Wi-Fi is known as wireless fidelity. Wi-Fi is supported by a lot of applications and devices as well as video game consoles, home networks, PDAs, mobile phones and new kind of user electronics. There is no any physical wired connection among the sender and the receiver. Only the radio frequency wave technology is used, were the frequency inside the electromagnetic range is connected with radio wave broadcast. In a Wi fi network, computers through Wi fi networks cards are connected wirelessly to a wireless router.
This particular router is connected to the internet through modem, which is naturally known as a cable or DSL modem. The advance wifi technologies will enlarge range from 300 feet to 600 feet and further than, at the same time as increasing the data transfer rates. These Wifi technology uses radio for communication, usually in use at a frequency of 2.4GHz.
