Which network type is typically used for connecting devices within a single building?

• A. LAN
• B. WLAN
• C. SAN
• D. CAN

Answer: (A)

A Local Area Network (LAN) is designed to connect devices in a small, confined geographic area such as a single building. It provides high-speed communication and can be wired (Ethernet, switches) or wireless (Wi‑Fi) within that same network. The key idea is the limited scope—LANs cover one building or a few rooms, which is exactly the scenario described.

WLAN is a way to implement a LAN using wireless connections, but it’s still a LAN in essence—just the wireless portion of it. CAN, or Campus Area Network, would span multiple buildings on a campus, and SAN, a Storage Area Network, is specialized for connecting storage devices rather than general devices in a building.