to hosts? (Choose two.168. B. IP address used by the interfaces E. because other public routers can use the same range.For the 192. C.25 (router) – 192.168. Addresses in a private range will not be routed on the Internet backbone. manually assigned address to the clients F. Question No : 196 .24.24/29 network.) A.30 (used for the sales server). Only the ISP router will have the capability to access the public network. the usable hosts are 192. IP address leased to the LAN D. network or subnetwork IP address B. A conflict of IP addresses happens. Answer: A Explanation: Private RFC 1918 IP addresses are meant to be used by organizations locally within their own network only.20. Question No : 197 .(Topic 5) What will happen if a private IP address is assigned to a public interface connected to an ISP? A.168. The NAT process will be used to translate this address to a valid IP address.(Topic 5) When a DHCP server is configured.B Explanation: 174 .

0. 175 .2.1.255/24) should never be assignable to hosts. GLBP supports clear text and MD5 password authentication between GLBP group members.(Topic 5) What are three benefits of GLBP? (Choose three. you will receive an error message saying that they can’t be assignable.(Topic 5) Refer to the exhibit. GLBP supports up to 1024 virtual routers.D. C. GLBP can load share traffic across a maximum of four routers. GLBP is an open source standardized protocol that can be used with multiple vendors. GLBP elects two AVGs and two standby AVGs for redundancy. Question No : 198 .Network or subnetwork IP address (for example 11. F. B.0/8 or 13.0. When try to assign these addresses to hosts.1.0/16) and broadcast address (for example 23. Answer: B.0. GLBP supports up to eight virtual forwarders per GLBP group. E. D.E Question No : 199 .) A.

ExternalRouter must be configured with static routes to networks 172.1. D. Answer: C Explanation: The “list 1 refers to the access-list number 1. The configuration that is shown provides inadequate outside address space for translation of the number of inside addresses that are supported.16.16.(Topic 5) Which IPv6 address is the all-router multicast group? A.0/24. Because of the addressing on interface FastEthernet0/1.What statement is true of the configuration for this network? A. C. FF02::1 176 .0/24 and 172. Question No : 200 .2. The number 1 referred to in the ip nat inside source command references access-list number 1. the Serial0/0 interface address will not support the NAT configuration as shown. B.

Monitor IP performance using the DHCP server. Set the IP gateway to be used by the network. DHCP servers assigns IP addresses from a pool of addresses and also assigns other parameters such as DNS and default gateways to hosts. Configure IP address parameters from DHCP server to a host. C. D. Provide an easy management of layer 3 devices. F.(Topic 5) Which two tasks does the Dynamic Host Configuration Protocol perform? (Choose two. FF02::2 C. B.) A. Perform host discovery used DHCPDISCOVER message. 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 .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). 177 . Answer: C. E. Assign and renew IP address from the default pool. It involves clients and a server operating in a client-server model. FF02::3 D.B.

0 /22 C. local6 D. local5 C.0.0 /21 B. local7 Answer: D Explanation: By default.0.0.0. 10.0.com/articles/article.(Topic 5) What is the default Syslog facility level? A. Reference: http://www. most Cisco devices provide options to change the facility level from their default value. Moreover. local4 B.0 /23 D.Question No : 202 . CatOS switches. 10. 10.asp?p=426638 Question No : 203 .ciscopress. and VPN 3000 Concentrators use facility local7 while Cisco PIX Firewalls use local4 to send syslog messages.0. 10. Cisco IOS devices.0 /24 178 .(Topic 5) Refer to the exhibit. What is the most appropriate summarization for these routes? A.0.0.

they have the same format as unicast addresses. podcast E. according to the routing protocol’s definition of distance. 10.0.0.(Topic 5) 179 . Almost any unicast address can be employed as an anycast address. typically the nearest host. A multicast address is also used by multiple hosts.0. and only those four networks.0/22 subnet mask will include the 10. multicast D. A packet sent to an anycast address is delivered to just one of the member interfaces. and 10. A packet that is sent to a multicast address is delivered to all interfaces that have joined the corresponding multicast group. anycast addressing.0. usually belonging to different nodes.0.0. The Internet Protocol delivers packets sent to a unicast address to that specific interface. 10. anycast B.0. which acquire the multicast address destination by participating in the multicast distribution protocol among the network routers.2. allcast Answer: A. Anycast addresses cannot be identified easily. A unicast address identifies a single network interface. and differ only by their presence in the network at multiple points. Question No : 204 . and multicast addressing.1. An anycast address is assigned to a group of interfaces.Answer: B Explanation: The 10. broadcast C.(Topic 5) Which two are features of IPv6? (Choose two.3.C Explanation: IPv6 addresses are classified by the primary addressing and routing methodologies common in networking: unicast addressing.0. Question No : 205 .0 networks.0.) A.0.

Every IPv6-enabled interface must contain at least one loopback and one link-local address. 0007. Leading zeros in an IPv6 16 bit hexadecimal field are mandatory. 0000. C.ACxx . the virtual MAC address if 0000.0c07. anycast. in which xxx is the HSRP group. two or more devices support a virtual router with a fictitious MAC address and unique IP address.Which two of these statements are true of IPv6 address representation? (Choose two. every interface can have multiple unique local and global addresses. There are two version of HSRP. + With HSRP version 1.5E00.B400. D. B. Reference: IPv6 Addressing at a Glance – Cisco PDF Question No : 206 . Every IPv6 interface contains at least one loopback address. 180 .AC15 D. The first 64 bits represent the dynamically created interface ID. Optionally. 0007.Fxxx. A single interface may be assigned multiple IPv6 addresses of any type.AE01 C. There are four types of IPv6 addresses: unicast.0C07. + With HSRP version 2.0C9F.5E00. and broadcast.(Topic 5) What is a valid HSRP virtual MAC address? A. Answer: B. E.B301 Answer: C Explanation: With HSRP. multicast. the virtual router’s MAC address is 0000.C Explanation: A single interface may be assigned multiple addresses of any type (unicast.) A. multicast).01A3 B. anycast. in which xx is the HSRP group. 0000.

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

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)

183

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
184

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

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

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

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

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. 192.Question No : 221 .255. 192.16.(Topic 5) Given an IP address 172.1. 192. what is the correct network address? 191 .28.56/26 B.240.168.252 with a subnet mask of 255. A new subnet with 60 hosts has been added to the network.64/26 D. Which subnet address should this network use to provide enough usable addresses while wasting the fewest addresses? A.1. 192. Therefore subnet bits are 2 bits (8-6) in fourth octet.0. 8bits+ 8bits+ 8bits + 2bits = /26 /26 bits subnet is 24bits + 11000000 = 24bits + 192 256 – 192 = 64 0 -63 64 – 127 Question No : 222 .1.56/27 C.168.168.(Topic 5) Refer to the exhibit.1.

