Question

How many times per IPv6 address can you compress an all-zero group with a double colon [::]?

A) Once
B) Twice
C) As many times as needed
D) Never

Answer 1

In IPv6, an all-zero group can be compressed using a double colon (::) once in an IPv6 address.

Step-by-step explanation:

In IPv6, an all-zero group can be compressed using a double colon (::) when consecutive groups of zeros are present. This compression can be done once in an IPv6 address. The purpose of compressing the zeros is to make the address shorter and easier to read. For example, the address 2001:0db8:0000:0000:0000:0000:0000:abcd can be compressed to 2001:0db8::abcd.