AWS Certified SysOps Administrator – Associate — Question 121

A company runs hundreds of Amazon EC2 instances in a single AWS Region. Each EC2 instance has two attached 1 GiB General Purpose SSD (gp2) Amazon Elastic Block Store (Amazon EBS) volumes. A critical workload is using all the available IOPS capacity on the EBS volumes.

According to company policy, the company cannot change instance types or EBS volume types without completing lengthy acceptance tests to validate that the company’s applications will function properly. A SysOps administrator needs to increase the I/O performance of the EBS volumes as quickly as possible.

Which action should the SysOps administrator take to meet these requirements?

Answer options

• A. Increase the size of the 1 GiB EBS volumes.
• B. Add two additional elastic network interfaces on each EC2 instance.
• C. Turn on Transfer Acceleration on the EBS volumes in the Region.
• D. Add all the EC2 instances to a cluster placement group.

Correct answer: A

Explanation

Increasing the size of the EBS volumes (Option A) boosts IOPS performance, as gp2 volumes provide more IOPS with larger sizes. Options B, C, and D do not directly enhance the IOPS capacity of EBS volumes; adding network interfaces does not impact EBS performance, while Transfer Acceleration and cluster placement groups are not relevant to I/O performance for EBS volumes.