IPv6 problems
- 1. Which of the following is true when describing an anycast address?
Options- A. Packets addressed to a unicast address are delivered to a single interface.
- B. Packets are delivered to all interfaces identified by the address. This is also called one-to-many addresses.
- C. This address identifies multiple interfaces and the anycast packet is only delivered to one address. This address can also be called one-to-one-of-many.
- D. These addresses are meant for nonrouting purposes, but they are almost globally unique so it is unlikely they will have an address overlap. Discuss
Correct Answer: This address identifies multiple interfaces and the anycast packet is only delivered to one address. This address can also be called one-to-one-of-many.
Explanation:
Anycast addresses identify multiple interfaces, which is the same as multicast; however, the big difference is that the anycast packet is only delivered to one address, the first one it finds defined in the terms of routing distance. This address can also be called one-to-one-of-many.
- 2. Which of the following is true when describing a link-local address?
Options- A. Packets addressed to a unicast address are delivered to a single interface.
- B. These are your typical publicly routable addresses, just like a regular publicly routable address in IPv4.
- C. These are like private addresses in IPv4 in that they are not meant to be routed.
- D. These addresses are meant for nonrouting purposes, but they are almost globally unique so it is unlikely they will have an address overlap. Discuss
Correct Answer: These are like private addresses in IPv4 in that they are not meant to be routed.
Explanation:
Link-local addresses are meant for throwing together a temporary LAN for meetings or a small LAN that is not going to be routed but needs to share and access files and services locally.
- 3. Which statement(s) about IPv6 addresses are true?
- Leading zeros are required.
- Two colons (::) are used to represent successive hexadecimal fields of zeros.
- Two colons (::) are used to separate fields.
- A single interface will have multiple IPv6 addresses of different types.
Options- A. 1 and 3
- B. 2 and 4
- C. 1, 3 and 4
- D. All of the above Discuss
Correct Answer: 2 and 4
Explanation:
In order to shorten the written length of an IPv6 address, successive fields of zeros may be replaced by double colons. In trying to shorten the address further, leading zeros may also be removed. Just as with IPv4, a single device's interface can have more than one address; with IPv6 there are more types of addresses and the same rule applies. There can be link-local, global unicast, and multicast addresses all assigned to the same interface.
- 4. Which of the following is true when describing a unicast address?
Options- A. Packets addressed to a unicast address are delivered to a single interface.
- B. These are your typical publicly routable addresses, just like a regular publicly routable address in IPv4.
- C. These are like private addresses in IPv4 in that they are not meant to be routed.
- D. These addresses are meant for nonrouting purposes, but they are almost globally unique so it is unlikely they will have an address overlap. Discuss
Correct Answer: Packets addressed to a unicast address are delivered to a single interface.
Explanation:
Packets addressed to a unicast address are delivered to a single interface. For load balancing, multiple interfaces can use the same address.
- 5. To enable EIGRP, which of the following would you use?
- Router1(config-if)# ipv6 ospf 10 area 0.0.0.0
- Router1(config-if)# ipv6 router rip 1
- Router1(config)# ipv6 router eigrp 10
- Router1(config-rtr)# no shutdown
- Router1(config-if)# ipv6 eigrp 10
Options- A. 1, 3 and 5
- B. 3, 4 and 5
- C. 1 and 3
- D. 5 only Discuss
Correct Answer: 3, 4 and 5
Explanation:
Unlike RIPng and OSPFv3, you need to configure EIGRP both from global configuration mode and from interface mode, and you have to enable the command with the
no shutdown command.
- 6. What multicast addresses does EIGRPv6 use?
Options- A. FF02::A
- B. FF02::9
- C. FF02::5
- D. FF02::6 Discuss
Correct Answer: FF02::A
Explanation:
EIGRPv6's multicast address stayed very near the same. In IPv4 it was
224.0.0.10; now it is
FF02::A (A=10 in hexadecimal notation).
- 7. What multicast addresses does RIPng use?
Options- A. FF02::A
- B. FF02::9
- C. FF02::5
- D. FF02::6 Discuss
Correct Answer: FF02::9
Explanation:
RIPng uses the multicast IPv6 address of
FF02::9. If you remember the multicast addresses for IPv4, the numbers at the end of each IPv6 address are the same.
- 8. Which of the following is true when describing a unique local address?
Options- A. Packets addressed to a unicast address are delivered to a single interface.
- B. These are your typical publicly routable addresses, just like a regular publicly routable address in IPv4.
- C. These are like private addresses in IPv4 in that they are not meant to be routed.
- D. These addresses are meant for nonrouting purposes, but they are almost globally unique so it is unlikely they will have an address overlap. Discuss
Correct Answer: These addresses are meant for nonrouting purposes, but they are almost globally unique so it is unlikely they will have an address overlap.
Explanation:
These addresses are meant for nonrouting purposes like link-local, but they are almost globally unique so it is unlikely they will have an address overlap. Unique local addresses were designed as a replacement for site-local addresses.
- 9. Which statement(s) about IPv4 and IPv6 addresses are true?
- An IPv6 address is 32 bits long, represented in hexidecimal.
- An IPv6 address is 128 bits long, represented in decimal.
- An IPv4 address is 32 bits long, represented in decimal.
- An IPv6 address is 128 bits long, represented in hexidecimal.
Options- A. 1 and 3 only
- B. 2 only
- C. 3 and 4
- D. 2 and 4 Discuss
Correct Answer: 3 and 4
Explanation:
IPv4 addresses are 32 bits long and are represented in decimal format. IPv6 addresses are 128 bits long and represented in hexadecimal format.
- 10. To enable RIPng, which of the following would you use?
Options- A. Router1(config-if)# ipv6 ospf 10 area 0.0.0.0
- B. Router1(config-if)# ipv6 router rip 1
- C. Router1(config)# ipv6 router eigrp 10
- D. Router1(config-rtr)# no shutdown
- E. Router1(config-if)# ipv6 eigrp 10 Discuss
Correct Answer: Router1(config-if)# ipv6 router rip 1
Explanation:
It's pretty simple to enable RIPng for IPv6. You configure it right on the interface where you want RIP to run with the ipv6 router rip number command.
Programming
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