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TCP/IP Guide by Charles M. Kozierok

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DNS Name Resolution Process

In the first half of this chapter, I have described what name resolvers do, explained the basic top-down resolution process using iterative and recursive resolution, and discussed how local resolution and caching are used to improve resolution performance. Now it's time to tie all this background material together and see how the name resolution process works as a whole.

As usual, the best way to do this is by example. Here, I will actually combine two examples I have used earlier: the fictitious company XYZ Industries and the nonexistent college, Googleplex University.

A Simple Example of DNS Name Resolution

Let's say that XYZ Industries runs its own DNS servers for the xyzindustries.com zone. The master name server is ...

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