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Sometimes called "The Net", the Internet is a publicly accessible worldwide system of computer networks that enable people to send and receive information from other computers. The Internet uses the TCP/IP network protocols to facilitate data transmission.

There are three levels of hierarchy including backbone networks, mid-level networks and stub networks. These include commercial (.com or .co), university (.ac or .edu) and other research networks (.org, .net).

The origins of the Internet began in 1962 where a government agency called RAND was commissioned by the US Air Force to develop a military research network that could survive a nuclear attack. Packet Switching was invented as a way of sending data.

The first email program was created in 1972. The TCP/IP Protocol was developed in 1973 and by 1983 it became the core Internet protocol.

The same year of 1983 saw the development of the Domain Name System (DNS) by the University of Wisconsin. The domain name system made it easier for people to access other servers rather than having to remember the corresponding long IP numbers.

In 1992 the World Wide Web was released by CERN and the Internet Society was chartered who controls the Internet. The first graphical user interface to the WWW called “Mosaic for X” was released.

By 1996, most Internet traffic was carried by independent ISPs. The Internet Society is building a new TCP/IP that will allow billions of addresses rather than the limited supply that we have today.