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DATA COMMUNICATIONS

DATA COMMUNICATIONS. Examining the History of the Internet. What is a network?. A network is a group of computers linked by cables, telephone lines, or other communication media.

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DATA COMMUNICATIONS

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  1. DATA COMMUNICATIONS Examining the History of the Internet

  2. What is a network? • A network is a group of computers linked by cables, telephone lines, or other communication media. • The computers share a network server that stores files and programs that can be used by all the computers within the network.

  3. What is the Internet? • The Internet is the “network of networks.” • The Internet is a collection of computer networks that allows users to view and transfer information between computers all over the world.

  4. How did it start? • The Department of Defense in the 1960s developed a network of computers known as ARPAnet. • Researchers at colleges and universities quickly realized the usefulness of ARPAnet and started using it to share data.

  5. What is ARPAnet? • ARPAnet = Advanced Research Projects Agency Network • The network was established for military and scientific use. • Its main purpose was to maintain communications in case of a nuclear war or natural disaster.

  6. How did ARPAnet become the Internet? • In the 1980s, the military portion of the ARPAnet became a separate network known as MILnet. • The National Science Foundation funded a non-military system of supercomputers known as NSFnet. • Thousands of government, academic, and business computer networks were given remote access to NSFnet. • By the late 1980s, the term Internet was used to describe the information superhighway that was developed.

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