154. AQA A’Level SLR22 The structure of IP addresses


About this video

AQA Specification Reference
A Level 4.9.4.3-4.9.4.4

In this video we take a look at the components that make up an IP address and explain how it is split into a network identifier and host identifier part. We also explain how subnet masking can be used in order to identify the network component.

Key questions:

- How is an IP address made up?
- How can IP addresses be used to divide networks into subnets using a subnet mask?

00:00 The structure of IP addresses
00:12 Intro
00:17 IPv4
01:27 The structure of IP addresses
01:39 Classful addressing
02:24 Classless addressing
04:44 Key questions
04:59 Outro

Last updated: 03.11.25