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What is a local area network?

Views : 95
Author : CETUS INTL
Update time : 2023-09-26 14:37:04
What is a LAN? What are its characteristics? This article will introduce it to you in detail.

What's a LAN?
LAN, type of network. The coverage area is generally within a few kilometers. The LAN has the characteristics of convenient installation, cost saving, and convenient expansion, making it widely used in various offices.

LAN can realize file management, application software sharing, printer sharing and other functions. During use, data security can be effectively protected by maintaining LAN network security. Ensure that the LAN network can operate normally and stably.

A local area network is naturally a regional network formed in a local area. Its characteristic is that the distribution area is limited and can be large or small. As large as the connection between a building and adjacent buildings. Small enough to be a link between offices.

Compared with other networks, the LAN itself has faster transmission speed, more stable performance, simple framework, and is closed. This is also the reason why many institutions choose it.

The local area network itself is roughly composed of three major parts: computer equipment, network connection equipment, and network transmission media. Among them, computer equipment includes servers and workstations. 

Network connection equipment includes network cards, hubs, and switches. The network transmission medium is simply a network cable. It is composed of three major components: coaxial cable, twisted pair and optical cable.

A LAN is a private network, usually within or near a building. Such as home, office or factory. Local area networks are widely used to connect personal computers and consumer electronic devices, allowing them to share resources and exchange information. When LANs are used in companies, they are called enterprise networks.

A local area network connects various computers, external devices and databases within a certain area to form a computer communication network. Connect with local area networks or databases in other places through dedicated data lines to form a larger-scale information processing system.

A local area network connects network interconnection devices such as network servers, network workstations, and printers through network transmission media. Realize system management files, share application software, office equipment, send work schedules and other communication services.

The LAN is a closed network, which can prevent information leakage and external network virus attacks to a certain extent. Has higher security. 

But once an incident such as a hacker attack occurs. It is very likely to cause the entire local area network to be paralyzed. All work within the network cannot be performed. They even leaked a large number of company secrets, causing serious damage to the company's business development.

local area network

What are the characteristics of LAN?
A local area network is generally owned by a department or unit. Network construction, maintenance and expansion are easier, and the system has high flexibility. Its main features are:

The geographical scope covered is small and only connected within a relatively independent local scope, such as one or a concentrated building group.

Using specially laid transmission media for networking, the data transmission rate is high (10Mb/s ~ 10Gb/s).

The communication delay time is short and the reliability is high.
LAN can support a variety of transmission media.

The above is an introduction to LAN.