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The Internet acts as a carrier for several different services, each with its own
                  distinct features and purposes. The most commonly used Internet services

                  are: World Wide Web, electronic mail, news, file transfer protocol, chat, instant
                  messaging, online services and peer-to-peer services.

                      WORLD WIDE WEB


                  The World Wide Web (WWW) is a large information system where you can surf
                  and get information. It consists of several public and private websites which may

                  be interlinked and accessible over the Internet worldwide. WWW is also known as
                  Web.
                  Many people believe that the World Wide Web and the Internet are the same

                  thing, but this is not correct. In fact, these are two different things. The Internet
                  is the global network that connects computers, while the Web is the collection of
                  websites and webpages accessed through that network.

                  Information on the Web is stored in the form of Web pages. A Web page is
                  a hypertext document. A collection of related web pages is called website.
                  Websites are housed on Web servers. A Web server is an Internet host computer

                  that often store thousands of individual Web pages. Copying a Web page onto
                  a server is called publishing the Web page. This process is also called as posting
                  or uploading.

                      HOW THE WEB WORKS?


                  Web documents can be linked together because they are created in a format known
                  as hypertext. Hypertext  system provides an easy way to manage large collections
                  of data, which can include text files, pictures, sounds, movies and more. To support
                  hypertext  documents,  the  Web uses a  special protocol,  called  the  Hypertext

                  Transfer Protocol (HTTP). The language allows a document’s author to embed
                  hypertext links—also called hyperlinks or just links in the document. HTTP and
                  hypertext links are the foundations of the World Wide Web.

                      USING WEB BROWSER


                  For several years, the Web remained a tool used by scientific researchers. But in
                  1993, developers at  the  National  Center for Supercomputing Applications
                  (NCSA)  created  Mosaic, a point and  click Web browser.  A  Web browser  is a
                  software application designed to find hypertext documents on the Web and then

                  open the documents on the user’s computer. Commonly used web browsers are
                  Google Chrome, Internet Explorer, Opera, Mozilla Firefox, etc.




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