Page 47 - Computer Genius Class 05
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As we know that the Internet is a computer network that connects hosts and end 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 uni ersities and de ence contractors. The resulting net or   as 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   or  se eral  different  ser ices   each   ith  its  o n  distinct   eatures  and

                 purposes. The most commonly  used Internet  services are:  World Wide Web, electronic
                 mail   ne s   file  trans er  protocol   chat   instant  messaging   online  ser ices  and  peer to
                 peer services. January 1, 1983 is considered the o cial  irthday o  the  nternet.  e ore
                 this, the computer networks did not have a standard way to communicate with each other.
                 A new communications protocol was established named Transmission Control Protocol/
                 Internet Protocol (TCP/IP). The T      allo s computers connected to different net or s
                 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 t o different things. The Web is a service (a system for accessing information)

                 that is supported by the Internet, a system of interconnected networks.



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