Which of the following best describes a WAN?

A WAN, or Wide Area Network, is best described as a network that connects devices over large geographical distances. This type of network is designed to cover broad areas, such as cities, regions, or even countries. WANs often utilize public networks, such as the internet, or leased telecommunication lines to facilitate communication between diverse locations that could be hundreds or thousands of miles apart.

In contrast, local networks confined to a single building represent much smaller geographic areas, which would not fall under the WAN category. Similarly, a home network typically comprises devices within a household and is often classified as a LAN, or Local Area Network. Additionally, a single device network refers to the simplest form of connectivity, where just one device is present and active, making it fundamentally different from a network like a WAN that requires multiple devices spread across great distances. Hence, the definition of WAN as connecting devices across large distances appropriately encapsulates its scope and functionality.