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Wireless Local Area Networks or WLAN. An area around a WiFi router that provides you with connectivity to a network and its resources. These can include LAN functions as well as internet connectivity. These types of networks also provide connectivity for third party applications shared through a facility.

WLAN (Wikipedia)
This notebook computer is connected to a wireless access point using a PC Card wireless card.
An example of a Wi-Fi network

A wireless LAN (WLAN) is a wireless computer network that links two or more devices using wireless communication to form a local area network (LAN) within a limited area such as a home, school, computer laboratory, campus, or office building. This gives users the ability to move around within the area and remain connected to the network. Through a gateway, a WLAN can also provide a connection to the wider Internet.

Most modern WLANs are based on IEEE 802.11 standards and are marketed under the Wi-Fi brand name.

Wireless LANs have become popular for use in the home, due to their ease of installation and use. They are also popular in commercial properties that offer wireless access to their employees and customers.

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