A web server refers to a program that resides on a certain type of computer on the Internet. When a web browser (client) connects to a server and requests a file, the server processes the request and feeds the file back to the browser, with accompanying information telling the browser how to view the file (ie, file type). Servers use HTTP (Hypertext Transfer Protocol) to communicate with client browsers, which is why they are often called HTTP servers.
- Web servers not only store information, but also run scripts and programs based on information provided by users through their Web browsers.
- The application layer uses the HTTP protocol.
- HTML (an application of Standard Generalized Markup Language) document format.
- Browser Uniform Resource Locator (URL).
