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What is an Internet Address?

Messages are transmitted from one computer to another;
 every computer in the Internet must have a unique and specific address. An Internet or
 IP address, as it is sometimes called, consists of four numbers separated by periods.
 The smallest address would be 0.0.0.0 while the biggest would be
 1234.5678.9101.1121. Only computers are expected to remember all these numbers
 without getting confused.