![]() However, It can, be defined in many ways as follows:, ![]() , , By the time, with invention of new, technologies such as TCP/IP protocols, DNS,, Internet, Internet is defined as an Information super Highway, to access information over the web., , In 1972, the ARPANET spread over the globe, with 23 nodes located at different countries, and thus became known as Internet.,,., , Initially, there were only four nodes, formally, called Hosts.,,.Now, they highly, rely on computer networks and internetwork.,, ![]() Data, Communication and network have changed the way, business and other daily affair works. UNIT –II, COMPUTER NETWORKS NOTES,, Evolution of Networking, Modern world scenario is ever changing.
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