local area network
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A local area network (LAN) is a computer network that connects devices like computers, printers, and phones together over a limited area, such as a home, office, or school building. It matters because it allows these devices to share files, printers, and internet access quickly and efficiently without needing to connect through the wider internet.
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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, and has its network equipment and interconnects locally managed. LANs facilitate the distribution of data and the sharing of network devices, such as printers.