What are the main features of computer networks

1. Data communication.

Data communication is one of the most important functions of computer networks. Data communication is based on a certain communication protocol.

A communication mode and communication service that uses data transmission technology to transmit data information between two terminals. It can realize the transmission of data and information between computers and computers, computers and terminals, and terminals and terminals, and is the third largest communication service after telegraph and ** service. Another feature of data communication is that it is always associated with telematics, which is a generalized information processing that includes scientific computing, process control, information retrieval, etc.

2. Resource sharing.

Resource sharing is one of the main purposes for people to build computer networks. Computer resources include hardware resources, software resources, and data resources. The sharing of hardware resources can improve the utilization rate of equipment and avoid repeated investment in equipment, such as using computer networks to establish network printers; The sharing of software resources and data resources can make full use of existing information resources, reduce labor in the process of software development, and avoid duplicate construction of large databases.

3. Centralized management.

Computer Network Technology.

The development and application have made changes in modern office methods and management. At present, there are many management information systems and office automation systems.

Through these systems, centralized management of daily work can be realized, work efficiency can be improved, and economic benefits can be increased.

4. Realize distributed processing.

The development of network technology has enabled distributed computing.

It is possible. For large problems, they can be divided into many small problems, which are completed separately by different computers, and then concentrated to solve the problem.

5. Load balancing.

Load balancing is when work is evenly distributed among computer systems on the network. The network control center is responsible for distribution and detection, and when a computer is overloaded, the system automatically shifts the load to a lighter computer system for processing.

It can be seen that the computer network can greatly expand the function of the computer system, expand its application range, improve reliability, provide convenience for users, and also reduce the cost and improve the performance ratio.

Data communication and centralized processing, resource sharing, distributed information processing, improving the reliability and availability of computer systems.

1. Network. It is to use physical links to connect various isolated workstations or hosts together to form a data link, so as to achieve the purpose of resource sharing and communication. Communication is the exchange and transmission of information between people through some kind of **. Network communication generally refers to network protocols.

2. Network protocol.

The network protocol is the bridge of communication and exchange between networks, and only computers with the same network protocol can communicate and exchange information. This is just like the various languages used to communicate between people, and only when the same language is used can communication be normal and smooth. From a professional point of view, a network protocol is a convention that a computer must abide by when communicating in a network, that is, a communication protocol.

It is mainly to stipulate and formulate standards for the rate, transmission, structure, transmission control steps, error control, etc. of information transmission.

3. Computer network.

It refers to a computer system that connects multiple computers with independent functions and their external devices with different geographical locations through communication lines to realize resource sharing and information transmission under the management and coordination of network operating systems, network management software and network communication protocols. Communication using computer networks is called network communication.

A computer network is a system that uses communication equipment and lines to connect multiple computer systems with different geographical locations and independent functions, and realizes network hardware, software and resource sharing and information transmission with well-functioning network software. Simply put, it is a system that connects two or more computers to communicate.

Computer networks are primarily made up of general-purpose, programmable hardware that is not specifically designed to serve a specific purpose, but can be used to transmit many different types of data and support a wide range of growing applications.

Characteristics of computer networks

1. Reliability: In a network system, when a computer fails, another computer in the system can immediately replace it to complete the task. Similarly, when one link of the network fails, other communication links can be selected to connect.

2. High efficiency: The computer network system gets rid of the limitations of data transmission of the central computer control structure, and the information transmission is fast and the system is real-time. The connected computers in the network system can transmit data information to each other, so that users who are far away can exchange data instantly, quickly, efficiently and directly.

3. Independence: The connected computers in the network system are relatively independent, and the relationship between them is both interconnected and independent of each other.

4. Expandability: In the computer network system, people can easily and flexibly access the new computer, so as to achieve the purpose of expanding the function of the network system.

6. Distribution: The computer network can interconnect computers distributed in different geographical locations, and can implement distributed processing of large-scale and complex comprehensive problems.

