IBPS IT SO Study material- Computer Networks-IPv6

IBPS IT SO Study material- Computer Networks

IPv6

1. The size of IP address in IPv6 is
a) 4bytes
b) 128bits
c) 8bytes
d) 100bits

Answer: b
Explanation: An IPv6 address is 128 bits long.

2. The header length of an IPv6 datagram is _____.
a) 10bytes
b) 25bytes
c) 30bytes
d) 40bytes

Answer: d
Explanation: IPv6 datagram has fixed header length of 40bytes, which results is faster processing of the datagram.

3. In the IPv6 header,the traffic class field is similar to which field in the IPv4 header?
a) Fragmentation field
b) Fast-switching
c) ToS field
d) Option field

Answer: c
Explanation: This field enables to have different types of IP datagram.

4. IPv6 doesnot use ______ type of address
a) Broadcast
b) Multicast
c) Anycast
d) None of the mentioned

Answer: a
Explanation: Broadcast has been eliminated in IPv6.

5. These are the features present in IPv4 but not in IPv6.
a) Fragmentation
b) Header checksum
c) Options
d) All of the mentioned

Answer: d
Explanation: All the features are only present in IPv4 and not IPv6.

6. The ____ field determines the lifetime of IPv6 datagram
a) Hop limit
b) TTL
c) Next header
d) None of the mentioned

Answer: a
Explanation: The Hop limit value is decremented by one by a router when the datagram is forwaded by the router. When the value becomes zero the datagram is discarded.

7. Dual-stack approach refers to
a) Implementing Ipv4 with 2 stacks
b) Implementing Ipv6 with 2 stacks
c) Node has both IPv4 and IPv6 support
d) None of the mentioned

Answer: c
Explanation: dual-stack is one of the approach used to support IPv6 in already existing systems.

8. Suppose two IPv6 nodes want to interoperate using IPv6 datagrams but are connected to each other by intervening IPv4 routers. The best solution here is
a) use dual-stack approach
b) Tunneling
c) No solution
d) Replace the system

Answer: b
Explanation: The IPv4 routers can form a tuunel.

9. Teredo is an automatic tunneling technique. In each client the obfuscated IPv4 address is represented by bits
a) 96 to 127
b) 0 to 63
c) 80 to 95
d) 64 to 79

Answer: a
Explanation: Bits 96 to 127 in the datagram represents obfuscated 1Pv4 address.

All the best for your exams @Mission IT SO 2016