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Inside Windows® Server 2003 by William Boswell

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Functional Description of DNS Query Handling

It's important to have a fairly good idea of how DNS queries are handled before starting to architect your name resolution system (or change an existing system that is functioning properly). This topic contains step-by-step descriptions of DNS queries using several scenarios:

  • A query handled by an authoritative server

  • A query handled by a non-authoritative server

  • A reverse-lookup query

Knowing how DNS queries are handled helps when designing a DNS system and when integrating Windows Server 2003 name services into an existing DNS infrastructure.

Queries Handled by Authoritative Servers

Assume, for example, that a user at a Windows Server 2003 computer in the company.com domain pings a server called

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