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AWS Certified CloudOps Engineer Associate SOA-C03 Practice Question

A company runs a fleet of 20 Amazon EC2 m5.4xlarge instances in an Auto Scaling group across two Availability Zones. CloudWatch shows that for the last 14 days, average CPU utilization has been 18 percent and network throughput is consistently low. Memory usage is below 35 percent on all instances. Management asks the CloudOps engineer to reduce EC2 costs while keeping the same two-AZ architecture and leaving application code unchanged. Which action is the MOST cost-effective and requires the LEAST operational effort?

  • Configure the Auto Scaling group to launch Spot Instances of the same size in one Availability Zone and On-Demand instances in the other.

  • Purchase one-year Standard Reserved Instances for the existing m5.4xlarge instance type to obtain a discounted hourly rate.

  • Create a target tracking scaling policy to double the desired capacity when CPU exceeds 50 percent and halve it when CPU drops below 20 percent.

  • Enable AWS Compute Optimizer for the account and apply its rightsizing recommendation to move the Auto Scaling group to smaller burstable performance instances that still meet the observed workload.

AWS Certified CloudOps Engineer Associate SOA-C03
Monitoring, Logging, Analysis, Remediation, and Performance Optimization
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