LAN (Local Area Network)
A LAN (Local Area Network) is a group of interconnected devices located within a limited area — such as an office, building, or home. The main purpose of a LAN is to enable data exchange, resource sharing (printers, storage, Internet), and internal communication among connected devices.
How It Works
A LAN is built using switches, routers, and network cables or Wi-Fi connections. All devices receive IP addresses within the same subnet and communicate via the Ethernet or Wi-Fi protocol.
The router connects the LAN to external networks (e.g., the Internet), while switches manage frame transmission within the LAN by directing data to the correct destination device.
Applications
LANs are used in offices, schools, factories, and homes. In businesses, they support file sharing, database access, and server communication. At home, a LAN connects computers, TVs, gaming consoles, and other devices into a unified network for efficient data sharing and Internet access.
Advantages
- High data transfer speed and low latency.
- Centralized management and access control.
- Easy scalability and integration with WAN or VPN.
- Reliable and secure internal data exchange.
Example
In an office, a LAN connects workstations, servers, and printers, allowing employees to share documents and access common company resources.
Frequently Asked Questions
A LAN covers a small area such as an office or building, while a WAN (Wide Area Network) connects multiple LANs across cities or countries.
Yes. Wi-Fi is part of a LAN — a wireless access point connects devices without cables while maintaining communication within the local network.
Modern LANs support speeds from 100 Mbps (Fast Ethernet) up to 10–100 Gbps or higher when using fiber-optic connections.
A home LAN connects computers, TVs, and smartphones, allowing file transfers, online gaming, media streaming, and shared Internet access.
[post_accordion]
