c/s is an important network computer mode, what is its meaning

c/s is an important network computer mode, its meaning is: client/server mode. The full name of c/s is Client/Server, which is a mode for computer software to work together; it usually adopts a two-layer structure, the server is responsible for data management, and the client is responsible for completing interactive tasks with users.

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

c/s is an important network computer mode. What does it mean?

c/s is an important network computer mode, its meaning is: client/server mode.

c/s (Client/Server) refers to the client/server mode, which is a mode in which computer software works together.

The C/S structure usually adopts a two-layer structure. The server is responsible for data management, and the client is responsible for completing interactive tasks with users.

The client is connected to the server through the LAN, accepts the user's request, and makes a request to the server through the network to operate the database. The server accepts the client's request and submits the data to the client. The client calculates the data and presents the results to the user. The server must also provide complete security protection and data integrity processing and other operations, and allow multiple clients to access the server at the same time, which places high demands on the server's hardware data processing capabilities.

In the C/S structure, the application program is divided into two parts: the server part and the client part. The server part is the information and functions shared by multiple users, and performs background services, such as controlling the operation of shared databases; the client part is exclusive to users and is responsible for executing foreground functions and has powerful functions in terms of error prompts and online help. function, and can switch freely between subroutines.

The key elements of the C/S model are: the client rather than the service provider initiates the action; the server passively waits for requests from the client; the client and the server are connected through a communication channel. The communication link between two processes is called a connection. Connections behave internally as some buffers and a set of protocol mechanisms, and externally show higher reliability than no connections. A complete inter-network process communication needs to consist of two processes, and can only use the same high-level protocol. Therefore, a complete inter-network communication requires a protocol, identified by five elements: local address, local port number, remote port number, and remote address.

The C/S structure is technically mature. Its main features are strong interactivity, safe access mode, fast response speed, and conducive to processing large amounts of data. However, the C/S structure lacks versatility. System maintenance and upgrades require redesign and development, which increases the difficulty of maintenance and management. Further data expansion is more difficult, so the C/S structure is limited to small local area networks.

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