2001:0000:130F::099a::12a B.254.16.0 Answer: A Explanation: For this example.16.0 C.16. ::1 B. with the first 127 bits being '0' and the 128th bit being '1'. Question No : 223 . 172.0.16.255.1 .(Topic 5) Which option is a valid IPv6 address? A. 2000::/3 D. the network address is 172.0 D. so could also be written as ::1/128.0 and the broadcast IP address is 172.172.A. 172.24.0. 2002:7654:A1AD:61:81AF:CCC1 C.16. FEC0:ABCD:WXYZ:0067::2A4 192 . :: C.16.16.(Topic 5) Which IPv6 address is the equivalent of the IPv4 interface loopback address 127.16. Question No : 224 . 172.31. 0::/10 Answer: A Explanation: In IPv6 the loopback address is written as. the network range is 172.28.0 B. ::1 This is a 128bit number.31. It's just a single address.1? A.0.16. 172.16.16.

16./20 C.0.0 – 172. The groups are separated by colons (:).0.16./21 B.0.0.0. An example of an IPv6 address is 2001:0db8:85a3:0000:0000:8a2e:0370:7334.16.0/18 Answer: B Explanation: The 172. 172. Question No : 225 .16. 2004:1:25A4:886F::1 Answer: D Explanation: An IPv6 address is represented as eight groups of four hexadecimal digits.16. each group representing 16 bits (two octets).D. 172./20 network is the best option as it includes all networks from 172. The /21 subnet will 193 .0.0.0. Which address range efficiently summarizes the routing table of the addresses for router Main? A.(Topic 5) Refer to the exhibit.16. The leading 0’s in a group can be collapsed using ::. 172. 172.0 and does it more efficiently than the /16 and /18 subnets. but this can only be done once in an IP address.0.0.16.16./16 D.

not include all the other subnets in this one single summarized address. what summary address would be sent from router A? A.x so our summarized subnet must be also in that form -> Only A.0 /16 Answer: A Explanation: Router A receives 3 subnets: 172. 172.0 /20 C.64.0/18. 172.x.0 /24 D.16.0.16. The smallest subnet mask of these 3 subnets is /18 so our summarized subnet must also 194 . In this VLSM addressing scheme.16. All these 3 subnets have the same form of 172.32.0 /16 E.0.128.(Topic 5) Refer to the exhibit.16. 172.0/24 and 172.0/18.0. 172.32.0 /17 F.0.16.64. B or .0. 172.0. Question No : 226 .0 /16 B.16. 172.16.32. 172.

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

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

The authentication process is done by the router or a central access server such as a TACACS+ or RADIUS server. Question No : 231 . You are asked to develop an IP addressing plan to allow the maximum number of subnets with as many as 30 hosts each. 10.31. which is nothing more than an acknowledged TRAP.188. etc. 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. SNMPv2 PDUs fixed this by introducing the notion of an INFORM.B Explanation: A TRAP is a SNMP message sent from one application to another (which is typically on a remote host).0/26 197 .(Topic 5) You are working in a data center environment and are assigned the address range 10.com/en/US/tech/tk583/tk822/technologies_tech_note09186a0080094524. SET Answer: A. Their purpose is merely to notify the other application that something has happened.31. The configuration of dynamic ACL can be read here: http://www.(Topic 5) What are the alert messages generated by SNMP agents called? A. INFORM C. Which IP address range meets these requirements? A. GET D.0/23.We can use a dynamic access list to authenticate a remote user with a specific username and password. has been noticed. shtml Question No : 230 .cisco. TRAP B.188.

the address is removed from the pool.31. Only the IP detected by Ping is removed from the pool. B. D.188.188. Answer: A Explanation: An address conflict occurs when two hosts use the same IP address. The address remains in the pool until the conflict is resolved.0/27 E. Which rule does the DHCP server use when there is an IP address conflict? A. The address is removed from the pool until the conflict is resolved. During address assignment.(Topic 5) Refer to the exhibit. DHCP checks for conflicts using ping and gratuitous ARP. 10.0/25 C. 10. 10. 198 . Also the question requires the maximum number of subnets (which minimum the number of hosts-per-subnet) so /27 is the best choice.188. The address will not be assigned until the administrator resolves the conflict. E.188.31. The IP will be shown. Question No : 232 .31.0/29 Answer: D Explanation: Each subnet has 30 hosts < 32 = 25 so we need a subnet mask which has at least 5 bit 0s -> /27.31. If a conflict is detected. C. even after the conflict is resolved. Only the IP detected by Gratuitous ARP is removed from the pool. 10.0/28 D.B.

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

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

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

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

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

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

0/24 Answer: C Explanation: The 172. 172.1.5.0/24 172.128/25 172.7.1.0/24 172.1.7.1. Question No : 242 .1.1.1.5.7.4. 172.0.(Topic 5) 205 .1.1.1.1. 172.1.0/25 172.1.0/24 172.0 – 172.255.4.4.0.4.Refer to the exhibit.6.4.0/22 subnet encompasses all routes from the IP range 172.1.0/22 B.6.0/24 172.0/24 172.4.0/21 C. What is the most efficient summarization that R1 can use to advertise its networks to R2? A. 172. 172.0/22 D.1.0/24 E.

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

The anycast packet in a LAN setting forwards the packet to the neighbor it learned about first. 255.(Topic 5) Which three are characteristics of an IPv6 anycast address? (Choose three.F Explanation: A new address type made specifically for IPv6 is called the Anycast Address.0 207 .0. delivery of packets to the group interface that is closest to the sending device Answer: B. 0. with each LAN containing 5 to 26 hosts? A.) A.(Topic 5) Which subnet mask would be appropriate for a network address range to be subnetted for up to eight LANs.240 B. 255.255. The nearest router or interface is found by using the metric of a routing protocol currently running on the network. one-to-many communication model B. any-to-many communication model D.252 C.255. These IPv6 addresses are global addresses.0.Question No : 244 . a unique IPv6 address for each device in the group E.255.E. However in a LAN setting the nearest interface is found depending on the order the neighbors were learned. these addresses can be assigned to more than one interface unlike an IPv6 unicast address. The sender creates a packet and forwards the packet to the anycast address as the destination address which goes to the nearest router.255. one-to-nearest communication model C. Question No : 245 . the same address for multiple devices in the group F. Anycast is designed to send a packet to the nearest interface that is a part of that anycast group.

