Wireless LAN or WLAN is a network composed of at least one WAP and a computer or handheld device that connect to the WAP
Usually these networks are Ethernet based, but they can be built on other networking architectures
In order to ensure compatibility, the WAP and other wireless devices must all use the same IEEE 802.11 WLAN standard
Wireless Fidelity (WiFi ) is a trademark to brand products that belong to the category of WLAN devices