AWS Certified SysOps Administrator – Associate (legacy) — Question 713

A SysOps Administrator is creating an Amazon EC2 instance and has received an InsufficientInstanceCapacity error.
What is the cause of the error and how can it be corrected?

Answer options

• A. AWS does not currently have enough capacity to service the request for that instance type. A different Availability Zone or instance type must be used.
• B. The account has reached its concurrent running instance limit. An EC2 limit increase request must be filed with AWS Support.
• C. The APIs that service the EC2 requests have received too many requests and capacity has been reached. The request should be attempted again in a few minutes.
• D. The Administrator did not specify the correct size of the instance to support the capacity requirements of the workload. Select a bigger instance.

Correct answer: A

Explanation

An InsufficientInstanceCapacity error indicates that AWS does not have enough available physical host capacity in the specified Availability Zone to provision the requested EC2 instance type. To resolve this, you must either try launching in a different Availability Zone, choose a different instance type, or wait for capacity to become available. Account limits trigger an InstanceLimitExceeded error instead, and API rate limits result in RequestLimitExceeded or throttling errors.