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DNS: The Domain Name System |
The Internet delivers instant access to resources all over the world, and each of those computers or sites has a unique name (e.g., google.com). However, anyone who has tried to find a friend or a lost child in a crowded stadium knows that simply knowing a name and yelling it loudly is not enough. Essential to finding anything (or anyone) is an organized system for communicating, updating, and distributing names and their locations.
Users and user-level programs like to refer to resources by name (e.g., amazon.com), but low-level network software understands only IP addresses (e.g., 54.239.17.6). ...
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