What is the type of monitoring data (for Amazon EBS volumes) which is available automatically in 5-minute
periods at no charge called?

A.
Basic

B.
Primary

C.
Detailed

D.
Local

Explanation:
Monitoring Volumes with CloudWatch
CloudWatch metrics are statistical data that you can use to view, analyze, and set alarms on the operational
behavior of your volumes. The following table describes the types of monitoring data available for your Amazon
EBS volumes:
Basic
Data is available automatically in 5-minute periods at no charge. This includes data for the root device volumes
for EBS- backed instances.
DetailedProvisioned IOPS SSD (io1) volumes automatically send one-minute metrics to CloudWatch. http://
docs.aws.amazon.com/AWSEC2/latest/UserGuide/monitoring-volume-status.html