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How-To Geek

Local Area Network (LAN)

A Local Area Network (LAN) is a computer network that connects computers and devices in a limited physical area such as a home, school, or commercial building.

While historically LANs were deployed exclusively over physical cabling, modern LANs routinely incorporate both wired and wireless connectivity with many home users connecting to their home LANs exclusively via Wi-Fi.

The defining characteristics of a LAN are generally high speed data transfer, independent operation (each individual LAN can exist by itself without connecting to other LANs, the Internet, or other telecommunications infrastructure), and small geographic area (individual LANs typically serve small numbers of computers/users and rarely extend beyond the range of a building or small subset of buildings).

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