Internet is the largest network spread across the word linking together thousands of individuals networks of universities, educational and research institutions, military and government agencies, nonprofit organization, industrial and financial organization, and Internet Service Provider (ISP) that provides services to individual to access the network. Internet is world wide networks that use the TC/IP (Transmission Control Protocol/ Internet Protocol) network protocols for data transmission and exchange. In a nutshell, Internet is a network of networks.
*TIP: Protocol is standard set of rules and regulations used to share resources and transmit the data between different computers.
Internet is not owned by anyone, but is governed by collective efforts of every organization whose network is connected with internet. Internet offers many services like WWW ( World Wide Web ), e-mail, discussion group, chat, file sharing, and e-commerce.
History of Internet
Internet was originally developed in 1969 for the U.S. Department of Defense with the goal of developing network architecture for military command-and-control that could survive in nuclear war.
The research for Internet was founded from Advance Research Projects Agency (ARPA), which allowed researcher to experiment with different methods for computer to communicate with each other. As a result of this research, they had developed the network which was known as Advance Research Project Agency Network (ARPANET). ARPANET used packet-switched networks to transform information between different networks. ARPANET was preliminary used by researcher and scientist to communicate with each other. Many other countries began to join with ARPANET in early 1970s and within decade it was widely accessible by many researcher, administrators, and studdents all around the world.
During the 1980s, networks like MILNET (Military Network), BITNET (Because It's Time Network), CSNET (Computer Science Network) and many more were developed to serve different communities and organizations.
In 1986, the National Science Foundation (NSF) developed network of different users of ARPANET which was known as National Science Foundation Network (NSFNET). NSFNET became the backbone of the Internet, replacing the original ARPANET. In 1990, NSFNET was sold to major telecommunication companies and due to that the Internet backbone had become completely commercial. Today's Internet is nothing but interconnection of all this network.
