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Local area network

"LAN" redirects here. For other uses, see Lan.
A conceptual diagram of a LAN at a residential house; the router in this case is assumed to also function as a wireless access point. Also shown in this example (shaded in yellow) is the network's connection to the Internet via fixed-line means.

A local area network (LAN) is a computer network that interconnects computers within a limited area such as a residence, campus, or building,[1][2][3] and has its network equipment and interconnects locally managed. LANs facilitate the distribution of data and sharing network devices, such as printers.

The LAN contrasts the wide area network (WAN), which not only covers a larger geographic distance, but also generally involves leased telecommunication circuits or Internet links. An even greater contrast is the Internet, which is a system of globally connected business and personal computers.

Ethernet and Wi-Fi are the two most common technologies used for local area networks; historical network technologies include ARCNET, Token Ring, and LocalTalk.

Computer network types
by scale
  1. ^ Gary A. Donahue (June 2007). Network Warrior. O'Reilly. p. 5.
  2. ^ Wood, Roy (2024-04-01). "Computer Hardware, Software, and Networks". Introduction to Information Systems Management.
  3. ^ "What is a LAN? Local Area Network". Cisco. Retrieved 2024-12-04.

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