AWS Certified SysOps Administrator SOA-C01 – Question796

A SysOps Administrator has created an Amazon EC2 instance using an AWS CloudFormation template in the us-east-1 Region. The Administrator finds that this template has failed to create an EC2 instance in the us-west-2 Region.
What is one cause for this failure?

A.
Resources tags defined in the CloudFormation template are specific to the us-east-1 Region.
B. The Amazon Machine Image (AMI) ID referenced in the CloudFormation template could not be found in the us-west-2 Region.
C. The cfn-init script did not execute during resource provisioning in the us-west-2 Region.
D. The IAM user was not created in the specified Region.

Correct Answer: B

Explanation: