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AWS Certified Advanced Networking - Specialty · AWS
Select 2 answers.
This question asks for 2 answers, but our data marks only 1. Compare with the community discussion below for the full answer.
Written by other learners. Comments can disagree with the marked answer — check the official documentation when in doubt.
AB is correct.
https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/CreatingNewSubdomain.html
Respectfully, "After your changes to Amazon Route 53 records have propagated (see Checking the status of your changes (API only)), update the DNS service for the parent domain by adding NS records for the subdomain." So it is A and B