How many bits is an IPv6 address?

How many bits is an IPv6 address?

A.
32

B.
48

C.
64

D.
128

Explanation:
Understanding IPv6

The top reason to use IPv6 is address space. IPv6 is a 128-bit system, whereas its still-dominant predecessor IPv4 is only a 32-bit system. While IPv4
can have approximately 4 billion IP addresses in the whole system, IPv6 can have 340 undecillion addresses.