What are the local area networks?

Local area networks include: 1. Ethernet, which is the most widely used local area network; 2. FDDI network, a local area network technology developed in the mid-1980s, provides a way for high-capacity input and output on busy networks. An access method; 3. Token Ring Network, which was developed by IBM in the 1970s; 4. ATM Network, a newer unit switching technology that uses 53-byte fixed-length units for switching; 5. , Wireless LAN is characterized by freedom. As long as it is within the coverage of the network, it can be connected to servers and other workstations anywhere.

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

A local area network is naturally a regional network formed in a local area. Its characteristic 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 an adjacent building, or as small as an office. the relationship between.

The types of LAN are:

1. Ethernet. Ethernet was first created by Xerox and was jointly developed as a standard by DEC, Intel and Xerox in 1980. Ethernet is the most widely used local area network, including standard Ethernet (10Mbps), fast Ethernet (100Mbps), Gigabit Ethernet (1000 Mbps) and 10G Ethernet, all of which comply with the IEEE802.3 series of standard specifications;

2. FDDI network.

FDDI's full name in English is "Fiber Distributed Data Interface", and its Chinese name is "Fiber Distributed Data Interface". It is a local area network technology developed in the mid-1980s. It provides high-speed data communication capabilities. Higher capabilities than Ethernet (10Mbps) and Tokennet (4 or 16Mbps) at the time. The FDDI standard was developed by the ANSI X3T9.5 standards committee to provide an access method for high-volume input and output on busy networks. FDDI technology is similar to IBM's Tokenring technology, and has management, control and reliability measures that LAN and Tokenring lack. FDDI supports multi-mode optical fiber up to 2KM;

3. Token ring network.

Token Ring Network was developed by IBM in the 1970s. This kind of network is relatively rare now. In the old Token Ring network, the data transmission speed is 4Mbps or 16Mbps, and the new fast Token Ring network speed can reach 100Mbps. The transmission method of the Token Ring network physically adopts a star topology, but logically it is still a ring topology;

4. ATM network. The full name of ATM is "asynchronous transfer mode" in English and "asynchronous transfer mode" in Chinese. Its development began in the late 1970s. ATM is a newer unit switching technology. Unlike Ethernet, Token Ring, FDDI networks, etc., which use variable length packet technology, ATM uses 53-byte fixed-length units for switching;

5 , wireless LAN.

Wireless LAN is currently the latest and most popular type of LAN, especially since Intel launched the first Centrino notebook processor with its own wireless network module.

The main difference between wireless LAN and traditional LAN is the different transmission media. Traditional LANs are connected through tangible transmission media, such as coaxial cables, twisted pairs and optical fibers, while wireless LAN Air is used as the transmission medium. Just because it gets rid of the constraints of physical transmission media, the biggest feature of this kind of LAN is freedom. As long as it is within the coverage of the network, it can be connected to servers and other workstations anywhere without the need to re-lay cables.

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