What is the purpose of an iterative DNS query during name resolution?
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Correct answer: Allow a DNS client to query multiple DNS servers until the answer is found..
Why this is the answer
An iterative DNS query means the DNS server responds with the best information it has, or it refers the client to another DNS server that might have the answer. The client then queries that next server directly. This process continues until the client finds the authoritative DNS server for the requested domain or receives a "not found" response. This differs from a recursive query, where the initial DNS server takes on the responsibility of finding the answer for the client. The other options are incorrect: iterative queries don't directly involve all root servers in one go, encrypt communication automatically, or dynamically update records across servers.
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