Which of the following is the best definition for a LAN?

A local area network (LAN) is primarily characterized by its coverage of a small geographic area, such as an office, a home, or a group of adjacent buildings. This definition captures the essence of LANs, emphasizing their role in facilitating communication and resource sharing among devices that are physically close to each other. LANs typically utilize wired connections, such as Ethernet, or wireless technologies, enabling users to connect desktops, laptops, printers, and other devices within that limited spatial range.

The other options describe different types of networks that do not fit the definition of a LAN. A network that spans multiple cities refers to a wide area network (WAN), which covers much larger distances. A network connecting devices across different countries would qualify as an even broader type of network, likely a global network. Lastly, a network exclusively for wireless devices describes a specific configuration, which may apply to a wireless LAN, but it does not encompass the full range of LAN configurations, which can also include wired connections. Thus, the best definition of a LAN remains focused on its limited geographic scope, as stated in the first choice.