LAN, or local area network, is a computer network that covers a small geographic area such as an office building or a university.
This sort of computer networks share a common communications line or wireless link to a server.
To communicate, LANs mostly use Ethernet and Wi-Fi technology. Despite being mostly used within a small geographic space, LANs can be connected to other LANs via telephone lines and radio waves, creating a wider LAN mesh.
LAN is a division of computer network types taking into account their spatial scope. In here, there are things like near-me AN (NAN), personal AN (PAN), and body AN (BAN).
However, there are also two extra types of LANs today: home area network (HAN) and storage area network (SAN).
As it suggests in the HAN architecture the idea is to use LAN’s capabilities of computer network for small spaces, in this case a home.
With SAN, this corresponds to a network that gives access to block level data storage.