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Internet is a global network of networks connecting millions of computing devices worldwide. Today people
            and business around the world are using the resources of Internet to retrieve information, communicate and
            conduct business and access to vast variety of services and resources online.

            World Wide Web (WWW)

            The ‘World Wide Web’ is a framework for accessing the documents that are spread over millions of computing
            devices over the Internet.
                was introduced in      by the  nglish  hysicist  Sir  im  erners  ee. It evolved with the purpose of
            creating a simple way to provide access to different types of documents on the network  without searching
            through index or directories of files or without copying documents from one computer to another on network.
             herefore  a way to  link  documents that were stored in different locations in different computers on the

            network but under a single frame was established and thus, WWW evolved.
            WWW is a  wide-spread  information  retrieval  service  which  enables to  access, gather,  store  and  display
            information in form of text, photographs,  graphics, audio, video, etc., that have been  uploaded on the
            Internet. It allows the multimedia and hypertext files to be displayed and linked on the Internet.


            Features of WWW
            Following are some of the features of WWW:

              User Friendly: WWW resources are compatible and can be used easily with the help of web browsers.
              Data Sharing:  hrough      users can send text files  spreadsheets  documents  presentations  audio
              files  video files  etc.  to others.

              Multimedia documents: Multimedia documents are  the  information  in the form of an  audio,  video,
              graphics, animations and text which are viewed in the web pages. WWW allows and supports the Internet
              users to create, link or display multimedia web pages.

              Interactive: WWW provides a graphical interface. It supports and enables convenient interaction between
              the users and the server through hyperlinks and input boxes like radio buttons, check boxes, text boxes,
              etc.
              Accessibility: WWW is accessible by anyone irrespective of location, community, nationality, profession,
              etc. A user just needs computer, modem and Internet connection to use its resources.

              Caching: If a user revisits the same web page in a short interval, it may not be need to recall the data of
              the web page from the source web server. Caching enables to store data temporarily in the memory. It
              enables to revisit or re-browse the same website quickly while operating on the same computer before
              switching it off.     helps to reduce the  uantum of transferring web tra c on the Internet by caching.

            To Access Internet

            One needs to get an Internet connection to connect with its resources. Internet connection is provided by
            Internet Service  roviders  IS   such as  harat Sanchar Nigam  imited   SN     irtel   eliance  io  etc.
            The connection to the Internet depends on how we plan to use the Internet.  Since our main focus is on
              Ns here  we shall focus on dial-up and IS N  Integrated Services  igital Networks  connections.  arge

            companies may have their own dedicated high-bandwidth connections, which are more complex than the
            one being discussed here.



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