A Company Has Multiple Amazon EC2 Instances That Run a Resource-Intensive

question 44

Multiple Choice

A company has multiple Amazon EC2 instances that run a resource-intensive application in a development environment. A SysOps administrator is implementing a solution to stop these EC2 instances when they are not in use. Which solution will meet this requirement?

• A) Assess AWS CloudTrail logs to verify that there is no EC2 API activity. Invoke an AWS lambda function to stop the EC2 instances.
• B) Create an Amazon CloudWatch alarm to stop the EC2 instances when the average CPU utilization is lower than 5% for a 30-minute period.
• C) Create an Amazon CloudWatch metric to stop the EC2 instances when the VolumeReadBytes metric is lower than 500 for a 30-minute period.
• D) Use AWS Config to invoke an AWS Lambda function to stop the EC2 instances based on resource configuration changes.

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Definitions:

Inside Diameter

The measure of the distance across the innermost part of a hollow object or space.

Lower Control Limit

A threshold value in statistical process control below which a process is considered to be out of control on the lower side.

Rational Subgroups

Groupings within a data set that are formed based on logical or natural relationships, often used in quality control to evaluate variation within and between these groups.

Item-To-Item Variation

The variability in characteristics or attributes between individual items within a batch or sample.