B.255. For example. 255. port 5000). In general. Enabling Syslog on a router automatically enables NTP for accurate time stamping. While there are some exceptions. E.255.224 E. The Syslog server automatically notifies the network administrator of network problems. there are significantly more Syslog messages available within IOS as compared to SNMP Trap messages.(Topic 5) Which three statements about Syslog utilization are true? (Choose three. There are more Syslog messages available within Cisco IOS than there are comparable SNMP trap messages.) A. Utilizing Syslog improves network performance. a mask of 255. A Syslog server provides the storage space necessary to store log files without using router disk space. Question No : 246 . A syslog 208 . A Syslog server provides the storage space necessary to store log files without using router disk space.240 Answer: D Explanation: For a class C network. F. The Syslog receiver is commonly called "syslogd. A Syslog server helps in aggregation of logs and alerts." "Syslog daemon. Logging to a central syslog server helps in aggregation of logs and alerts." Syslog messages can be sent via UDP (port 514) and/or TCP (typically.2(18)SXF contains about 90 SNMP trap notification messages.255.224 will allow for up to 8 networks with 32 IP addresses each (30 usable)." or "Syslog server.255. such as SSL wrappers.D. a Cisco Catalyst 6500 switch running Cisco IOS Software Release 12.F Explanation: The Syslog sender sends a small (less than 1KB) text message to the Syslog receiver. D. Answer: C.255.D. this data is typically sent in clear text over the network. C. 255. Cisco devices can send their log messages to a UNIX-style syslog service. System logging is a method of collecting messages from devices to a server running a syslog daemon.255. but has more than 6000 Syslog event messages.

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

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

255.248. Reference: http://www.0 C. MAC address tracking.255. 255.0 B.255.cisco. Traps can mean improper user authentication.com/c/en/us/td/docs/switches/lan/catalyst2950/software/release/121_9_ea1/configuration/guide/scg/swsnmp. get C. 255.(Topic 5) Refer to the exhibit. loss of connection to a neighbor.254.252. or other significant events. Which subnet mask will place all hosts on Network B in the same subnet with the least amount of wasted addresses? A.html Question No : 251 . Traps are messages alerting the SNMP manager to a condition on the network. closing of a TCP connection. link status (up or down). response B. 255. capture Answer: C Explanation: An agent can send unsolicited traps to the manager.What SNMP message alerts the manager to a condition on the network? A.255. restarts.0 211 . 255.255. trap D.0 D.

e.255.255.255.0 B.Answer: B Explanation: 310 hosts < 512 = 29 -> We need a subnet mask of 9 bits 0 -> 1111 1111.255. 255.252.g. In IPv4 networks.255. 255. A routing prefix is the sequence of leading bits of an IP address that precede the portion of the address used as host identifier.0/24).0 Question No : 252 .192 F.(Topic 5) A national retail chain needs to design an IP addressing scheme to support a nationwide network.255. which is a bit mask covering the number of bits used in the prefix.255. 255..0000 0000 -> 255.255.255.1.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. 255.255. 255. Such subnets can be arranged hierarchically. the routing prefix is often expressed as a "subnet mask". Routers are used to manage traffic and constitute borders between subnets.1.0 D.0 is the subnet mask for the 192.128 C.0 network with a 24-bit routing prefix (192.224 E.0 Answer: B. Working with only one Class B address.) A. An IPv4 subnet mask is frequently expressed in quad-dotted decimal representation.255.248.1111 1111.168.255. The company needs a minimum of 300 sub-networks and a maximum of 50 host addresses per subnet.254. 255.1111 1110. with the organization's network address space (see also Autonomous System) partitioned into a tree-like structure. 212 .255.168. which of the following subnet masks will support an appropriate addressing scheme? (Choose two.

255. So 10.0/25 subnetted with mask 255.0/23 is the correct answer.0000 0000 /30 = 1111 1111. So our initial network should be 30 – 7 = 23. You can understand it more clearly when writing it in binary form: /23 = 1111 1111.10. 10.0.10.252 B.255.0/18 subnetted with mask 255.Question No : 253 .0.0/23 subnetted with mask 255. 10.10.(Topic 5) What are three features of the IPv6 protocol? (Choose three.1.1.252 D.0/24 subnetted with mask 255.10. complicated header 213 . Which IP addressing scheme defines the address range and subnet mask that meet the requirement and waste the fewest subnet and host addresses? A.255. 10.(Topic 5) The network administrator is asked to configure 113 point-to-point links.255. autoconfiguration C.255.255. 10.1111 1100 (borrow 7 bits) Question No : 254 .252 C.255.10.) A.0/16 subnetted with mask 255.0.252 E. no broadcasts D.0. The network used for point-to-point connection should be /30.252 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). optional IPsec B.255.10. 10.1111 1111.1111 1110.255.255.

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

informational B. emergency C.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 . What are three message types that will be sent to the Syslog server? (Choose three.D. critical E.(Topic 5) A network administrator enters the following command on a router: logging trap 3.) A. error Answer: B. debug F.Question No : 256 . warning D.

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

B. Critical D. but significant. Emergencies B.C. by using the “logging console warnings” command.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. errors. warnings will be displayed. Alerts C. 217 .A.(Topic 5) Refer to the exhibit. critical. Warnings Answer: A. alerts. Question No : 259 . For example. Errors E. 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. The lowest level is level 7. all the logging of emergencies. that level and all the higher levels will be displayed.

NAT eliminates the need to re-address all hosts that require external access.192/26 D.172.) A. B.172.16.48/26 B.3.) A. Network A .All of the routers in the network are configured with the ip subnet-zero command.3. Also.(Topic 5) What are two benefits of using NAT? (Choose two. Link A . NAT conserves addresses through host MAC-level multiplexing. Dynamic NAT facilitates connections from the outside of the network. 218 . Network A .16.16.16.16.D Explanation: Only a /30 is needed for the point to point link and sine the use of the ip subnet-zero was used.128/25 is the best. D. C.3. NAT facilitates end-to-end communication when IPsec is enabled.0/30 E. 172. Question No : 260 . Which network addresses should be used for Link A and Network A? (Choose two.16.172.112/30 Answer: B.3.16. Link A .172. Network A .3.128/25 C. valid option.3.172.3.40/30 F. Link A .172.3. a /25 is required for 120 hosts and again 172.16.0/30 is valid.

