AWS Certified SysOps Administrator – Associate — Question 85

A company has an application that runs only on Amazon EC2 Spot Instances. The instances run in an Amazon EC2 Auto Scaling group with scheduled scaling actions. However, the capacity does not always increase at the scheduled times, and instances terminate many times a day. A SysOps administrator must ensure that the instances launch on time and have fewer interruptions.

Which action will meet these requirements?

Answer options

• A. Specify the capacity-optimized allocation strategy for Spot Instances. Add more instance types to the Auto Scaling group.
• B. Specify the capacity-optimized allocation strategy for Spot Instances. Increase the size of the instances in the Auto Scaling group.
• C. Specify the lowest-price allocation strategy for Spot Instances. Add more instance types to the Auto Scaling group.
• D. Specify the lowest-price allocation strategy for Spot Instances. Increase the size of the instances in the Auto Scaling group.

Correct answer: A

Explanation

Choosing option A ensures that the capacity-optimized allocation strategy is used, which helps in minimizing interruptions by selecting Spot Instances from pools with lower chances of interruption. Adding more instance types enhances flexibility and increases the likelihood of acquiring the needed capacity. The other options either prioritize cost over capacity or do not address the need for reducing interruptions effectively.