Describe the Internet backbone. What are network access points (NAPs) and how do they relate to the ...

The Internet backbone is a foundation network linked with fiber-optic cables that can support very high bandwidth. It is called a backbone because it supports all the other networks that form the Internet, just as the human backbone is the foundation of the nervous system. The Internet backbone is made up of many interconnected government, academic, commercial, and other high-capacity data routers.

Several private companies operate their own Internet backbones that interconnect at network access points (NAPs). NAPs determine how traffic is routed over the Internet. Local area networks (LANs) serve as localized Internet connections, and they use NAPs to connect to the Internet backbone.

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