A wireless network uses radio waves instead of wires to connect devices. There are four main types of wireless networks including wireless local area networks (LANs), wireless metropolitan area networks (MANs), wireless wide area networks (WANs), and wireless personal area networks (PANs). The basic components of a wireless network are access points, routers, and clients such as laptops and phones. Wireless networks provide benefits like lower costs since no wiring is needed, mobility to move devices freely, easier setup compared to wired networks, and easy expandability.