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

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

Question No : 263 . Answer: B. A dynamically learned MAC address is saved in the VLAN database. E. A dynamically learned MAC address is saved in the running-configuration file. Port security needs to be globally enabled. Port security needs to be configured to shut down the interface in the event of a violation. The port security configuration needs to be saved to NVRAM before it can become active. C. E. B. Statically configured MAC addresses are saved in the startup-configuration file if frames from that address are received. Port security needs to be configured to allow only one learned MAC address. B. Statically configured MAC addresses are saved in the running-configuration file if frames from that address are received. 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 Explanation: From the output we can see that port security is disabled so this needs to be enabled. C. Port security interface counters need to be cleared before using the show command. D.(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.two. F. the command switchport port-security mac-address 221 . Also. Port security needs to be enabled on the interface.) A. Answer: B Explanation: In the interface configuration mode. D. A dynamically learned MAC address is saved in the startup-configuration file.

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

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

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

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

0 0.168.147.0.168.148.0 0. when combined.0.255 226 . access-list 10 permit ip 192.C.168.168.0. 192.1.168.147. SW1#show running-config D.255.255 B.0 0.255. An example of the output of “show port-security interface” command is shown below: Question No : 268 . Which two ACL statements.149.1.168.168.146. to allow traffic from hosts on networks 192.255 D.0. SW1#show port-security interface FastEthernet 0/12 E.0 0.148.255 C.(Topic 6) A network administrator is configuring ACLs on a Cisco router.D Explanation: We can verify whether port security has been configured by using the “show runningconfig” or “show port-security interface” for more detail. would you use to accomplish this task? (Choose two. 192.146. SW1#show switchport port-security interface FastEthernet 0/12 Answer: C.149.0.168. access-list 10 permit ip 192. access-list 10 permit ip 192. and 192. access-list 10 permit ip 192.) A.0 only.0.0.

255.0.168.168.C Explanation: “access-list 10 permit ip 192.168.255.0 255.0 and 192. no ip access-class 102 out C.1.255” would allow only the 192.E.146.0 0. An attempt to deny web access to a subnet blocks all traffic from the subnet.148.0. no ip access-class 102 in B.168.0 0.168. and “access-list 10 permit ip 192.0.0.168.168.0 0.(Topic 6) Refer to the exhibit.0 networks.146. Which interface command immediately removes the effect of ACL 102? A.1.168.147. Question No : 269 .146.255” would allow only the 192.149. no ip access-group 102 in 227 .255 F. access-list 10 permit ip 192.0 and 192.148.0 networks.146.0 Answer: A. access-list 10 permit ip 192.

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

access list 101 deny tcp any host 192. B.1. access-list 110 permit ip any any B.1 D. D.1. Answer: D. E. access-list 50 deny 192.255 C. access-list 2500 deny tcp any host 192. The “access-group” command is only used to apply an access list to a physical interface -> C is not correct.168. Question No : 272 . Moreover. Enter an access list and apply it to the virtual terminal interfaces using the access-class command. C. 229 .Which item represents the standard IP ACL? A.168. The most simple way to secure the virtual terminal interface is to configure a username & password to prevent unauthorized login.0.0. To apply an access list to a virtual terminal interface we must use the “access-class” command.1 0.) A.E Explanation: It is a waste to administratively shut down the interface.1.1 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. someone can still access the virtual terminal interfaces via other interfaces -> We cannot physically secure a virtual interface because it is “virtual” ->. Configure a virtual terminal password and login process. Physically secure the interface. Create an access list and apply it to the virtual terminal interfaces with the access-group command.168. Administratively shut down the interface.(Topic 6) What can be done to secure the virtual terminal interfaces on a router? (Choose two.

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

3){source addr} to access finance server address (172.33.3 host D 192.33.2 host C 192. The Core connection uses an IP address of 198.242.18.168.168.242.65.22.22.33.242. The Finance Web Server is assigned an IP address of 172.242.22.168.Access to the router CLI can be gained by clicking on the appropriate host.1 192.33.17 172.22. Answer: Select the console on Corp1 router Configuring ACL Corp1>enable Corp1#configure terminal comment: To permit only Host C (192.3 host 172.33.22.23 eq 80 231 .33.196.1 host B 192.22.23) {destination addr} on port number 80 (web) Corp1(config)#access-list 100 permit tcp host 192.33. The computers in the Hosts LAN have been assigned addresses of 192.168.30.22.23.242.4 The servers in the Server LAN have been assigned addresses of 172.242.168.23 eq 80 comment: To deny any source to access finance server address (172.168.23) {destination addr} on port number 80 (web) Corp1(config)#access-list 100 deny tcp any host 172.168.168.254 host A 192. All passwords have been temporarily set to "cisco".33.242.

22.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.242.242. Step 3: Only Host C (192.33.(Topic 6) Which statement about access lists that are applied to an interface is true? A. Host opens a web browser page.172. B. 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. If the other host can also access then maybe something went wrong in your configuration.22.x 255.x.33. & D.242.22. You can apply only one access list on any interface.168.242.255. Step2: Click on each host A.168.x.255.x (removes incorrect configured ipaddress and subnet mask) Configure Correct IP Address and subnet mask: ip address 172.22.240 ( range of address specified going to server is given as 172.30 255.3) can access the Finance Web Server you can click on NEXT button to successfully submit the ACL SIM. Question No : 275 . Check whether you configured correctly and in order.x. Step 4: If only Host C (192. Corp1#copy running-config startup-config Verifying the Configuration: Step1: show ip interface brief command identifies the interface on which to apply access list.23) to test whether it permits /deny access to the finance web Server. 232 . You can place as many access lists as you want on any interface.3) has access to the server. Corp1(config)#interface fa 0/1 If the ip address configured already is incorrect as well as the subnet mask. This should be corrected in order ACL to work type this commands at interface mode : no ip address 192.x. B.30 ) Comment: Place the ACL to check for packets going outside the interface towards the finance web server.17 . Select address box of the web browser and type the ip address of finance web server (172. Corp1(config-if)#ip access-group 100 out Corp1(config-if)#end Important: To save your running config to startup before exit. C.

per direction and per interface. show ip interface E. per Layer 3 protocol. 233 . Question No : 277 . per direction.(Topic 6) When you are troubleshooting an ACL issue on a router. which command would you use to verify which interfaces are affected by the ACL? A. You can apply multiple access lists with the same protocol or in different directions.(Topic 6) Refer to the exhibit. show access-lists C. You can configure one access list. show ip access-lists B. D. Answer: C Explanation: We can have only 1 access list per protocol. show interface D. 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.C.

BackboneFast B. to prevent all hosts (except those whose addresses are the first and last IP of subnet 172. the ACL does not restrict anyone from the network. UplinkFast C. How can the ACL statements be re-arranged so that the system works as intended? A. B. Root Guard D.Statements A. it it best to begin with the most specific entries first. 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. BPDU Guard 234 . Then. DBAC D. But as is. in this cast the two hosts in line C and D.21.128/28) from accessing the network. include the subnet (B) and then finally the rest of the traffic (A). BADC C.1. even if a more specific of better match is found later on in the access list. C. and D of ACL 10 have been entered in the shown order and applied to interface E0 inbound. So. Question No : 278 .(Topic 6) Which Cisco Catalyst feature automatically disables the port in an operational PortFast upon receipt of a BPDU? A. ACDB B.

