Local Area Networks

Local Area Network (LAN)is a network that interconnects the devices in a limited geographical area such as a school, office etc. In comparison to larger networks, they have higher data transfer rates.

The most common LAN technologies today are

  • Ethernet over twisted pair cables for wired LAN
  • WiFi for wireless LAN

A LAN basically comprises of

  • End devices - PCs, laptops, servers, printers etc equipped with NICs (Network Interface Cards) or wireless adapters.
  • Network devices - hubs, switches, WAPs (Wireless Access Points)
  • Cabling for wired devices. The most common type of cabling in use today is twisted pair. Other types are coaxial cables, fibre optic cables etc.

A Simple Ethernet LAN

Ethernet LAN

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