A SysOps administrator needs to create alerts that are based on the read and write metrics of Amazon Elastic Block Store (Amazon EBS) volumes that are attached to an Amazon EC2 instance. The SysOps…

Question

Options

• AInstall and configure the CloudWatch agent on the EC2 instance to capture the desired
• BInstall and configure AWS Systems Manager Agent on the EC2 instance to capture the
• CReconfigure the CloudWatch alarms to use the VolumeReadBytes metric and the
• DReconfigure the CloudWatch alarms to use the VolumeReadBytes metric and the

• A
  15% (2)
• C
  77% (10)
• D
  8% (1)

Explanation

CloudWatch can monitor I/O based on an entire EBS volume without the agent using the VolumeWriteBytes metric. The question is asking about "volume metrics". If the question were asking about alerting for used or free space in a file system on a volume, then you'd need the CloudWatch agent running on the OS to analyze things from the OS perspective, including I/O with the DiskWriteBytes metric. The VolumeWriteBytes and DiskWriteBytes metrics are basically looking for the same thing. It's like looking at a bucket from the inside or the outside to see what size it is. Both work. If you want to see inside of the bucket or what else is inside the bucket, then you, you need CloudWatch agent running on OS.

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