What does a computer network system in a school belong to?

A computer network system within the school belongs to the local area network (LAN). A local area network is a network composed of multiple computers used in a small area. The coverage is usually limited to 10 kilometers. It belongs to a small-scale network established by a unit or department. LAN can be divided into wireless LAN and wired LAN. Wireless LAN can transmit audio, video, and text. Now many companies and campuses are using wireless LAN.

The operating environment of this tutorial: Windows 7 system, Dell G3 computer.

A computer network system within the school belongs to the local area network (LAN).

Local Area Network (Local Area Network, abbreviation: LAN) is a network composed of multiple computers used in a small area. The coverage is usually limited to 10 kilometers and belongs to a A small-scale network established by a unit or department.

The characteristic of local area network is that the distribution area is limited, which can be large or small. It can be as large as the connection between a building and adjacent buildings, or as small as the connection between offices. Compared with other networks, the LAN itself has faster transmission speed, more stable performance, simple framework, and closed nature, which is why many organizations choose it. The local area network itself is generally composed of computer equipment, network connection equipment, and network transmission media. Computer equipment includes servers and workstations, and network connection equipment includes network cards, hubs, and switches. Network transmission media is simply Network cable is composed of three major components: coaxial cable, twisted pair and optical cable.

A LAN is a private network, typically within or near a building, such as a 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.

Local area networks can be divided into wireless LANs and wired LANs:

Wireless LAN

Wireless LAN, referred to as WLAN, is a A computer network is formed by interconnecting computers in company buildings or shopping malls within a few kilometers. A wireless LAN can support the use of several to thousands of computers. Nowadays, there are more and more applications of wireless LAN. Nowadays, campuses, shopping malls, companies and high-speed railways are all using it. The application of wireless LAN has brought great help to our lives and work. It can not only quickly transmit the information people need, but also make people's connections on the Internet faster and more convenient.

Wireless LAN has become very popular recently, especially in homes, old office buildings, canteens and other places where installing cables is too troublesome. In these systems, each computer has a wireless modem and an antenna that it uses to communicate with other computers. In most cases, each computer communicates with a device mounted on the ceiling. This device becomes an access point, wireless router or base station. It is mainly responsible for relaying data packets between wireless computers, and is also responsible for relaying data packets between wireless computers and the Internet.

Wireless LAN can transmit audio , video, text. Many companies and campuses are now using wireless LANs. Not only can it improve office efficiency, but it can also quickly transmit information. The establishment, maintenance and management of wireless LAN are very simple and rarely interfered with. It can also save network fees. There are two main criteria for establishing a wireless LAN: first, strong flexibility and independence. The placement of wireless LAN components and related equipment is not restricted by any space. After the user connects to the wireless LAN. You can use your own mobile phone or laptop to connect to the system network, and it will not affect the normal use of the wireless LAN. Second, it has good scalability and advancement. The construction structure of wireless LAN is very simple. It will be updated with the development of current scientific and technological information technology, improving performance and upgrading the system, thereby making information transmission faster.

Wired LAN

Wired LAN uses a variety of different transmission technologies. Most of them use copper wire as the transmission medium, but some use optical fiber. LANs are limited in size, which means the worst-case transfer time is also bounded and known in advance. Understanding these boundaries aids in the design of network protocols. Typically, wired LANs run at speeds between 100Mbps and 1Gbps, with very low latency (microseconds or nanoseconds) and few errors. Newer LANs can operate at rates up to 10Gbps. Compared to wireless networks, wired LANs surpass them in all aspects of performance.

The topology of many wired LANs is based on point-to-point links. IEEE 802.3, commonly known as Ethernet, is by far the most common type of wired LAN. In a switched Ethernet network, each computer operates in a manner specified by the Ethernet protocol and is connected to a box through a point-to-point link. This box is called a switch. This is where the name switched Ethernet comes from.

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