Resource sharing functions of computer networks include

Resource sharing is the most important role of modern computer networks, which includes software sharing, hardware sharing and data sharing.

In a network, multiple computers or multiple users on the same computer use hardware and software resources at the same time.

Usually, the resources required by multiple users at the same time always exceed the number of actual physical resources of the system. However, the use of logical (or virtual) resource allocation to achieve resource sharing can better handle this contradiction, thereby improving computer performance. usage efficiency. (Recommended learning: web front-end video tutorial)

But it must be coordinated and managed by the operating system to avoid confusion. There are two main methods: unified management and distribution by the operating system, which is suitable for multiple users in the same computer system; users notify each other, which is suitable for network systems.

Resources" refers to all software, hardware and data resources in the network. Sharing" refers to the fact that users in the network can enjoy some or all of these resources.

For example, air tickets and hotels in some regions or units can be used by the entire network; software designed by some units can be called where needed for a fee or after completing certain procedures; some external equipment such as Printers can be user-oriented so that these hardware devices can be used in places where these devices are not available.

Resource sharing means that multiple users share hardware and software resources in a computer system. In the network system, the main resources that end users can share include processor time, shared space, various soft equipment and data resources, etc. Resource sharing is one of the main goals achieved by computer networks.

Two basic principles of resource sharing:

1. The law of large numbers:

The law of large numbers says: : If the number of users is large, and their resource usage requirements are sudden and random, then when all users are considered as a whole, the user's overall resource usage requirements will become quite smooth and stable. And it's also predictable. [3]

2. Economies of Scale

Economies of scale say: when the resources and the number of users in a system increase in proportion at the same time, under a certain Within the scope, the larger the scale of the system, the more economical the system is.

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