Monday, 24 September 2012

What is Internet and How it actually works?

The history of internet Began in the 1950s as a point to point communication between mainframe computers which was used for defence purpose. The internet was first developed by ARPANET, an American Company. The U.S defence administration used this facility to communicate at the time of emergency and other security related matters.
 Internet works by 2 concepts (TCP/IP)

TCP is Transmission Control Protocol: a protocol developed for the internet to get data from one network device to another; "TCP uses a retransmission strategy to insure that data will not be lost in transmission"
IP is Internet Protocol: the method by which information is sent between any two Internet computers on the Internet; the information is transferred to computers by using Internet Protocol address

Since the mid-1990s the Internet has had a drastic impact on culture and commerce, including the rise of near-instant communication by electronic mail, instant messaging, Voice over Internet Protocol (VoIP) "phone calls", two-way interactive video calls, and the World Wide Web with its discussion forums, blogs, social networking, and online shopping sites. The research and education community continues to develop and use advanced networks such as NSF's very high speed Backbone Network Service (vBNS), Internet2, and National LambdaRail. Increasing amounts of data are transmitted at higher and higher speeds over fiber optic networks operating at 1-Gbit/s, 10-Gbit/s, or more. The Internet continues to grow, driven by ever greater amounts of online information and knowledge, commerce, entertainment and social networking.


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