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SOA-C02 · Question #400

SOA-C02 Question #400: Real Exam Question with Answer & Explanation

The correct answer is A: Install the Amazon CloudWatch agent on the EC2 instances. Create a metric alarm for the disk. You have to install cloudwatch agent as you don't have disk usage metrics by default. https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/Create_Composite_Alarm .h

Submitted by katya_ua· Mar 30, 2026

Question

A SysOps administrator wants to monitor the free disk space that is available on a set of Amazon EC2 instances that have Amazon Elastic Block Store (Amazon EBS) volumes attached. The SysOps administrator wants to receive a notification when the used disk space of the EBS volumes exceeds a threshold value, but only when the DiskReadOps metric also exceeds a threshold value. The SysOps administrator has set up an Amazon Simple Notification Service (Amazon SNS) topic. How can the SysOps administrator receive notification only when both metrics exceed their threshold values?

Options

  • AInstall the Amazon CloudWatch agent on the EC2 instances. Create a metric alarm for the disk
  • BInstall the Amazon CloudWatch agent on the EC2 instances. Create a metric alarm for the disk
  • CCreate a metric alarm for the EBSByteBalance% metric and a metric alarm for the DiskReadOps
  • DConfigure detailed monitoring for the EC2 instances. Create a metric alarm for the disk space and

Explanation

You have to install cloudwatch agent as you don't have disk usage metrics by default. https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/Create_Composite_Alarm .h

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