Your company has a set of EC2 Instances. The monitoring department needs to get dashboard metrics for the CPU utilization of the Instances at one-minute intervals. You need to comply with this requirement in the easiest and cost-efficient way possible. Which of the following steps would you implement? Choose 2 answers from the options given below.

Answer options:

A.Enable basic monitoring for the EC2 Instances so that costs are kept in check.
B.Enable detailed monitoring for the EC2 Instances.
C.Create a dashboard in Cloudwatch.
D.Create a dashboard in Cloudtrail.

Answer – B and C
The AWS Documentation mentions the following.
Amazon EC2 sends metrics to Amazon CloudWatch. You can use the AWS Management Console, the AWS CLI, or an API to list the metrics that Amazon EC2 sends to CloudWatch. By default, each data point covers the previous 5 minutes of activity, for instance. If you`ve enabled detailed monitoring, each data point covers the previous 1 minute of activity.
Amazon CloudWatch dashboards are customizable home pages in the CloudWatch console that you can use to monitor your resources in a single view, even those resources that are spread across different Regions. You can use CloudWatch dashboards to create customized views of the metrics and alarms for your AWS resources.
Option A is incorrect since this will not meet the requirement of 1-minute interval logging of metrics.
Option D is incorrect since this is only used for API-based logging.
For more information on Cloudwatch metrics, please refer to the below URL-
https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/viewing_metrics_with_cloudwatch.html
For more information on Cloudwatch dashboards, please refer to the below URL
https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/CloudWatch_Dashboards.html