ARPANET (Advanced Research Projects Agency Network), created by a small research team at the head of the Massachusetts Institute of Technology and the Defense Advanced Research Projects Agency (DARPA) of the United States Department of Defense, was the world's first operational packet switching network, and one of the networks that came to compose the global Internet. The packet switching of the ARPANET was based on designs by Lawrence Roberts, of the Lincoln Laboratory.

Packet switching, now the dominant basis for data communications worldwide, then was a new and important concept. Data communications had been based on the idea of circuit switching, as in the old, typical telephone circuit, wherein a dedicated circuit is occupied for the duration of the telephone call, and communication is possible only with the single party at the far end of the circuit.

With packet switching, a data system could use one communications link to communicate with more than one machine by disassembling data into datagrams, then gather these as packets. Thus, not only could the link be shared (much as a single post box can be used to post letters to different destinations), but each packet could be routed independently of other packets.

From Wikipedia under the GNU Free Documentation License
Fri Sep 3 08:28:08 2010

how does arpanet work?
Q. give me your educated answer.
Asked by michael s - Wed Sep 16 20:56:44 2009 - - 2 Answers - 0 Comments

A. This is a huge answer, your better off reading up on Wiki
Answered by EDGE Tech Corp - Wed Sep 16 21:05:58 2009

Question about ARPANET?
Q. The ARPANEt was developed to: monitor traffic on the Internet backbone and improve throughput speeds Ensure the safety of military communications and improve communication between computers. manage the assignment of IP addresses and domain names ensure the commercial success of the World Wide Web. Which one is the right answer?
Asked by hooah - Sun Apr 6 13:46:33 2008 - - 2 Answers - 0 Comments
Looking for the title of a late 70's book about a rogue computer program that becomes self aware...?
Q. I read this book in the late 70's, early 80's about a college student who writes a program described as a search worm type program which goes out into the Internet/ARPAnet and later contacts the student when it becomes self aware and intelligent. I'd love to know the name of the book and/or author.
Asked by Hami in Miami - Fri Mar 6 22:10:32 2009 - - 2 Answers - 0 Comments

A. Try whatsthatbook.com
Answered by The Pencil - Fri Mar 6 22:21:56 2009

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