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AQA A-Level Computer Science
Internet and Security

AQA · A-Level Computer Science

Internet and Security

3Topics

1.8hStudy time

In this section

3 topics

Internet Routing, DNS and Names

Explain packet switching, routers and gateways

Firewalls, Cryptography and Malware

Compare packet filtering, stateful inspection and proxies

TCP/IP Layers, Sockets and Protocols

Describe the four TCP/IP layers

Work through each topic to complete the section.