How does a wireless LAN work?
Wireless LANs transmit and receive data over the air via radio frequency technology, eliminating the need for wired connections. In wireless local area networking, a device called an access point, which is hard-wired to a computer network itself, broadcasts a signal to the surrounding area. Any device that is equipped with a wireless networking card can receive that signal and communicate with the access point, and through it, with the rest of the network.