IPv6 Questions

Question

Which of the following options is a valid IPv6 address?

A. 1731:0:909F::9D0:876B:130D
B. 2111:0D08:0000:121F:0000:0000:09GC:150B
C. 2011:0CA8:0:130H::87D:141C
D. 2031::130F::9D0:176A:386B

Answer: A

Explanation

Answer B is not correct because it has a letter “G”.
Answer C is not correct because it has a letter “H”.
Answer D is not correct because it has two “::”.

Question

What is the advantage of IPv6 packet processing over IPv4 packet processing?

A. variable header size
B. fixed header size
C. less header size
D. header size is always 34 bits

Answer: B

Explanation

The IPv6 header is always present and is a fixed size of 40 bytes which reduces router processing.

Question

Which of the following statements are correct about IPv6? (Choose two)

A. Multicasts have been eliminated and replaced with broadcasts
B. Broadcasts have been eliminated and replaced with multicasts
C. Each router interface can only be assigned with one IPv6 address
D. IPv6 addresses do not have subnet mask part
E. An IPv6 address consists of 128 bits

Answer: B E

Question 9

Which command is used to enable IPv6 forwarding on a Cisco router?

A. IPv6 routing-update
B. IPv6 unicast-routing
C. IPv6 enable
D. IPv6 start

Answer: B

Explanation

An example of configuring RIPng (similar to RIPv2 but is used for IPv6) is shown below:

Router(config)#ipv6 unicast-routing (Enables the forwarding of IPv6 unicast datagrams globally on the router)
Router(config)#interface fa0/0
Router(config-if)#ipv6 rip 9tut enable (9tut is the process name of this RIPng)