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SOA-C03 · Question #20

A company uses an Amazon Simple Queue Service (Amazon SQS) queue and Amazon EC2 instances in an Auto Scaling group with target tracking for a web application. The company collects the ASGAverageNetwor

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Submitted by saadiq_pk· Mar 5, 2026Cost and performance optimization

Question

A company uses an Amazon Simple Queue Service (Amazon SQS) queue and Amazon EC2 instances in an Auto Scaling group with target tracking for a web application. The company collects the ASGAverageNetworkIn metric but notices that instances do not scale fast enough during peak traffic. There are a large number of SQS messages accumulating in the queue. A CloudOps engineer must reduce the number of SQS messages during peak periods. Which solution will meet this requirement?

Options

  • ADefine and use a new custom Amazon CloudWatch metric based on the SQS
  • BDefine and use Amazon CloudWatch metric math to calculate the SQS queue backlog for each
  • CDefine and use step scaling by specifying a ChangeInCapacity value for the EC2 instances.
  • DDefine and use simple scaling by specifying a ChangeInCapacity value for the EC2 instances.

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Topics

#SQS backlog metric#CloudWatch metric math#Auto Scaling#backlog per instance
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