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Chapter Profile
                 7                            Chapter Profile                         The Internet


                                                                                        World Wide Web
                                                                                          How does the Web Work?

                                                                                           Using Web Browser

                                Internet and                                                 Using URLs
                                                                                               E-Mail

                                          E-mail                                                  Emoticons and Acronyms












                  As we know that the Internet is a computer network that connects hosts and systems throughout the
                  world. In this chapter, we will learn about the Internet and e-mail service of the Internet in detail.


                         THE INTERNET

                  The seed of the Internet was planted  in  1969 when the  Advanced Research Projects Agency
                  (ARPA)  of  the  United  States  Department  of  Defense  began  connecting  computers  at  different
                  universities  and  defense contractors. The resulting  network  was called  Advanced  Research
                  Projects Agency Network (ARPANET).
                  In the beginning, ARPANET was a large network serving only a handful of users, but it expanded
                  rapidly.  Initially,  the  network included  four  primary host  computers. 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. January 1, 1983 is considered
                  the official birthday of the Internet. Before this, the computer networks did not have a standard
                  way  to  communicate  with  each  other.  A  new  communication  protocol  was  established  named
                  Transmission  Control  Protocol/Internet  Protocol (TCP/IP). The TCP/IP allows computers
                  connected to different networks communicate with each other.


                         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
                  Web is a service (a system for accessing information) that is supported by the Internet, a system
                  of interconnected networks.

                  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 a website. Websites are housed on  Web servers.
                  A Web server is an Internet host computer that often stores thousands of individual Web pages.



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