What are the basic components of a computer network master? 5

The computer network system is composed of computer system, data communication and network system software, and mainly has the following components from the hardware point of view:

1) Terminal: The equipment used by the user to access the network, such as teletypewriters, keyboard monitors, computers, etc. In the local area network, the terminal is generally served by a microcomputer, called a workstation, and users share online resources through the workstation.

2) Host: A computer system for data analysis, processing, and network control, including external devices, operating systems, and other software. In the local area network, the host is generally served by a higher-end computer (such as 486 and 586 machines), called a server, which should have abundant resources, such as large-capacity hard disks, sufficient memory and various software.

3) Communication handicap: A communication control processing machine set up between the communication line connected to the terminal and the host, which shares the control and management of data exchange and various communications. In the local area network, there is generally no communication processor, and the host directly undertakes the control and management tasks of communication.

4) Local line: refers to the line that connects the terminal with the node host, including the empty decomposer or multiplexer. It is a low-speed line with low cost and efficiency.

It is also usually composed of three parts, which are the resource subnet, the communication subnet, and the communication protocol. The so-called communication subnet is the part of the computer network that is responsible for data communication; The resource subnet is the user-oriented part of the computer network, which is responsible for the application-oriented data processing of the whole network. The rules and agreements that both parties must abide by are called communication protocols, and their existence or absence is the fundamental difference between computer networks and general computer interconnection systems. So from this point of view, we should be able to better understand why computer networks are the product of the development of computer technology and communication technology.

The computer network system is composed of computer system, data communication and network system software, and mainly has the following components from the hardware point of view:

The hardware on the computer generally includes a chassis, power supply, CPU, memory, hard disk, graphics card, motherboard, keyboard and mouse, as well as monitors and speakers.

Computers are divided into general network standards. According to this standard, various network types can be divided into four types: local area network, metropolitan area network, wide area network and Internet. LAN:

Usually our common "LAN" refers to the local area network, which is our most common and widely used network.

A computer network is divided into two parts: a communication subnet and a resource subnet. The function of the communication subnet: responsible for the data communication of the whole network; Capabilities of the resource subnet:

Yinzao provides a variety of network resources and network services to realize the sharing of network resources. Network hardware systems and network software systems.

According to the relationship between nodes, computer networks are divided into wide area networks and local area networks. The wide area network, also known as the remote network, covers a range from hundreds of kilometers to thousands of kilometers, and is a remote network that uses Lingboqin in an industry or professional system, not the public Internet.