WiFi (Wi-Fi), etc. the abbreviation of the phrase Wireless Fidelity(means wireless fidelity) is and under which communication with the power more than your Bluetooth will be created. Connection Wi-Fi, more on basic communication network, the internet, wirelessly, stresses and the same would cause immense popularity, it has been using this technology to easily travel, plane, or hotel can be done via the Laptop connected to the internet. Wi-Fi is the same as the standard IEEE802. the 11 is in the model, 802 the 11g and 802. the 11b is used and the standard of its original IEEE802٫11b. In this model, the maximum data transfer rate 11Mbps and radio frequency 2/4 GHz uses. To speed up the standard model, another is also called 802 the 11n created when the transfer speed at least up to 200Mbps increases. Increase the speed in 802 the 11n, due to the use of the system, a few (MIMO), the use of two frequency range 2. the 4 and 5 GHz, and some specific techniques in the access environment (Medium Access-MAC).