Which of the following requires a custom CloudWatch metric to monitor?

Which of the following requires a custom CloudWatch metric to monitor?
A . Data transfer of an EC2 instance
B . Disk usage activity of an EC2 instance
C . Memory Utilization of an EC2 instance
D . CPU Utilization of an EC2 instance

View Answer

Answer: C

Explanation:

http://docs.aws.amazon.com/AmazonCloudWatch/latest/DeveloperGuide/ec2­metricscollected.html CPU, Disk I/O, Data Transfer are default metrics. Memory is not mentioned.