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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 worldwideconnected 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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