What is a typical length of IPv6 header?

A.
48bits.

B.
320 bits.

C.
160 bits.

D.
1024 bits.

Explanation:
The header of an Ipv6 header is fixed at 40 octets, which is 8×40=320 bits in size.
Incorrect Answers:
A: 48 Bits is two small for an Ipv6 header, especially when you consider that the header has to
hold a source and destination address of 128 bits each.
C: 160 Bits I the size of an Ipv4 header, which is 20 octets (20×8=160). Also, the Ipv6 header has
to hold both a source and destination address for the packet, at 128 bit each, which is 256 bits just
in addressing alone.
D: The header is not 1024 bits.