200-301: Cisco Certified Network AssociateDemo

By Cisco · Question Mode

QuestionQ1375

IP Services

What role does an iterative DNS query perform in the domain name resolution process?

  • A Obtain information directly from all root DNS servers configured within the scope.
  • B Encrypt communication automatically between DNS clients and servers.
  • C Allow a DNS client to contact several DNS servers until the correct information is found.
  • D Update records dynamically across multiple DNS servers at the same time.
Explanation

An iterative DNS query lets the resolver follow referral responses and query additional DNS servers until it reaches a server with the needed DNS information. It does not inherently encrypt DNS traffic, contact every root server, or replicate dynamic updates. Microsoft Learn describes iteration as a client contacting other name servers based on referral answers when the initial server cannot resolve the name.

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