The Internet can be used in in different ways: for distributing and retrieving information, for one-to-one, one-to-many and many-to-many communication, and for the access services. Accordingly, there are different services on offer. The most important of these are listed below.
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Headquartered in San Jose, USA, AboveNet Communications is a
http://www.above.net
Based at the University of California's San Diego Supercomputer Center, CAIDA supports cooperative efforts among the commercial, government and research communities aimed at promoting a scalable, robust Internet infrastructure. It is sponsored by the
TCP and IP are the two most important protocols and communication standards. TCP provides reliable message-transmission service; IP is the key protocol for specifying how packets are routed around the Internet.
More detailed information can be found
Every computer using
IP numbers are divided into three classes. Class A is restricted for big-sized organizations, Class B to medium-sized ones as universities, and Class C is dedicated to small networks.
Because of the increasing number of networks worldwide, networks belonging together, as