How many bits are contained in each field of an IPv6 address?
A. 24 B. 4 C. 8 D. 16
Correct Answer: D
Explanation: An IPv6 address is represented as eight groups of four hexadecimal digits, each group representing 16 bits (two octets). The groups are separated by colons (:). An example of an IPv6 address is 2001:0db8:85a3:0000:0000:8a2e:0370:7334.