While the devices comprising a LAN continue to evolve, the definition of a LAN has not changed in more than 20 years. A LAN is a data network that occupies a relatively small area, like a house or an office, where components like computers can access the same resources and services. The two most common LAN technologies are Ethernet and Wi-Fi (802.11x). Older technologies like Token Ring are rarely used today. Consequently, any device in your home, school or office directly connected to a local area network with an Ethernet cable, or a Wi-Fi adapter, is a LAN device.
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