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Answer: Add records for the hosts of the new subdomain to the new Route 53 hosted zone., Update the DNS service for the parent domain by adding name server (NS) records for the subdomain.
To create a subdomain in another AWS account without migrating the parent domain, the network engineer must perform two main steps. First, they need to add records for the hosts of the new subdomain to the new Route 53 hosted zone created in the second account (Option A). This step ensures that the subdomain can resolve to the correct Amazon EC2 instances. Second, they must update the DNS service for the parent domain by adding name server (NS) records for the subdomain (Option B). This step is crucial for delegating the subdomain to the new Route 53 hosted zone in the second account, allowing DNS queries for the subdomain to be routed correctly. Options C, D, and E are not necessary for this task. Option C suggests updating the DNS service for the subdomain with NS records for the parent domain, which is not required. Option D suggests creating an alias record from the parent domain to the subdomain's hosted zone, which is not the correct approach for DNS delegation. Option E, adding an SOA record in the parent domain for the subdomain, is also not necessary as the SOA record is automatically managed by Route 53 for each hosted zone.
Author: LeetQuiz Editorial Team
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A company has registered a public domain, example.com, in an AWS account managed by a central services group using Amazon Route 53. They want to create a subdomain, test.example.com, in a separate AWS account to provide name services for Amazon EC2 instances hosted in that account, without transferring the parent domain to the subdomain account. A network engineer sets up a new Route 53 hosted zone for the subdomain in the second account.
Which two actions must the network engineer perform to achieve this?
A
Add records for the hosts of the new subdomain to the new Route 53 hosted zone.
B
Update the DNS service for the parent domain by adding name server (NS) records for the subdomain.
C
Update the DNS service for the subdomain by adding name server (NS) records for the parent domain.
D
Create an alias record from the parent domain that points to the hosted zone for the subdomain in the second account.
E
Add a start of authority (SOA) record in the parent domain for the subdomain.
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