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UNIT-1 NETWORKING





                                             NETWORKING                                                     1








                 In recent times, people have used various communication methods to share information and
                 knowledge. These methods include postage, telephone, couriers, meetings, newsrooms, training
                 sessions, conferences, and more.

                 But, with the invention of computers, extraordinary development has taken place in the field of
                 communication and now the sharing of information has become quicker and easier, irrespective of
                 the geographical location of recipients around the globe, thereby replacing the traditional media
                 of communication.


























                   INTERNET

                 In the  present  era,  we commonly use e-mail, web chatting,  e-learning,  video  conferencing,
                 newsgroup, e-commerce, e-reservation, etc. for our day to day tasks.

                 All such terms must make you curious to explore more about them. These terms are related to
                 sharing of information among millions of computers around the globe which is commonly termed
                 as ‘INTERNET’.
                 Internet is an interconnected Wide Area Network (WAN) of millions of computers that are linked
                 together around the world. With Internet, we can share information in the form of data, graphics,
                 sound, software, text, etc. instantly as and when required with a minimum overhead cost.

                 Internet is also referred to as a “Network of Networks”. It establishes a high level of connectivity
                 which has resulted in an unparalled degree of fastest, easiest and cheapest ways to transfer or
                 share data and information around the globe. It provides access to communication services and
                 information resources to millions of users around the globe, round the clock.


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