Q. How to use Http and World Wide Web?

Http and World Wide Web

One of the most frequently used services on the Internet is the World Wide Web (WWW). The application protocol which makes the web work is Hypertext Transfer Protocol or HTTP. Don't confuse this with the Hypertext Markup Language (HTML). HTML is language used to write web pages. HTTP is the protocol which web browsers and web servers use to communicate with each other over Internet. It's an application level protocol since it sits on top of the TCP layer in the protocol stack and is used by specific applications to talk to one another. In this case applications are web browsers and web servers.

HTTP is a connectionless text based protocol. Clients (web browsers) transmits requests to web servers for web elements like web pages and images. After request is serviced by a server, connection between server and client across the Internet is disconnected. A new connection should be made for each request. Most protocols are connection oriented. This means that two computers communicating with each other keep connection open over the Internet. HTTP doesn't however. Before an HTTP request can be made by a client, a new connection should be made to the server.