Internet: Backbone - Research Article from Macmillan Science Library: Computer Sciences

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Backbone Basics

A backbone is a high-speed wide area network (WAN) connecting lower speed networks. A country typically has several backbones linking all of its Internet Service Providers (ISPs). In the United States, these backbones are linked in a small number of interconnection points. Finally, national backbones interconnect in a mesh with other countries, usually with international trunk lines via land, undersea, or satellite.

The current Internet is a loose connection of TCP/IP networks organized into a multilevel hierarchy using a wide variety of technologies. At the lowest level, computers are connected to each other, and to a router, in a local area network (LAN). Routers can be connected together into campus, metropolitan, or regional networks. Non-backbone ISPs exist solely to provide Internet access to consumers. For Internet connectivity, at some point all non-backbone networks must connect to a backbone ISP (the highest level). It is...

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This section contains 1,603 words
(approx. 6 pages at 300 words per page)
Buy the Internet: Backbone Encyclopedia Article
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Macmillan Science Library: Computer Sciences
Internet: Backbone from Macmillan Science Library: Computer Sciences. Copyright © 2001-2006 by Macmillan Reference USA, an imprint of the Gale Group. All rights reserved.
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