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Edexcel IGCSE·Computer Science·IGCSE Computer Science

Networks & the Internet

12 min read

LANs and WANs, topologies, protocols, and how data travels across the internet.

A network connects computers to share data and resources.

Types and topologies

  • LAN: one site; WAN: geographically spread (the internet).
  • A star topology connects each device to a central switch (reliable, easy to extend).

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