Computers in one bullding or in adjacent bulldings.

wans
lans
mans

LANs

Explanation:

Local area networks (LANs) connect computers, printers, and other devices in a relatively small area like a single building or a group of adjacent buildings.

For comparison, metropolitan area network (MANs) cover a larger area the size of a city, while wide area networks (WANs) cover an even larger area the size of multiple cities, a state, a country, or even the world. In fact, the Internet is classified as the largest WAN in the world.