World Wide Web in brief

WWW (World Wide Web) is a network of information. This web is based on three mechanism to provide all information rapidly. These are:

  1. URI/URL (Uniform Resources Identifier)
  2. HTTP (Hypertext Text Transfer Protocol)
  3. HTML (Hypertext Markup Language)

1. URI/URL (Uniform Resource Identifier):

On the web available many types of document, image, audio, video or other types of file and each stored on the specific location called URI or URL.

Any URI or URL is consist of three parts:

URI syntax:

Scheme :// host.domain-name.port/path/file

  • Scheme : It is a mechanism that is used to access resources. For example ftp, http, telnet, gopher, etc.
  • Host : After the scheme define host name that is the name of host where locate resources. Www is one host name that use commonly.
  • Domain Name : Its is identifier that identify our resource. This is easy name of our site.
  • Path/File : Path and file is the directory or sub-directory name and file is a particular file store on the server.

2. HTTP (Hypertext Transfer Protocol) :

This is underlying protocol that used by WWW. This protocol is defined how to data formatted and transmit over the network. Http also called stateless protocol because in this protocol each command is executed independently without any knowledge of command that execute before it.

3. HTML (Hypertext Markup Language) :

HTML is a computer language devised to allow website creation. These websites can then be viewed by anyone else connected to the internet. It is relatively easy to learn, with the basics being accessible to most people in one sitting and quite powerful in what it allows you to create. It is constantly undergoing revision and evolution to meet the demands and requirements of the growing internet audience under the direction of the w3c, the organization charged with designing and maintaining the language.

The definition of HTML is Hypertext Markup Language.

  • Hypertext is the method by which you move around on the web – by clicking on special text called hyperlinks which bring you to the next page. The fact that it is hyper just means it is not linear – i.e. you can go to any place on the internet whenever you want by clicking on links – there no set order to do things in.
  • Markup is what HTML tags do to the text inside them. They mark it as a certain type of text.
  • HTML is a language, as it has code-words and syntax like any other language.