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Unit 3 · 4 lessons

Networking

How two machines find each other, agree on a language, and move data reliably across a room or a continent.

  • 36 practice questions
  • 38 flashcards
  • 1 interactive lesson
Start lesson 1 →Unit 3 test review →

Lessons

  1. 1Network Types, Topologies and MediaThe vocabulary: LAN and WAN, client-server and peer-to-peer, the shapes networks are wired in, and what the cables actually are.8 questions
  2. 2The OSI and TCP/IP ModelsThe layered models that let a browser written by one company talk to a server written by another, over hardware from a third.9 questions
  3. 3IP Addressing and SubnettingHow every device on a network gets a unique address, and how the subnet mask decides which devices can reach each other directly.Interactive10 questions
  4. 4Network Devices, Cabling and SecurityWhat each box in the rack actually does, how to terminate a cable correctly, and how to secure and troubleshoot the result.9 questions