Definition

A Local Area Network (LAN) is a group of computers and other network devices that are connected together in a small geographical area, such as a single building or campus. The main purpose of a LAN is to allow the sharing of resources and information between devices within the network.

Example

An example of a LAN would be a network of computers in a small office building. All of the computers in the building would be connected to a central router or switch, allowing them to communicate with each other and share resources such as printers and files.

Users on the network would be able to access shared files and printers, as well as communicate with each other through email or instant messaging.

List of some LAN Technologies

There are different types of LANs, based on the size of the network and the technologies used to connect the devices. Ethernet and Token Ring are the two most common LAN technologies.

Ethernet

This is the most common LAN technology, and it uses a wired connection to connect devices. Ethernet networks can operate at speeds of 10Mbps, 100Mbps, or 1Gbps.

1. Token Ring: This is a type of LAN technology that uses a token to control access to the network. Devices on a Token Ring network must wait for a token before they can transmit data.
2. FDDI: This is a type of LAN technology that uses a ring topology and optical fiber cables to connect devices. FDDI networks are typically used in large organizations.
3. Wireless LAN (WLAN): This type of LAN uses wireless technology (such as WiFi) to connect devices.
4. Powerline LAN (PLC): This LAN technology uses the electrical wiring of a building to transmit data, allowing devices to connect to the network through power outlets.
5. HomePNA: This LAN technology uses the existing telephone wiring of a building to transmit data.

Types of LAN