What is WWW ? How does it function ?

WWW stands for World Wide Web. The World Wide Web is an Internet system i.e., a set of programs, standards, and protocols that allows the multimedia and hypertext files to be created, displayed and linked on the Internet.

World Wide Web uses different technologies and protocols such as Hyper Text Markup Language (HTML), Hypertext Transfer Protocol (HTTP), web browser, internet etc. The basic functioning of WWW is as follows:

1. A client uses a web browser to make HTTP request to a web server to get some resource on World Wide Web.
2. This request reaches the web server via Internet.
3. The web server locates the required resource on the database and makes it available to the client via Internet.

For example, if the client enters the URL : http://www.edupillar.com/index.htm
in the browser, a request is sent to the web server whose domain name is edupillar.com. The server then fetches the page named index.htm and send it to the browser of the client.