Question

How many bytes long is a hexadecimal group in an IPv6 address?

A) 1 byte
B) 2 bytes
C) 4 bytes
D) 8 bytes

Answer 1

In an IPv6 address, each hexadecimal group is 2 bytes long, which is equivalent to 16 bits.

Step-by-step explanation:

Each hexadecimal group in an IPv6 address represents 16 bits, which is equivalent to 2 bytes. Therefore, the correct answer is B) 2 bytes. To better understand this, remember that an IPv6 address is composed of 8 groups of 4 hexadecimal digits. Each hexadecimal digit represents 4 bits, so a group of 4 hexadecimal digits (also known as a hextet) translates into 16 bits (4 bits per digit times 4 digits). Since 8 bits make up 1 byte, a group or hextet in an IPv6 address equals 2 bytes.