Lesson 8 Notes

Lesson 8 Notes - Lesson 8 Notes The Internet and Other...

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Unformatted text preview: Lesson 8 Notes: The Internet and Other Networks The Internet • Internet= inter connected net works • A worldwide network of interconnected business, university, government and scientific sites and networks • A network of networks: interconnected LANs and WANs using TCP/IP protocol • The World Wide Web; a subset • “the internet (WWW) is a sewer- raw, untreated, unpoliced” The Backbone of the Internet • In 1995, 13 worlwide root servers: 4 VW, 3 CA, 2 MD, 2 Europe, 1 UK, 1 Japan • Commercialization of the Internet ended the notion of a single “Internet Backbone” • Today, Internet Exchange Points (IXPs) form the top layer of the Internet- combination of root servers (NAP) and metropolitan area exchanges (MAE) • Each IXP is normally funded by all of its serviced Internet Service Provifers and is connected to other IXPs by mutual peering agreements • More than 250,000 different networks worldwide—connected Internet History • Initiated as a U.S. Defense Department research communications tool in 1969; Arpanet- for 385 research organizations • NSP inherited the internet in 1983 • Opened for commercial use in 1993...
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This document was uploaded on 02/05/2011.

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Lesson 8 Notes - Lesson 8 Notes The Internet and Other...

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