235 . 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. 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. it will be shut down to prevent a loop. Topic 7. 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. all other traffic should be allowed. Infrastructure Management Question No : 279 CORRECT TEXT . With BPDU Guard.E. No other hosts will have web access to the Finance Web Server.(Topic 7) A network associate is adding security to the configuration of the Corp1 router. BPDU Filter Answer: D Explanation: We only enable PortFast feature on access ports (ports connected to end stations). when a PortFast receives a BPDU. Since there are multiple resources for the corporation at this location including other resources on the Finance Web Server. No other hosts from the LAN nor the Core should be able to use a web browser to access this server.

3 Answer: Corp1#conf t Corp1(config)# access-list 128 permit tcp host 192.26 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 .1 192.168.168.168.1 host 172.168.240.22.(Topic 7) 236 .240.240.168.240.1 host B 192.240.240.65 The computers in the Hosts LAN have been assigned addresses of 192.247.18. The Core connection uses an IP address of 198.Access to the router CLI can be gained by clicking on the appropriate host. All passwords have been temporarily set to "cisco".26 eq www Corp1(config)# access-list 128 deny tcp any host 172.254 host A 192.22.168.141.141.2 host C 192.

SNMP B. WAN encapsulation Answer: A. Also bear in mind that the flows from aggregating large numbers of devices can add up.B. Services running on the device may also be affected. where Netflow data will be sent C. For example.) A. Cisco's performance testing seems to indicate that newer hardware can accommodate this load pretty well. WCCP D. IP SLA Answer: B 237 . but you will still want to check it out before you turn on the feature. Reference: http://searchenterprisewan.com/tip/How-the-NetFlow-protocolmonitors-your-WAN Question No : 281 . Netflow C. port availability E. CPU utilization B.(Topic 7) What Cisco IOS feature can be enabled to pinpoint an application that is causing slow network performance? A. Some symptoms of high CPU utilization are very large jitter and increased delay. 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.What are three factors a network administrator must consider before implementing Netflow in the network? (Choose three. Depending on how much traffic you have and how you configure it.C Explanation: NetFlow has a reputation for increasing CPU utilization on your network devices. SNMP version F.techtarget. Another thing to keep in mind is the amount of data you're going to be sending across the network. the traffic can be substantial. number of devices exporting Netflow data D.

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

239 .

240 .

241 .

There is an OSPF hello and dead interval mismatch.An OSPF neighbor adjacency is not formed between R3 in the main office and R6 in the Branch3 office. 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. the username is not configured on R3 and R6. There is a PPP authentication issue. C. B. What is causing the problem? A. D. 242 . There is an area ID mismatch. The R3 router ID is configured on R6.

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

244 .

245 .

246 .

247 .

1.1. The loopback interface is shut down on R5.Study the following output taken on R1: R1# Ping 10. timeout is 2 seconds: Packet sent with a source address of 10. The IP address that is configured on the Lo1 interface on R5 is incorrect. C.5.1.1 network. we see that the 10.1 Type escape sequence to abort.1.1.1.5.1 network 248 .5. When looking at the EIGRP configuration on R1. B. The network statement is missing on R5. The network statement is missing on R1. D.1 ……. Sending 5.1.1.5. 100-byte ICMP Echos to 10.55. Success rate is 0 percent (0/5) Why are the pings failing? A. Answer: C Explanation: R5 does not have a route to the 10. which is the loopback0 IP address of R1.55 source 10.

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

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

251 .

252 .

253 .

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

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

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

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

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

259 .

260 .

261 .

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

0.0 network.4.168.4.2.168.0.4. Routing protocol updates for the 10. D. D.255 any we can easily understand that this access list allows all traffic (ip) from 10. Hosts in network 192. Based on the output from RouterA. Interface S0/0 on RouterA is configured with an incorrect subnet mask.0 network would not be accepted from the fa0/0 interface. The IP address that is configured on S0/0 of RouterB is not in the correct subnet.3.0 are unable to reach hosts in network 192. what are two possible reasons for the failure? (Choose two.4. Interface S0/0 on RouterB is administratively down. F. C. The cable that is connected to S0/0 on RouterA is faulty.4.4.0. The encapsulation that is configured on S0/0 of RouterB does not match the encapsulation that is configured on S0/0 of RouterA. IP traffic would be passed through the interface but TCP and UDP traffic would not.0 0. Answer: B Explanation: From the output of access-list 114: access-list 114 permit ip 10.4. B.0/24 network Question No : 288 . E.4. Interface S0/0 on RouterA is not receiving a clock signal from the CSU/DSU. It would allow all traffic from the 10.(Topic 7) Refer to the exhibit. B. Attempts to telnet to the router would fail.A.) A. C. 263 .

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

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. If it works then the NIC card (layer 1. Verify IP configuration belongs to layer 3.com to assure that the far end server is not down (it sometimes make we think we can’t access to the Internet). We are using a URL so this step belongs to layer 7 of the OSI model. For example.com.1. the signal on the cable is acceptable… Next we “verify NIC operation”. checking if the IP can be assignable for host. For your information. “verify Ethernet cable connection” means that we check if the type of connection (crossover.0.The question asks us to “begin with the lowest layer” so we have to begin with Layer 1: verify physical connection. the RJ45 headers are plugged in. 2) and TCP/IP stack (layer 3) are working properly. rollover…) is correct. in this case an Ethernet cable connection. We do this by simply making a ping to the loopback interface 127.(Topic 7) Refer to the exhibit. 265 . Question No : 290 . straight-through.0. microsoft.

168.63 For the network 192.(Topic 7) Scenario Refer to the topology. E. respectively.1.1. Use the appropriate show commands to troubleshoot the issues. Your company has connected the routers R1. Question No : 291 . HostA is not on the same subnet as its default gateway. Assuming routing is properly configured.64 Broadcast address: 192.168.95 -> These two IP addresses don’t belong to the same network and they can’t see each other.168. and R3 with serial links.32 Broadcast address: 192. The EIGRP routing protocol is configured. 266 .1. C. R2 and R3 are connected to the switches SW1 and SW2. B. Answer: D Explanation: Now let’s find out the range of the networks on serial link: For the network 192.168.1. what is the cause of this problem? A.62/27: Increment: 32 Network address: 192. The serial interfaces of the routers are not on the same subnet.HostA cannot ping HostB. R2.1. SW1 and SW2 are also connected to the routers R4 and R5.1. The Fa0/0 interface on RouterB is using a broadcast address. You are required to troubleshoot and resolve the EIGRP issues between the various routers.168. The Fa0/0 interface on RouterA is on a subnet that can't be used. D. The address of SwitchA is a subnet address.168.65/27: Increment: 32 Network address: 192.

