Performing Recursive Queries

Recursive queries are most often performed by resolvers, or clients, that need a specific name resolved by a DNS server. Recursive queries are also accomplished by a DNS server if forwarders are configured to be used on a particular name server. A recursive query essentially asks whether a particular record can be resolved by a particular name server. The response to a recursive query is either negative or positive. Figure 10.11 shows a common recursive query scenario.

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Figure 10.11. Recursive and iterative queries.

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