AWS Certified SysOps Administrator – Associate (legacy) — Question 70

A web application's performance has been degrading. Historically, the application has had highly-variable workloads, but lately, there has been a steady growth in traffic as the result of a new product launch. After reviewing several Amazon CloudWatch metrics, it is discovered that over the last two weeks the balance of CPU credits has dropped to zero several times.
Which solutions will improve performance? (Choose two.)

Answer options

• A. Begin using the T2 instance type
• B. Purchase more CPU credits for the existing instance
• C. Increase the size of the current instance type
• D. Configure a CloudWatch alarm on the CPU credits metric

Correct answer: A, C

Explanation

Choosing option A, the T2 instance type, is correct as it provides burstable performance, allowing for better handling of variable workloads. Option C is also correct since increasing the instance size can provide more resources to accommodate the growing traffic. Options B and D do not directly resolve the performance issues; purchasing more credits doesn't address the underlying problems, and setting an alarm does not improve performance itself.