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Chapter 11. Internet and TCP/IP Connecti... > What Is the Internet, Anyway?

What Is the Internet, Anyway?

If you have, perhaps, been stranded on a desert island for the last five years or so: The Internet is the global network of computers, an amazing worldwide phenomenon. To appreciate what the Internet has become, you might appreciate a bit of historical background.

In the 1960s, the United States Department of Defense Advanced Research Project Agency commissioned the development of a network technology that could endure missing links, lost data, and bad connections yet still function. This network, called the ARPAnet, was installed between a few major defense contractors, universities, and government agencies. The ARPAnet used special-purpose network routing computers and cross-country leased data lines, and was the origin of the Transmission Control Protocol/Internet Protocol (TCP/IP) used on the Internet today.


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