A SysOps administrator must alert when disk utilization for EBS volumes attached to Linux EC2 instances exceeds 80%. Which combination of actions is required to collect the metric and trigger an alarm? (Choose three.)
Choose an answer
Tap an option to check your answer.
Correct answer: Create an IAM role that includes the managed policy CloudWatchAgentServerPolicy and attach that role to the EC2 instances., Install and start the CloudWatch agent on each instance using Systems Manager or the command line., Create a CloudWatch alarm that goes into ALARM when the disk_used_percent metric is greater than 80% (or equivalently when disk_used > 80% or disk_free < 20%)..
Why this is the answer
To collect custom metrics like disk utilization from EC2 instances, the CloudWatch agent is required. This agent needs permissions to send data to CloudWatch, which is provided by attaching an IAM role with the CloudWatchAgentServerPolicy to the EC2 instances. After the role is attached, the CloudWatch agent must be installed and started on each instance. This can be automated using AWS Systems Manager or performed manually via the command line. Finally, a CloudWatch alarm needs to be created, monitoring the diskusedpercent metric (or equivalent custom metrics like diskused or diskfree if configured) and triggering when it exceeds 80%. The CloudWatchApplicationInsightsReadOnlyAccess policy is incorrect as it's for reading insights, not sending metrics. Installing the agent using an IAM role is not how the agent is installed; the role is for permissions.
Pass your exam — without the endless answer hunt
Get every verified question and explanation for this exam in one place, and save hours of prep. 1,000+ certifications · 20+ languages · free to start.
Pass your exam faster → No card needed