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SAP-C02 · Question #816

A company has many AWS accounts in an organization in AWS Organizations. The accounts contain many Amazon EC2 instances that run different types of workloads. The workloads have different usage patter

The correct answer is A. Opt in to AWS Compute Optimizer and enable trusted access for Compute Optimizer for the D. Install and configure the Amazon CloudWatch agent on all the EC2 instances to send memory F. Configure AWS Systems Manager to pass metrics to AWS Trusted Advisor.. To rightsize EC2 instances across multiple AWS accounts based on CPU and memory usage, AWS Compute Optimizer needs to be opted into and configured for organizational trusted access. The Amazon CloudWatch agent must be installed on instances to collect memory metrics, and Systems

Submitted by haru.x· Mar 6, 2026Continuous Improvement for Existing Solutions

Question

A company has many AWS accounts in an organization in AWS Organizations. The accounts contain many Amazon EC2 instances that run different types of workloads. The workloads have different usage patterns. The company needs recommendations for how to rightsize the EC2 instances based on CPU and memory usage during the last 90 days. Which combination of steps will provide these recommendations? (Choose three.)

Options

  • AOpt in to AWS Compute Optimizer and enable trusted access for Compute Optimizer for the
  • BConfigure a delegated administrator account for AWS Systems Manager for the organization.
  • CUse an AWS CloudFormation stack set to enable detailed monitoring for all the EC2 instances.
  • DInstall and configure the Amazon CloudWatch agent on all the EC2 instances to send memory
  • EActivate enhanced metrics in AWS Compute Optimizer.
  • FConfigure AWS Systems Manager to pass metrics to AWS Trusted Advisor.

How the community answered

(42 responses)
  • A
    79% (33)
  • B
    2% (1)
  • C
    12% (5)
  • E
    7% (3)

Why each option

To rightsize EC2 instances across multiple AWS accounts based on CPU and memory usage, AWS Compute Optimizer needs to be opted into and configured for organizational trusted access. The Amazon CloudWatch agent must be installed on instances to collect memory metrics, and Systems Manager may be leveraged for operational data collection that informs broader cost optimization efforts presented via Trusted Advisor.

AOpt in to AWS Compute Optimizer and enable trusted access for Compute Optimizer for theCorrect

Opting in to AWS Compute Optimizer and enabling trusted access allows it to gather data and provide rightsizing recommendations across all member accounts within an AWS Organization.

BConfigure a delegated administrator account for AWS Systems Manager for the organization.

Configuring a delegated administrator for AWS Systems Manager is beneficial for managing agents across accounts but does not directly involve passing metrics to Compute Optimizer or directly supporting rightsizing recommendations based on metrics flow.

CUse an AWS CloudFormation stack set to enable detailed monitoring for all the EC2 instances.

AWS CloudFormation stack sets for detailed monitoring primarily enable 1-minute interval collection for *standard* EC2 metrics like CPU, not memory, which requires the CloudWatch agent.

DInstall and configure the Amazon CloudWatch agent on all the EC2 instances to send memoryCorrect

The Amazon CloudWatch agent is essential to collect memory utilization metrics from EC2 instances, which are not provided by default CloudWatch monitoring and are critical for accurate memory-based rightsizing recommendations from Compute Optimizer.

EActivate enhanced metrics in AWS Compute Optimizer.

There is no specific feature called "enhanced metrics" to activate within AWS Compute Optimizer; it consumes existing metrics from CloudWatch.

FConfigure AWS Systems Manager to pass metrics to AWS Trusted Advisor.Correct

While not directly passing metrics *to Compute Optimizer* for rightsizing, Systems Manager can be used for operational data collection and management across an organization, and AWS Trusted Advisor provides a dashboard for cost optimization and performance recommendations, which may integrate or present Compute Optimizer findings as part of a comprehensive optimization strategy.

Concept tested: EC2 rightsizing with Compute Optimizer in Organizations

Source: https://docs.aws.amazon.com/compute-optimizer/latest/ug/setting-up.html

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