That Blue Square Thing

AQA Computer Science GCSE

This page is up to date for the AQA 8525 syllabus for exams from 2022.

Networks - the Basics of Computer Networks

Computer networks are everywhere, linking devices together to make them more powerful and increase our own efficiency.

We use networks all the time: at school; at work; at home; and, increasingly, when we're anywhere. Our networks can be wired or wireless and you need to know the advantages and disadvantages of each.

PDF iconNetwork Basics

Networks can be classed as LAN, WAN or PAN in terms of the area they cover.

PDF iconLAN, WAN and PAN intro slides

PDF iconLAN, WAN and PAN types - detail with activities

PDF iconNetwork types table - to complete

Wireless and Wired Networks

There are advantages and disadvantages to each type of network.

PDF iconAdvantages and Disadvantages of Wired and Wirless networks - a summary

This content links to Unit 8 - Wireless networking. This means it could easily be the subject of a longer question and you need to be able to deal with Ethical, Environmental and Legal points.

Network Topologies

A network topology is how a set of devices are organised. You only need to know about Bus and Star topologies.

PDF iconNetwork Topologies

PDF iconTopologies Questions - activities to do

You need to be able to draw and label each topology - assume there will be 3 marks for doing this. Make sure you only include what's asked for - so if they ask for a three computer network with a printer, only draw those things (not a server, for example).

Bus Topology Diagram:

bus network topology diagram

Star Topology Diagram:

star network topology diagram