Wikipedia
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 Wireless LANs based on the IEEE 80211 standards are the most widely used computer networks in the world These are commonly called Wi-Fi, which is a trademark belonging to the Wi-Fi Alliance
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