Introduction to WEB Servers.

The WEB server, also known as the WWW(WORLD WIDE WEB) server, mainly functions to provide online information browsing services. WWW is a multimedia information query tool of the Internet. It is a service that has developed on the Internet in recent years and is also the fastest-growing and most widely used service at present. It is precisely because of the WWW tool that the Internet has developed rapidly in recent years and the number of users has grown rapidly. A Web server is a program that can provide documents to the browser that makes the request.

Overview:

1. A server is a passive program: it only responds when requests are made by browsers running on other computers on the Internet.

2. The most commonly used Web servers are Apache, Nginx and Microsoft's Internet Information Services (IIS).

3. A server on the Internet, also known as a Web server, is a computer with an independent IP address on the Internet, which can provide various Internet services such as WWW, Email and FTP to clients on the Internet.

4. A Web server refers to a program residing on a certain type of computer on the Internet. When a Web browser (client) connects to the server and requests a file, the server will handle the request and feed the file back to the browser. The accompanying information will tell the browser how to view the file (i.e., the file type). Servers use HTTP (Hypertext Transfer Protocol) to exchange information with client browsers, which is why they are often called HTTP servers.

Web servers can not only store information, but also run scripts and programs based on the information provided by users through Web browsers.