7. Easy to operate: For computer network users, mastering the network use technology is simpler than mastering the mainframe use technology, and the practicability is also very strong.

1. Definition of computer network: Computer network refers to a computer system that connects multiple computers and their peripheral devices with independent functions in different geographical locations through communication lines to achieve resource sharing and information transmission under the management and coordination of network operating systems, network management software and network communication protocols.

Second, the function of the computer network: The main purpose of the computer network is to realize the sharing of resources, network communication, and centralized management of computers between computers. In addition, there are functions such as load balancing, distributed processing, and improving system security and reliability.

Third, the characteristics of computer network: reliability, high efficiency, independence, scalability, cheapness, distribution.

The characteristics of computer network are that it can realize the rapid transmission and centralized processing of data and information, can share computer system resources, improves the reliability and availability of computers, and can balance the load and cooperate with each other.

1. Computer network refers to a computer system that connects multiple computers and their peripheral devices with independent functions in different geographical locations through communication lines to realize resource sharing and information transmission under the management and coordination of network operating system, network management software and network communication protocol.

2. The computer network is a collection of qualified computers interconnected by lines, to be precise, it is to connect the computers, terminals and their ancillary equipment with independent working ability distributed in different geographical locations with communication equipment and communication lines, and configure network software to realize the system of computer resource sharing.

3. The classification of computer networks is the same as the general classification method of things, and can be classified according to the different properties and characteristics of things, that is, the attributes of things. In general, the composition of a computer network basically includes: a computer, a network operating system, a transmission medium (which can be tangible or intangible, such as the transmission medium of a wireless network is space) and the corresponding application software.

The most important characteristics of computer networks are resource sharing, efficient information transmission and openness.

Resource sharing enables different computers to share data, hardware equipment, software resources, etc., and improve work efficiency and economic benefits through these resources.

The computer network also has the ability of efficient information transmission, touching, and transmission, which can realize the transmission and storage of a large amount of data, and ensure the reliability, high speed and security of information transmission through the protocol.

Computer network systems are open. This means that the computer network system can be interconnected with different software and hardware devices, and supports a variety of operating systems and application software to meet the needs of different users or application fields.

In the context of globalization and informatization, computer networks are becoming more and more important, and at the same time, they are encountering more and more severe security and privacy problems, so it is necessary to continuously strengthen technology research and development and management to ensure the security of communication systems and data.

Computer Features:

To be precise, it is a system in which computers, terminals and their ancillary equipment with independent working ability distributed in different geographical locations are connected with communication equipment and communication lines, and network software is configured to realize the sharing of computer resources.

Although there are various criteria for dividing network types, geographic segmentation is a common standard for network classification that is universally recognized. According to this standard, various network types can be divided into four types: local area network, metropolitan area network, wide area network and Internet.

The LAN is a small area, and the metropolitan area network is the interconnection of networks in different regions, but the point to be noted here is that the network division here is not strictly divided into geographical scopes, but can only be a qualitative concept. The following is a brief introduction to these types of computer networks.

The above content reference: Encyclopedia - Computer Network Omitted.

The most important characteristics of computer networks are resource sharing, efficient information transmission and openness.

1. Resource sharing, which can allow different computers to share data, hardware equipment, software resources, etc., and improve work efficiency and economic efficiency through these resources.

2. The computer network also has the ability of efficient information transmission, which can realize the transmission and storage of a large amount of data, and ensure the reliability, high speed and security of information transmission through the protocol.

3. The computer network system is open. This means that the computer network system can be interconnected with different software and hardware devices, and supports a variety of operating systems and application software to meet the needs of different users or application fields.

In the context of globalization and informatization, computer networks are becoming more and more important, and at the same time, Liangbu has also encountered more and more severe security and privacy problems, so it is necessary to continuously strengthen technology research and development and management to ensure the security of communication systems and data.