Wi-Fi is a popular technology that allows an electronic device to exchange data wirelessly (using radio waves) over a computer network, including high-speed Internet connections.
Technically speaking, The WIFI (802.11) is a subset of the IEEE 802, that refers to a family of IEEE standards dealing with local area networks and metropolitan area networks.The IEEE 802 standards are restricted to networks carrying variable-size packets
The services and protocols specified in IEEE 802 map to the lower two layers (Data Link and Physical) of the seven-layer OSI networking reference model. In fact, IEEE 802 splits the OSI Data Link Layer into two sub-layers named Logical Link Control (LLC) and Media Access Control (MAC), so that the layers can be listed like this:
- Data link layer
- LLC Sublayer
- MAC Sublayer
- Physical layer
The IEEE 802 family of standards is maintained by the IEEE 802 LAN/MAN Standards Committee (LMSC).So,IEEE 802.11 is a set of standards for implementing wireless local area network (WLAN) computer communication in the 2.4, 3.6 and 5 GHz frequency bands.