Local Area Network or most popularly known as LAN is a group of computers and devices that are connected each other and are located in the same area. The typical Lan consists of two or more computers, printers, and a large hard disk drive, that is called server. Mostly every LAN should have a server. It should be used for uploading and downloading movies, mp3s, games. Unfortunately if you are apart from a big LAN this Server may not be free. You have to pay some money for that prevelegue. Users can also use the LAN to communicate with each other, by sending e-mail or engaging in chat sessions. Some other benefit is that people can share expensive devices like laser printers, or programs. Can you imagine if in a large com