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Name systems can be considered as the diplomats of the networking protocol stack. Just as a political diplomat is skilled at speaking multiple languages and ensuring good communications between those who may view the world in different ways, name systems bridge the gulf between the numeric addresses that computers like to use and the simpler names that humans prefer.

Before looking at specific name systems, it makes sense to discuss them generally. This will help you to understand the reasons why these systems are important and the concepts that underlie all name systems, regardless of their ...

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