267 .

268 .

269 .

270 .

B.6/32 are not appearing in the routing table of R5. and the network command is missing on R4.0.AS numbers . Automatic summarization is enabled.0 network is displayed.4. The interfaces are shutdown. so only the 10. R4 has been incorrectly configured to be in another AS. The loopback addresses haven't been advertised. so they are not being advertised.4. so it does not peer with R5.4.4/32.Authentication method and key strings Here.The loopback interfaces on R4 with the IP addresses of 10.0. Answer: B Explanation: For an EIGRP neighbor to form.4. C. when it should be AS 1. D.5/32. we see that R4 is configured for EIGRP AS 2. 271 .Neighbors must be in the same subnet .4.K values . 10. Why are the interfaces missing? A. the following must match: . and 10.4.

during high traffic periods B.Question No : 292 . in an improperly implemented redundant topology E.(Topic 7) In which circumstance are multiple copies of the same unicast frame likely to be transmitted in a switched LAN? A. 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. 272 . It is an example of an improperly implemented redundant topology. after broken links are re-established C.

Configure the router per the following requirements: Name of the router is R2 Enable.176/28 . IP information 273 . Password In access user EXEC mode using the console is xxx 4.router has last assignable host address in the subnet. The password to allow telnet access to the router is xxx 5.0. the actual information will prevail. 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 .2. 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. Enable. Router protocol is RIPV2 Attention: In practical examinations. secret password is xxx 3.201. Name or the router is xxx 2.Question No : 293 CORRECT TEXT . 1. please note the following.(Topic 7) Central Florida Widgets recently installed a new router in their office. Interfaces should be enabled.router has fourth assignable host address in subnet Serial network is 192.165.

0 R2(config-router)#network 192. SW1 and SW2 are also connected to the routers R4 and R5.224 R2(config)#interface s0/0/0 R2(config-if)#ip address 192. Your company has connected the routers R1. The EIGRP routing protocol is configured.2.255. R2 and R3 are connected to the switches SW1 and SW2.(Topic 7) Scenario Refer to the topology. Use the appropriate show commands to troubleshoot the issues.165. You are required to troubleshoot and resolve the EIGRP issues between the various routers.255.240 R2(config-if)#no shutdown R2(config-if)#exit R2(config)#router rip R2(config-router)#version 2 R2(config-router)#network 209.201.2.190 255.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. R2.201.0.0.176 R2(config-router)#end R2#copy run start Question No : 294 .165. respectively. 274 .255. and R3 with serial links.4 255.255.

275 .

276 .

277 .

278 .

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

As you can see. they are both using e0/0.0 network: 280 .16.168. The IP addresses are in the 192.

source MAC address C.D. the “network 192. 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.) A. destination IP address F.0” command is missing on R6. ingress interface E. source IP address B. Question No : 295 . egress interface D.(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. IP next-hop Answer: A.But when we look at the EIGRP configuration.16.168.

protocol interface and class of service are grouped into a flow and then packets and bytes are tallied.determine if the packet is unique or similar to other packets.cisco. source/destination ports. A problem with network connectivity has been observed. Reference: http://www. an IP Flow is based on a set of 5 and up to 7 IP packet attributes. 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. What would be an effect of this 282 . 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. It is suspected that the cable connected to switch port Fa0/9 on Switch1 is disconnected.(Topic 7) Refer to the exhibit. Traditionally.html Question No : 296 .

Question No : 297 .cable being disconnected? A. Host B would not be able to access the server in VLAN9 until the cable is reconnected. The actual mechanics of how bridges communicate and how the STP algorithm works will be discussed at length in the following topics. The transfer of files from Host B to the server in VLAN9 would be significantly slower. Netflow B. connections between switches are assumed to be trunks. Host B would not be able to access the server in VLAN9. B. STP creates a loop-free tree structure consisting of leaves and branches that span the entire Layer 2 network. SNMP Answer: D Explanation: Sometimes. In addition. 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. Note that the terms bridge and switch are used interchangeably when discussing STP. C. unless otherwise indicated. WCCP C. 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. IP SLA D. You can determine the cause of high CPU use in a router by using the output of the show 283 . For less than a minute. Communication between VLAN3 and the other VLANs would be disabled. D. Then normal network function would resume.(Topic 7) Which protocol can cause overload on a CPU of a managed device? A.

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

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

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. 286 .

287 .

288 .

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

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 .

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

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

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

303 .

304 .

305 .

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

Remove access-group 106 in from interface fa0/0 and add access-group 115 in. C. Interface name C. Port numbers D.B.(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). D. Remove access-group 106 in from interface fa0/0 and add access-group 104 in.C. 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. L3 protocol type E.D Explanation: 307 . 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”. 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. IP address B. MAC address Answer: A. Question No : 308 .

an IP Flow is based on a set of 5 and up to 7 IP packet attributes.18.192.168. Traditionally. no routing protocol will be required) All passwords have been temporarily set to “cisco”. 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 . These attributes are the IP packet identity or fingerprint of the packet and determine if the packet is unique or similar to other packets.184. Functionality can be tested by clicking on the host provided for testing.110/29 inside local addresses .17 – 192.(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.184. The appropriate static routes have also been configured (since the company will be a stub network. Configuration information: router name – Weaver inside global addresses – 198.30/28 number of inside hosts – 14 308 .198.168.What is an IP Flow? Each packet that is forwarded within a router or switch is examined for a set of IP packet attributes.100.105 .100. 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.18.

