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    10                             Internet services

                           Goal Glimpse

                               Network                                         HTTP
                               Internet Explorer                               World Wide Web

                               Search Engines                                  Chatting
                               Video Conferencing                              E-commerce
                               E-learning                                      E-banking

                               Internet Free Calls                             Email

                      In this chapter you will learn about some of the amazing Internet services like chatting, video
                      conferencing, e-mail, e-commerce, e-learning and more.

                            NETWORK

                      A  network is a  system that  connects multiple computers,
                      devices or systems together to enable communication, data
                      sharing  and  resource  sharing.  Networks  allow  devices  to
                      exchange  information  and  work  collaboratively  by  sharing

                      resources such as printers, files, Internet access or storage.
                      The connections in a network  can be established through
                      wired media (like Ethernet or fiber optic cables) or wirelessly
                      (using radio waves such as Wi-Fi or Bluetooth).

                      There  are  different  types of networks.  Some are  small,  like

                      in a home or school, while others are huge, like the Internet,
                      which connects millions of devices across the world.
                      The Beginning of the Internet: ARPANET

                      The  Advanced  Research Projects  Agency  Network  (ARPANET)  was  the  world’s  first  major
                      computer network. It began in 1969, created by the U.S. Department of Defence. Its goal was
                      to help scientists and researchers at different universities and government labs communicate
                      and share information over long distances.

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