What Does Wireless Fidelity (Wi-Fi) Mean?
Wi-Fi is a type of wireless network technology used for connecting to the Internet. The frequencies wi-fi works at are 2.4Ghz or 5Ghz, ensure no interference with cellphones, broadcast radio, TV antenna and two-way radios are encountered during transmission.
Techopedia Explains Wireless Fidelity (Wi-Fi)
There are several standards of Wi-Fi with different speeds and power requirements. The earliest standard was 802.11b, though it is the slowest but least expensive in terms of cost. This was soon upgraded to 802.11a and 802.11g. Both of these standards included technology for splitting the radio signal and thus reducing interference. The latest standard is 802.11n, which allows even longer ranges and data throughput.