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.184. Overload keyword allows to map multiple IP addresses to a single registered IP address 309 .18.15 Establish dynamic source translation.255. Weaver(config)#ip nat inside source list 1 pool mypool overload This command translates all source addresses that pass access list 1.184.184.255.105 198. 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.100.105 to 198.18.184.18.17 – 192.168.18.105 198.16 0.184.105 to 198. Weaver(config)#access-list 1 permit 192. Answer: The company has 14 hosts that need to access the internet simultaneously but we just have 6 public IP addresses from 198.18.100.100.30.18.168.184.110. The ISP has provided the company six public IP addresses of 198.110).184.100. which means a source address from 192.110/29.17 to 192. specifying the access list that was defined in the prior step.100.168.0.0.18.168.168.30.A network associate is configuring a router for the weaver company to provide internet access.18.110 netmask 255.184. Weaver(config)#ip nat pool mypool 198. The hosts in the company LAN have been assigned private space addresses in the range of 192. into an address from the pool named mypool (the pool contains addresses from 198.

what is the cause of this problem? A. This is how to configure the NAT inside and NAT outside. 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. 310 . 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. The OSPF area is not configured properly. The graphic shows the output of the show ip ospf interface e0 command for routers R1 and R2.2.114 Question No : 310 . C.0. The cost on R1 should be set higher.2.(many-to-one) by using different ports. The question said that appropriate interfaces have been configured for NAT inside and NAT outside statements. Based on the information in the graphic. The routers cannot establish an adjacency relationship on their common Ethernet link.114 The ping should work well and you will be replied from 192. The priority on R1 should be set higher.0.(Topic 7) A network administrator is troubleshooting the OSPF configuration of routers R1 and R2. B.

winipcfg F. show ip route E.D. The hello and dead timers are not configured properly. show ip route. and show interfaces are all valid troubleshooting IOS commands.(Topic 7) Scenario Refer to the topology. Question No : 311 .(Topic 7) Which router IOS commands can be used to troubleshoot LAN connectivity problems? (Choose three. The dead interval is also set to 20 on R1 but it is 40 on R2. ping B. not IOS. F.D. 311 . E. Question No : 312 . The OSPF process ID numbers must match.F Explanation: Ping. A backup designated router needs to be added to the network. 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.) A. show interfaces Answer: A. ipconfig D. tracert C. and winipcfg are PC commands. Answer: D Explanation: In OSPF. Tracert. ipconfig. 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. 312 .

313 .

314 .

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

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

SW1 and SW2 are also connected to the routers R4 and R5. You are required to troubleshoot and resolve the EIGRP issues between the various routers.(Topic 7) Scenario Refer to the topology. 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 . Your company has connected the routers R1. R2 and R3 are connected to the switches SW1 and SW2. The EIGRP routing protocol is configured. R2. and R3 with serial links. Use the appropriate show commands to troubleshoot the issues. 317 .monitor cache. For example. respectively.

318 .

319 .

320 .

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

5.) 322 . Then. The network shown in the diagram is experiencing connectivity problems.(Topic 7) Refer to the exhibit.5.5 and 10. Which of the following will correct the problems? (Choose two.Answer: A Explanation: Using the “show ip int brief command” on R5 we can see the IP addresses assigned to this router.5. using the “show ip route” command on R1 we can see that to reach 10. Question No : 315 .55 the preferred path is via Serial 1/3. which we see from the diagram is the link to R2.5.

C.1. Configure the IP address of Host A as 10. B. E.1.1. Mixed Questions Question No : 316 .1. Their upload speed is about 10 percent of their download speed. F.2.2.1.255.2 -.) A.1.1.(Topic 8) What are three characteristics of satellite Internet connections? (Choose three.126 Mask : 255.254 The IP information of member Host B in VLAN2 is as follows: Address : 10.10.2. Configure the masks on both hosts to be 255.1.0 Gateway : 10.254.254 The configuration of sub-interface on router 2 is as follows: Fa0/0. Answer: B.1.1.255.A. D. The layer3 addressing information of Host B should be modified as follows: Address : 10.1.1.2.255.2.X Mask : 255.240.1.10.12 Mask : 255.255.2.255. They are frequently used by rural users without access to other high-speed connections. They are usually at least 10 times faster than analog modem connections.255. Configure the gateway on Host B as 10. B. D.224.0 Topic 8.1 -.1.254/24 VLAN2 It is obvious that the configurations of the gateways of members in VLAN2 and the associated network segments are wrong.255.255. 323 .1.254/24 VLAN1 Fa0/0.2.1.255. They are usually faster than cable and DSL connections.1.D Explanation: The switch 1 is configured with two VLANs: VLAN1 and VLAN2.0 Gateway : 10. The IP information of member Host A in VLAN1 is as follows: Address : 10. Configure the IP address of Host B as 10. Configure the gateway on Host A as 10.255. Configure the masks on both hosts to be 255. C.1.

They require a WiMax tower within 30 miles of the user location. Other types of access from host C to the Finance Web Server should be blocked.168.C Question No : 317 CORRECT TEXT .18.1 – 192.1 host B 192. You have been tasked to create and apply a numbered access list to a single outbound interface. The computers in the Hosts LAN have been assigned addresses of 192.209. Access to the router CLI can be gained by clicking on the appropriate host.78. All hosts in the Core and on local LAN should be able to access the Public Web Server. F.168. All passwords have been temporarily set to “cisco”.168.3 host D 192.2 host C 192. 324 .22. All access from hosts in the Core or local LAN to the Finance Web Server should be blocked.78. Answer: A.146.22.(Topic 8) A corporation wants to add security to its network.78. They use radio waves to communicate with cellular phone towers.65.B.78.4 The Finance Web Server has been assigned an address of 172.168.78. The Public Web Server in the Server LAN has been assigned an address of 172. The Core connection uses an IP address of 198. This access list can contain no more than three statements that meet these requirements.E.17.168.168.78.254. host A 192.18. The requirements are: Host C should be able to use a web browser (HTTP) to access the Finance Web Server.146.

325 .

326 .

To see which interface this is.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.34 PM.png 327 .24. use the “show ip int brief” command: Macintosh HD:Users:danielkeller:Desktop:Screen Shot 2015-11-17 at 3.

17 Our last instruction is to allow all hosts in the Core and on the local LAN access to the Public Web Server (172. Corp1#configure terminal Our access-list needs to allow host C – 192. Then.17 via HTTP (port 80).22.109. we know that the servers are located on the fa0/1 interface.17 to check if you are allowed to access Finance Web Server or not. This can be accomplished with one command (which we need to do as our ACL needs to be no more than 3 lines long). repeat to make sure they can reach the public server at 172. our next two instructions are these: Other types of access from host C to the Finance Web Server should be blocked.18 any Finally.168.17 eq 80 Then. Finally.109.22.109.125. B and D) and check to make sure you can’t access Finance Web Server from these hosts. so we will place our numbered access list here in the outbound direction.3 host 172.22.22. To verify. Click on other hosts (A. If your configuration is correct then you can access it.From this.22.109. 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.18.109. save the configuration Corp1(config-if)#end Corp1#copy running-config startup-config 328 . so our first line is this: Corp1(config)#access-list 100 permit tcp host 192.18) Corp1(config)#access-list 100 permit ip host 172.22.109.168125.3 to the Finance Web Server 172. In the address box type http://172.109. blocking all other access to the finance web server: Corp1(config)#access-list 100 deny ip any host 172. just click on host C to open its web browser.22. All access from hosts in the Core or local LAN to the Finance Web Server should be blocked.

