BlueYonder has a parent public DNS zone 'example.com' in subscription A and needs to delegate the subdomain 'eu.example.com' to a child private/public DNS zone authored in subscription B (different Azure AD tenant is not involved). What steps are required to delegate the subdomain so DNS queries for eu.example.com resolve using the child zone name servers?
Choose an answer
Tap an option to check your answer.
Correct answer: Create the child zone eu.example.com in subscription B; copy the child zone's authoritative nameserver FQDNs from the child zone's name servers list; in the parent zone example.com in subscription A, create an NS record for eu that lists those child zone name servers.
Why this is the answer
To delegate a subdomain in DNS, you must create an NS (Name Server) record in the parent zone that points to the authoritative name servers of the child zone. The correct option outlines this standard DNS delegation process: create the child zone, obtain its name servers, and then create an NS record in the parent zone for the subdomain, listing those name servers. The incorrect options propose non-standard or invalid DNS delegation methods: An A record maps a hostname to an IP address, not for delegation. Updating subscription IDs does not facilitate DNS delegation. A CNAME record creates an alias, not a delegation of authority for a subdomain.
Pass your exam — without the endless answer hunt
Get every verified question and explanation for this exam in one place, and save hours of prep. 1,000+ certifications · 20+ languages · free to start.
Pass your exam faster → No card needed