The main functions of computer networks include centralized management and what

The main functions include centralized management and distributed processing, data communication, resource sharing, and load balancing. Distributed processing uses network technology to connect many minicomputers or microcomputers into a high-performance computer system, giving it the ability to solve complex problems. Data communication can use data transmission technology to transfer data information between two terminals according to a certain communication protocol. Resource sharing can make full use of existing information resources, reduce labor in the software development process, and avoid repeated construction of large databases. Load balancing means that work is evenly distributed to each computer system on the network.

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

Computer network refers to the connection of multiple computers and their external devices with independent functions in different geographical locations through communication lines. Under the management and coordination of network operating systems, network management software and network communication protocols , a computer system that realizes resource sharing and information transfer.

Computer networks are mainly interconnected by some general-purpose, programmable hardware that is not designed to achieve a specific purpose (for example, transmitting data or video signals). These programmable hardware can be used to transfer many different types of data and support a wide and growing number of applications.

Computer networks have five main functions: centralized management, distributed processing, data communication, resource sharing, and load balancing.

Centralized Management

The development and application of computer network technology has caused changes in modern office methods, business management, etc. At present, there are many management information systems, office automation systems, etc., through which centralized management of daily work can be achieved, work efficiency can be improved, and economic benefits can be increased.

Distributed processing

The development of network technology makes distributed computing possible. For large-scale topics, they can be divided into many small topics, which are completed by different computers respectively, and then concentrated together to solve the problem.

Distributed processing is to connect multiple computers in different locations, or with different functions, or with different data through a communication network, and coordinately complete large-scale tasks under the unified management and control of the control system. Computer systems for information processing tasks.

Distributed processing means that multiple connected computers each undertake different parts of the same work task. Under human control, they run at the same time and jointly complete the same work task.

A processing method in which multiple autonomous, interconnected information processing systems work together to complete the same task under the coordination of an advanced operating system.

Using network technology, many minicomputers or microcomputers can be connected into a high-performance computer system, giving it the ability to solve complex problems.

Data communication

Data communication is one of the most important functions of computer networks. Data communication is a communication method and communication service that uses data transmission technology to transfer data information between two terminals according to a certain communication protocol. It can realize the transmission of data information between computers, computers and terminals, and terminals. It is the third largest communication service after telegraph and telephone services. The information transmitted in data communication is expressed in the form of binary data. Another characteristic of data communication is that it is always connected with telematics. It is a generalized information processing including scientific computing, process control, information retrieval, etc.

Resource sharing

Resource sharing is one of the main purposes for people to establish computer networks. Computer resources include hardware resources, software resources and data resources. The sharing of hardware resources can improve the utilization 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 software development process, and avoid Repeated construction of large databases.

Load balancing

Load balancing means that work is evenly distributed to each computer system on the network. The network control center is responsible for distribution and detection. When a computer is overloaded, the system will automatically transfer the load to a lighter computer system for processing.

It can be seen that computer networks can greatly expand the functions of computer systems, expand their application scope, improve reliability, provide convenience to users, and at the same time reduce costs and improve performance-price ratio.

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