AWS Certified Solutions Architect – Professional — Question 553

A user has launched two EBS backed EC2 instances in the US-East-1a region. The user wants to change the zone of one of the instances. How can the user change it?

Answer options

• A. It is not possible to change the zone of an instance after it is launched
• B. From the AWS EC2 console, select the Actions - > Change zones and specify the new zone
• C. The zone can only be modified using the AWS CLI
• D. Stop one of the instances and change the availability zone

Correct answer: A

Explanation

Once an Amazon EC2 instance is launched, its Availability Zone is fixed and cannot be directly changed or modified in place. To move an instance to a different zone, you must create an AMI of the instance and use it to launch a new instance in the desired Availability Zone. Consequently, options involving direct console actions, CLI commands, or stopping the instance to change the zone are invalid.