Northern Arizona University
Wi-Fi is a Wireless Local Area Network (WLAN) that uses radio wave technology to connect electronic devices to the Internet. Wi-Fi is based on the Institute of Electrical and Electronics Engineers' (IEEE) 802.11 specifications, a set of standards that define how WLANs communicate and enable high-speed wireless data transmission via 2.4 and/or 5 GigaHertz (GHz) bands or channel frequencies. The regulated 5GHz band offers higher throughput or transfer speeds at a shorter distance but may be obstructed by physical barriers, such as walls and floors. The unregulated 2.4GHz band offers increased coverage and higher solid object penetration but maybe susceptible to interference from unlicensed devices, such as microwave ovens and Bluetooth speakers.