What distinguishes a Wireless Local Area Network (WLAN) from a LAN?

A Wireless Local Area Network (WLAN) is characterized primarily by its ability to connect devices without the need for physical cables. This wireless connectivity is achieved through radio waves, enabling users to move around freely within the network's coverage area, which is especially beneficial in environments such as homes, offices, or campuses.

Using radio frequencies allows WLANs to facilitate communication between devices like laptops, smartphones, and tablets without the constraints of wired connections. The flexibility and mobility offered by WLANs is a significant advantage compared to traditional Local Area Networks (LANs), which typically rely on Ethernet cables for connectivity.

The other options do not accurately reflect the defining characteristics of WLANs. While range can vary based on factors such as technology and environment, it is not inherently greater compared to LANs. Moreover, while WLANs support mobile devices effectively, they are not strictly limited to them; many stationary devices can also connect to a WLAN, making the assertion of exclusivity to mobile devices incorrect. Lastly, fiber-optic cables are a feature of some wired LANs, not WLANs, which depend on wireless technology.