This pack of revision notes contains highly-detailed explanations, examples, diagrams and algorithms for Networking and Computer Communication for the Computer Science A-Level. Check the tags for all of the information included! The notes aren't in any particular order, but everything is included under a heading/subheading, so it's easy to find what you need. I hope these are helpful!

these documents cover what you need to know about communication and the internet for the exam. They cover how data is passed across the internet between devices, as well as how this data is authenticated.

This document covers what you need to know about how data packets are authenticated when being sent and received across the internet.