QUESTION 81

Which three are characteristics of an IPv6 anycast address? (Choose three.)
A. one-to-many communication model
B. one-to-nearest communication model
C. any-to-many communication model
D. a unique IPv6 address for each device in the group
E. the same address for multiple devices in the group
F. delivery of packets to the group interface that is closest to the sending device
Answer: BEF
Explanation:
A new address type made specifically for IPv6 is called the Anycast Address. These IPv6 addresses
are global addresses, these addresses can be assigned to more than one interface unlike an IPv6
unicast address. Anycast is designed to send a packet to the nearest interface that is apart of that
anycast group.
The sender creates a packet and forwards the packet to the anycast address as the destination
address which goes to the nearest router. The nearest router or interface is found by using the
metric of a routing protocol currently running on the network. However in a LAN setting the nearest
interface is found depending on the order the neighbors were learned. The anycast packet in a LAN
setting forwards the packet to the neighbor it learned about first.
QUESTION 82
A national retail chain needs to design an IP addressing scheme to support a nationwide network.
The company needs a minimum of 300 sub-networks and a maximum of 50 host addresses per
subnet. Working with only one Class B address, which of the following subnet masks will support an
appropriate addressing scheme? (Choose two.)
A. 255.255.255.0
B. 255.255.255.128
C. 255.255.252.0
D. 255.255.255.224
E. 255.255.255.192
F. 255.255.248.0
Answer: BE
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. Such subnets can be arranged hierarchically,
with the organization’s network address space (see also Autonomous System) partitioned into a
tree-like structure. Routers are used to manage traffic and constitute borders between subnets. A
routing prefix is the sequence of leading bits of an IP address that precede the portion of the address
used as host identifier. In IPv4 networks, the routing prefix is often expressed as a “subnet mask”,
which is a bit mask covering the number of bits used in the prefix. An IPv4 subnet mask is frequently
expressed in quad-dotted decimal representation, e.g., 255.255.255.0 is the subnet mask for the
192.168.1.0 network with a 24-bit routing prefix (192.168.1.0/24).
QUESTION 83
Refer to the exhibit. A network administrator is adding two new hosts to Switch A . Which three
values could be used for the configuration of these hosts? (Choose three.)
A. host A IP address: 192.168.1.79
B. host A IP address: 192.168.1.64
C. host A default gateway: 192.168.1.78
D. host B IP address: 192.168.1.128
E. host B default gateway: 192.168.1.129
F. host B IP address: 192.168.1.190

Answer: ACF

but this can only be done once in an IP address. 2001:0db8:0000:130F:0000:0000:08GC:140B B./20 network is the best option as it includes all networks from 172. The /21 subnet will not include all the other subnets in this one single summarized address. use the “ipv6 address” command and specify the IP address you wish to use. FE81::280f:512b:e14f:3d69 .0.0. 172. 2031:0:130F::9C0:876A:130B Answer: D Explanation: An IPv6 address is represented as eight groups of four hexadecimal digits.16. An example of an IPv6 address is 2001:0db8:85a3:0000:0000:8a2e:0370:7334.16. FF02::2 C./20 C.16. each group representing 16 bits (two octets).16.0 – 172.0/18 Answer: B Explanation: The 172. ipv6 address PREFIX_1 ::1/64 D. The groups are separated by colons (:).0 and does it more efficiently than the /16 and /18 subnets./16 D.0.16. 172. 2001:0db8:0:130H::87C:140B C. 172. FE80::380e:611a:e14f:3d69 B. 2031::130F::9C0:876A:130B D.0. FF02::3 D.0.16. 172.0.0.0. QUESTION 88 Which of these represents an IPv6 link-local address? A. The leading 0’s in a group can be collapsed using ::. 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 85 Refer to the exhibit.16. FF02::1 B. QUESTION 86 Which IPv6 address is valid? A. ipv6 address 2001:db8:2222:7272::72/64 C./21 B. ipv6 autoconfig 2001:db8:2222:7272::72/64 B.0.16.QUESTION 84 Which IPv6 address is the all-router multicast group? A.0. Which address range efficiently summarizes the routing table of the addresses for router Main? A. QUESTION 87 Which command can you use to manually assign a static IPv6 address to a router interface? A. ipv6 autoconfig Answer: B Explanation: To assign an IPv6 address to an interface.

0/23 subnetted with mask 255.10. It is now ready to find and load an IOS image.252 B. So 10.0/24 subnetted with mask 255. 10.255. It loads the first image file in flash memory.255.252 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).255. C.10.0.255.1. Which IP addressing scheme defines the address range and subnet mask that meet the requirement and waste the fewest subnet and host addresses? A.1111 1110.1.0. The network used for point-to-point connection should be /30.C.1111 1111.10.local unicast addressing. Answer: A Explanation: Default (normal) Boot SequencePower on Router – Router does POST – Bootstrap starts IOS load – Check configuration registerto see what mode the router should boot up in (usually 0x2102 to read startup-config in NVRAM / or 0x2142 to start in “setup-mode”) – check the startup-config file in NVRAM for boot-system commands – load IOS from Flash. You can understand it more clearly when writing it in binary form: /23 = 1111 1111.255.10.0.255.252 C.252 E.10. FEFE:0345:5f1b::e14d:3d69 D.255.0000 0000 /30 = 1111 1111. The actual link local addresses are assigned with the prefix fe80::/64. It checks the configuration register. They may be assigned by automatic (stateless) or stateful (e. What function does the router perform next? A.255.255. 10. B. manual) mechanisms. It attempts to boot from a TFTP server. 10.0/16 subnetted with mask 255.0/25 subnetted with mask 255. FE08::280e:611:a:f14f:3d69 Answer: A Explanation: In the Internet Protocol Version 6 (IPv6). QUESTION 89 The network administrator is asked to configure 113 point-to-point links.1111 1100 (borrow 7 bits) QUESTION 90 A Cisco router is booting and has just completed the POST process. 10. So our initial network should be 30 ?7 = 23.g.0/18 subnetted with mask 255. It inspects the configuration file in NVRAM for boot instructions.10.0/23 is the correct answer. D.0. the address block fe80::/10 has been reserved for link.255.252 D. . 10.

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