This key facts covers Quick Reference - TCP/IP Layers within TCP/IP Layers for GCSE Computer Science. Revise TCP/IP Layers in Networks for GCSE Computer Science with 15 exam-style questions and 18 flashcards. This topic appears less often, but it can still be a useful differentiator on mixed-topic papers. It is section 10 of 10 in this topic. Use this key facts to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 10 of 10
Practice
15 questions
Recall
18 flashcards
Quick Reference - TCP/IP Layers
- 4 - Application: HTTP, SMTP, FTP, DNS (what you use)
- 3 - Transport: TCP (reliable), UDP (fast)
- 2 - Internet: IP (routing, IP addresses)
- 1 - Link: Ethernet, WiFi (physical transmission, MAC addresses)
Remember: Data goes DOWN layers when sending (App→Link), UP layers when receiving (Link→App)!