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In Azure, to delegate the subdomain research.adatum.com to another DNS server, which action should be performed on the adatum.com DNS zone?
In Azure, to delegate the subdomain research.adatum.com to another DNS server, which action should be performed on the adatum.com DNS zone?
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Explanation:
The correct answer is A: Create an NS record for the subdomain. To delegate a subdomain (research.adatum.com) to a different DNS server, you need to create a Name Server (NS) record within the parent domain (adatum.com) that specifies the DNS servers for the subdomain. The NS record indicates which DNS servers are authoritative for the specified subdomain, thereby delegating the DNS resolution duties to those servers. This process allows the subdomain to be managed independently from the parent domain. The other options (PTR record, SOA record modification, and A record) do not accomplish the task of delegation.