Unit 3: Networks

Old teaching notes

I am still in the process of migrating & updating my teaching material for this unit. In the interim, so as to faciliate revision by the current Year 13s, I have shared the teaching slides I used with you.

Open shared folder containing former teaching slides


Network fundamentals

Network types: LAN, PAN, WAN etc


OSI model

TCP IP stack, packet switching TCP v UDP


VPNs


Transmitting data

HTTP HTTPS IPv4, IPv6 DNS Compression: Lossy, lossless Media: Wires, wifi, fibre Factors affecting transmission rates

Wireless networks

Components Technologies compared Security

Review questions

Computer Science Illuminated by Nell Dale & John Lewis (page numbers based on 6th edition):