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

It provides stability for the OSPF process on RouterB. D.A. It ensures that data will be forwarded by RouterB. the highest IP address of all active router’s physical interfaces will be chosen. C. It indicates that RouterB should be elected the DR for the LAN.1. It decreases the metric for routes that are advertised from RouterB.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. It specifies that the router ID for RouterB should be 10. -> The loopback interface will be chosen as the router ID of RouterB – 330 . Answer: B. B.0. E.+ If a loopback interface is not defined.

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

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

0. The full representation of eight 4-digit groups may be simplified by several techniques. Leading zeroes Leading zeroes in a group may be omitted.(Topic 8) In which two formats can the IPv6 address fd15:0db8:0000:0000:0700:0003:400F:572B be written? (Choose two.0. router(config)#ip route 0.[1] Thus. 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 (::).0 0.) A. router(config-router)#default-information originate D. each group representing 16 bits (two octets). but IETF recommendations suggest the use of lower case letters. router(config-router)#default-information originate always Answer: A Question No : 327 . An example of an IPv6 address is: 2001:0db8:85a3:0000:0000:8a2e:0370:7334 The hexadecimal digits are case-insensitive.0 255.0. router(config)#ip route 0. fd15:db8::700:3:400F:572B Answer: D.[1] Thus. fd15:0db8:0000:0000:700:3:400F:527B B.255.255 GigabitEthernet0/1 C.A. The groups are separated by colons (:).0.255. the example address can be further simplified: 2001:db8:85a3::8a2e:370:7334 333 .E Explanation: An IPv6 address is represented as eight groups of four hexadecimal digits. fd15:db8:0::700:3:4F:527B D.0. eliminating parts of the representation. fd15::db8::700:3:400F:527B C.0 GigabitEthernet0/1 B. fd15:0db8::7:3:4F:527B E.0.

C Question No : 329 .) A. Routes are updated when a change in topology occurs. It simultaneously delivers multiple streams of data. Question No : 330 . It uses a minimum amount of network bandwidth.(Topic 8) Which three statements about link-state routing are true? (Choose three.Question No : 328 . D. 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. Answer: D. C. Updates are sent to a broadcast address. It burdens the source host without affecting remote hosts. OSPF is a link-state protocol. It is the most efficient way to deliver data to multiple receivers. B. F. It is bandwidth-intensive. stock quotes. and news. Applications that take advantage of multicast include video conferencing. Updates are sent to a multicast address by default.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. resulting in the most efficient delivery of data to multiple receivers.(Topic 8) Which two statements about IPv4 multicast traffic are true? (Choose two. distance learning. corporate communications. RIP is a link-state protocol. E. D. Answer: A. C.(Topic 8) 334 . IP multicast delivers application source traffic to multiple receivers without burdening the source or the receivers while using a minimum of network bandwidth.B. and distribution of software. E.) A. It uses split horizon. B.

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

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

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

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

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

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

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

bin C. Router> boot flash:c180x-adventerprisek9-mz-124-6T.(Topic 8) Which command can you enter to display duplicate IP addresses that the DHCP server assigns? A. D.C Question No : 347 .2.2. It can lead to overloaded resources on the router. Router(config)# boot system flash c4500-p-mz.(Topic 8) Which command can you execute to set the user inactivity timer to 10 seconds? 342 .bin F. Router(config)#boot system rom c7301-advipservicesk9-mz.12 Answer: A Question No : 348 . Router(config)# boot system tftp c7300-js-mz.122-23f. Answer: A Question No : 346 . show ip dhcp conflict 10. It prevents the correct translation of IP addresses on the inside network. show ip dhcp database 10.124-24.bin Answer: A.What is the danger of the permit any entry in a NAT access list? A. Router(config)#boot bootldr bootflash:c4500-jk9s-mz.12 B. show ip dhcp server statistics D.2. C.B.) A.0.bin E.12 C.0.(Topic 8) Which three commands can you use to set a router boot image? (Choose three.bin D.122-33. Router(config)#boot flash:c180x-adventerprisek9-mz-124-6T.0.SB8a. It can disable the overload command. show ip dhcp binding 10. B.bin B. It can cause too many addresses to be assigned to the same interface.121-20.T4.

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

ping D.16.1. Switch#show interface vlan 20 D. telnet C.(Topic 8) Which command can you enter to verify that a 128-bit address is live and responding? A.0/24 344 . 172.1.5/32? A. Router#show ip interface brief Answer: A Question No : 353 .(Topic 8) After you configure the Loopback0 interface. 172.0/25 C.(Topic 8) What is the correct routing match to reach 172. traceroute B.0/26 B. Router#show ip interface loopback 0 B. which command can you enter to verify the status of the interface and determine whether fast switching is enabled? A.1.16. Router#show run C. 172.1.16.16. Switch#show ip interface vlan 20 Answer: A Question No : 351 .A. Switch#show ip interface brief C. ping ipv6 Answer: C Question No : 352 . Switch#show vlan id 20 B. Router#show interface loopback 0 D.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

intra-VLAN routing using a Layer 3 switch Answer: A Question No : 394 . intra-VLAN routing using router on a stick D.(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.(Topic 8) If a router has four interfaces and each interface is connected to four switches. CARP Answer: A Question No : 393 . 1 B. vty password D. inter-VLAN routing using a Layer 2 switch C. 2 C. 4 D. enable secret password C.) A. how many broadcast domains are present on the router? A. inter-VLAN routing using a Layer 3 switch B. aux password 360 .C.(Topic 8) Which technology can enable multiple VLANs to communicate with one another? A. GLBP D. tty password B. 8 Answer: C Question No : 395 .

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

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

RSTP C. PVST+ D.168.0.0 GigabitEthernet0/1 B.A.0. router(config)#ip route 0.0 255.0.0 255.(Topic 8) Which command can you enter to route all traffic that is destined for 192.0 GigabitEthernet0/1 Answer: A 363 .255.255. show ip interface brief B.0/20 to a specific interface? A. show vlan C.255. show interfaces D. Mono Spanning Tree Answer: A Question No : 400 . router(config)#ip route 192.0.168. router(config)#ip route 192.0.168. router(config)#ip route 0. show interface switchport Answer: A Question No : 401 .0.0 0.0 GigabitEthernet0/1 C.0.0 GigabitEthernet0/1 D.240.255. MSTP B.0.0 255.(Topic 8) Which command can you enter to determine whether a switch is operating in trunking mode? A.255.0.

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