What technology does a WLAN use to transmit data?

A WLAN (Wireless Local Area Network) uses radio frequency (RF) technology to transmit data. RF is a widely used method for wireless communication that allows devices to connect and exchange information without the need for physical cables. This technology operates within specific frequency bands, commonly 2.4 GHz and 5 GHz for WLANs, enabling devices such as laptops, smartphones, and tablets to connect to a wireless network and communicate with each other as well as with wired networks.

The use of RF for WLAN transmission supports mobility and flexibility since users can access the network from various locations within the coverage area. This characteristic is fundamental to the appeal and functionality of WLANs, making them ideal for home, office, and public network environments where ease of access and installation are priorities.

Other technologies mentioned, such as cable connections, infrared signals, and fiber optics, do not align with the operational principles of a WLAN. Cable connections require physical wires, which negate the wireless aspect. Infrared communication, while a wireless method, is typically limited to line-of-sight and has a shorter range compared to RF. Fiber optics are used for high-speed wired connections but do not apply to wireless data transmission. Thus, the use of radio frequency is the defining characteristic of WLAN technology.