If you wanted to ensure that the same set of nameservers are used across multiple domains in Route53 , what would you do?

Answer options:

A.Create a delegation set via the console
B.Create a dual hosted zone in Route53
C.Create a delegation set via the AWS CLI
D.Create a primary hosted zone in Route53

Answer - C
The AWS documentation mentions the following
By default, each hosted zone that you create gets a different set of four name servers—a different delegation set. If you create a lot of hosted zones, maintaining different delegation sets can be difficult and time consuming. Amazon Route 53 lets you create a delegation set that you can reuse with multiple hosted zones.
For more information on Route53, please refer to the below URL:
http://docs.aws.amazon.com/Route53/latest/APIReference/Welcome.html