What Is a LAN Network?

A local area network connects computers to each other.

A LAN or local area network is a group of computers that are linked together and share Internet access, file access, applications, storage and utilize connected hardware such as printers and scanners.

Wired Networks

The most common local area networks are created using Ethernet cables to link the computers. Ethernet cables running from each computer's Ethernet port are connected to a router or hub that links the computers together in the LAN network.

Wireless Networks

Local area networks can also be created wirelessly. Using a wireless Ethernet card, computer users can connect to devices capable of transmitting wireless Internet or network data.

Large and Small Networks

Local area networks can be as small as linking two computers in a home office together or as large as hundreds or thousands of employees connected in an office building.

Router

A router is a network device that can connect and send information from one computer to another and in doing so, creates the local area network. A router can be either wireless, wired or a hybrid combination of wired and wireless.

Repeater

For those using a wireless local area network, repeaters can be used to extend the range of the wireless signal. A repeater works by receiving the wireless signal from the router and rebroadcasting the signal to connect wireless networks at a greater distance.

References

• Search Networking: Definition--local area network
• Wise Geek: What is a LAN Network?
• Indiana University: What is a LAN (local area network)?