1, resource **** enjoyment: the most important function of computer network is to realize the network resource **** enjoyment. Resources **** enjoy the construction of information technology is of great significance. From the system input considerations, network users can *** enjoy the computer network hardware resources, such as printers, scanners, etc., which is significant to save the cost of hardware equipment, resources *** enjoy the function not only so that the network users can overcome the differences in geographic location, *** enjoy the resources in the network, to provide users with a great deal of convenience, but also the resources *** enjoy the ability to effectively improve the utilization rate of network resources.
2, data communication: the network of computers and computers to exchange a variety of data and information, and according to the need to classify or centralized processing of this information, which is the computer network provides the most basic data communication function. Data communication provides a means of rapid exchange of information, such as e-mail, e-commerce, distance education, telemedicine and so on.
3, load balancing: the use of computer network technology, in the network operating system scheduling and management, when a host system is overloaded, you can transfer some of the tasks through the network to a lighter load host system to deal with, in order to equalize the load, reduce the local burden, improve the utilization rate of the equipment and the system, increase the availability of the entire system.
4, distributed processing: the development of network technology, so that distributed computing and processing has become possible. For comprehensive large-scale problems, you can use appropriate algorithms, the task will be assigned to multiple computers in the network, by these computers division of labor to complete, such as distributed database systems. The use of computer network technology can also connect many small machines or microcomputers into a high-performance computer system with mainframe processing capabilities, so that it has the ability to solve complex problems, such as grid computing technology.
5, improve the reliability of the system: in a single system, if a component or computer failure, you must replace resources to maintain the system continues to operate, otherwise the system will not be able to carry out normal work. In a computer network, because the devices are connected to each other, when a machine fails, it is possible to find other machines through the network to replace the machine; and each resource (especially programs and data) can be stored in multiple locations, the user can access a resource within the network through a variety of ways, thus avoiding the impact on the user when a single machine fails. As a result, the reliability of the entire network system is greatly improved over that of a stand-alone system.
6, computer network is the use of communications equipment and lines will function independently of multiple computer interconnections, through the function of the management software to realize the network of resources **** enjoy and information interaction. The network will bring people a rich experience with the help of text reading, picture viewing, audio and video playback, download and transmission, games, chat and other software tools from text, pictures, sound, video and other aspects.