IPv6 Questions and Answers updated daily – Networking



10 IPv6 Questions and answers section with explanation for various online exam preparation, various interviews, Networking IPv6 online test. IPv6 Questions with detailed description, explanation will help you to master the topic.

IPv6 Questions

1. Which of the following is true when describing a link-local address?



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Correct Ans: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.


2.
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 



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Correct Ans: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.


3. What multicast addresses does EIGRPv6 use?



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Correct Ans: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).


4.
What two multicast addresses does OSPFv3 use?

FF02::A
FF02::9
FF02::5
FF02::6



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Correct Ans:3 and 4
Explanation:
Adjacencies and next-hop attributes now use link-local addresses, and OSPFv3 still uses multicast traffic to send its updates and acknowledgments with the addresses FF02::5 for OSPF routers and FF02::6 for OSPF designated routers. These are the replacements for 224.0.0.5 and 224.0.0.6, respectively.


5. Which of the following is true when describing a global unicast address?



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Correct Ans:These are your typical publicly routable addresses, just like a regular publicly routable address in IPv4.
Explanation:
Unlike unicast addresses, global unicast addresses are meant to be routed.


6. To enable RIPng, which of the following would you use?



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Correct Ans: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.


7.
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.



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Correct Ans: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.


8.
What multicast addresses does RIPng use?



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Correct Ans: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.


9.
Which of the following is true when describing a unicast address?



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Correct Ans: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.


10. Which of the following is true when describing a multicast address?



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Correct Ans:Packets are delivered to all interfaces identified by the address. This is also called a one-to-many address.
Explanation:
Packets addressed to a multicast address are delivered to all interfaces identified by the multicast address, the same as in IPv4. It is also called a one-to-many address. You can always tell a multicast address in IPv6 because multicast addresses always start with FF



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