Common types of networks, what are the common types of computer networks

LAN, WAN, WAN, Internet.

<> common types of computer networks include the following:

1. Local area network, LocalAreaNetwork, referred to as LAN, is generally limited to a small area, less than 10 kilometers, and is usually connected by wire; 2. MetropolisAreaNetwork, referred to as MAN, is limited to an area of 10 to 100 kilometers within the scope of a city;

3. WideAreaNetwork, referred to as WAN, crosses national borders, continents, and even the world.

LAN, WAN, and WAN.

1. Local area network.

The coverage area of the LAN is generally within a radius of several thousand meters, and its convenient installation, cost saving, and convenient expansion make it widely used in various offices. LAN can realize functions such as file management, application software sharing, and printer sharing.

2. Metropolitan area network.

A metropolitan area network is a computer communication network established within a city, referred to as MAN. It belongs to a broadband local area network. Due to the use of LAN technology with active switching elements, the transmission delay in the network is small, and its transmission medium mainly adopts optical cable, and the transmission rate is more than 100 megabits.

3. Wide area network.

A WAN is a long-distance network that connects computer communication between local area networks or metropolitan area networks in different regions. It is usually spanning a large physical range, covering a range of tens to thousands of kilometers, and it can connect multiple regions, cities and countries, or across several continents and provide long-distance communication to form an international long-range network.

Features: 1. LAN.

The LAN is generally owned by a department or unit, which is easy to build, maintain, and expand, and the system is highly flexible. Its main features are:

1. The geographical scope covered is small, only connected in a relatively independent local range, such as one or a concentrated building complex.

2. Use a specially laid transmission medium for networking, and the data transmission rate is high (10MB S 10GB S).

3. The communication delay time is short and the reliability is high.

4. LAN can support a variety of transmission media.

2. Metropolitan area network.

1. Transmission rate.

The broadband metropolitan area network adopts large-capacity packet over SDH transmission technology to provide transmission guarantee for high-speed routing and switching. Gigabit Ethernet technology is widely used in broadband metro networks, enabling the ports of backbone routers to be extended to distribution switches at high speed and efficiently. Optical fiber and network cable to the user's desktop, so that the data transmission speed reaches 100m and 1000m.

2. Low investment is simple.

Broadband metro network client devices are cheap and widespread, and routers, hubs, and even ordinary network cards can be used. Users only need to connect optical fibers and network cables appropriately, and simply configure the relevant parameters of the user's network card or router to access the broadband metropolitan area network.

Individual users only need to install an Ethernet card on their own computer, insert the interface of the broadband metropolitan area network into the network card, and then connect to the Internet. The installation process is the same as the previous one, except that the network cable replaces the ** cable, and the computer replaces the ** machine.

3. Wide Area Network.

The sending medium of the WAN is mainly the use of ** lines or optical fibers, which are connected between enterprises by ISP operators, and these lines are the lines buried under the road in advance by ISP operators, because the project is huge, the maintenance is not easy, and the bandwidth can be guaranteed, so it will be more expensive in cost.

Generally speaking, the Internet is a kind of public WAN, the cost of the public WAN will be lower, and it is a cheaper online environment, but compared with the WAN, there is no way to manage the bandwidth, and the bandwidth of any section cannot be guaranteed by the public network system.

Answer: At present, the common network types are local area network (LAN), wide area network (WAN), metropolitan area network (MAN), wireless local area network (WLAN), virtual private network (VPN), Internet (Internet), etc. A local area network (LAN) refers to a network within a certain range, usually within a building or an area, that can provide high-speed data transmission and can support sharing between multiple computers.

Wide Area Network (WAN) refers to a network that spans regions, it can connect local area networks in different regions, such as countries, provinces, cities, etc., it can support a wide range of data transmission, and it can support sharing between multiple computers. A metropolitan area network (MAN) is a network within a city that can support a wide range of data transmission and can support sharing between multiple computers. Wireless Local Area Network (WLAN) refers to a local area network built by wireless technology, which can support a wide range of data transmission and can support sharing between multiple computers.

A virtual private network (VPN) is a private network built using a public network, which can support a large range of data transmission and can support sharing between multiple computers. The Internet refers to a network of many networks that can support a wide range of data transmissions and can support sharing between multiple computers.

Network type refers to the different ways of classifying networks from different perspectives.

Each network name has a special meaning, the combination of several names or the name plus parameters can be seen the characteristics of the network, Gigabit Ethernet including Lashi means that the transmission rate is high and noisy up to Gigabit bus type network, can transmit voice, ** and other real-time information, is the most promising type of network reputation one.

According to the geographical location of the network, it is divided into local area network, metropolitan area network, and wide area network. Local area networks, confined to a small area, less than 10 kilometers, are usually connected by wire. A metropolitan area network that is limited in size to an area of 10 to 100 kilometers within the confines of a city.

Wide area networks, networks that transcend national borders, continents, and even the globe. At present, the local area network and the wide area network are the hot spots of the network, the local area network is the basis for the other two types of networks, the metropolitan area network is generally joined by the wide area network, and the typical representative of the wide area network is the Internet.