What are the parts of the computer network that you are actually exposed to including hardware, sof

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 processing machine: A communication control processing machine set up between the communication line connected to the terminal and the host unit, 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 concentrator 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 together 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.

Why do you ask this? Mind your birds.

Among the following 4 answers, one of the main components of a computer network is ().

a.Graphics card.

b.Sound card. c.Network adapter.

d.Movie cards.

Correct answer: B

Answer]: A Tips: The computer network is composed of a network loss transfer hardware system (such as multiple computers or other computer network equipment, transmission media, etc.) and a closed system of car and air tank network software (such as network operating system, network protocol, etc.).

Network software: the system software of the system and some network equipment in operation.

Computer: ordinary PC, server, etc.

The working principle of the computer network is to connect multiple computers and their external devices with independent functions in different geographical locations through communication lines, and realize resource sharing and information transmission under the management and coordination of network operating system, network management software and network communication protocol.

Answer]: A The correct answer is A.

Tips: A computer network consists of a network hardware system (such as multiple computers or other computer network equipment, transmission media, etc.) and a network software system (such as a network operating system, network protocol, etc.).

Computer network hardware includes:

Host system: It is the main body of the computer network.

Terminal: The terminal does not have local processing power and cannot be directly connected to the network, but can only be connected to the network through the host on the network for example, (display terminal, printing terminal, graphic terminal, etc.).

Transmission medium: The function of the transmission medium is to form a channel between network equipment and realize the exchange of information. (The most common types of transmission media: coaxial cable, twisted pair, optical fiber).

Network card: (introduced online).

Hub: :(available online).

Switch: (Introduced online).

Router: (Introduced online).

Computer network software includes:

Server operating system: The NOS operating system, commonly referred to as the operating system, is a multi-task, multi-user operating system.

Workstation operating system.

Network communication protocols.

Device driver.

Network management system software.

Cybersecurity software.

Web application software.

Hardware: network adapters, network transmission media, network connection devices.

Software; Network operating system.

Hardware: all kinds of servers (DNS, mail servers, file servers, web servers, etc.), multi-function routers, firewalls, network equipment controllers (switches, hubs, network cards), network cables, terminals.

Generally, there is a power supply, motherboard, CPU, and memory can be lit.

But the specific ones that can be used are hard disks, monitors, and keyboards.

Others include chassis, optical drives, mice, etc.

When it comes to professional software, it is the operating system, and the most commonly used is the Windows class, XP Win7.

In addition, there is office software.