Question

1. Describe the structure of an IPv6 address. Write an example

2. How can you write an IPv6 address if it has consecutive 0s. Explain what you do when there are leading 0s àExamples
3. How many bits does a hexadecimal number represent? Give an example of one field.

4. Describe the IPv6 Prefix (also called Network ID in IPv4) and Interface ID (Host ID in IPv4)

Answer 1

1)

An IPv6 address is represented as eight groups of four hexadecimal digits, each group representing 16 bits.

Example: 2311:0ff8:86ba:0000:0000:96f4:1195:99bb

2)

In that case, the IPv6 address can be written as:

0:0:0:0:0:0:0:0

In case of leading zeros, we group 4 zeroes together and write a single for them.

For example, below is a sample IPv6 address:

0:0:ff8:86ba:96f4:1195:99bb:0000

3)

A hex number represent 4 bits. A hex number ranges from 0 to 15, represented using 4 bits. For example, 15 = 1111₂.

4)

IPv6 unicast addresses consist of the prefix followed by an Interface Identifier (IID). The Interface Identifier is used for unique identification of a node´s interface.