The Development Team is planning to use an encrypted Cold HDD Amazon EBS volume with an existing m5.large Amazon EC2 instance for storing application data. While attaching this volume to the Amazon EC2 instance, volume attachment is getting failed & you have been asked to troubleshoot the issue.
What could be a possible reason for this issue?

Answer options:

A.Volume type Cold HDD volume type does not support encryption.
B.Instance type m5. large Amazon EC2 Instances do not support encrypted EBS volume.
C.Default KMS key is used for encryption of Amazon EBS volumes.
D.CMK key status used for encryption is in disabled state.

Correct Answer: D
CMK Key used for encryption of Amazon EBS volume should be in Enabled state, else attaching an encrypted Amazon EBS volume to an Amazon EC2 instance fails.
Option A is incorrect as all EBS volumes support encryption.
Option B is incorrect as all current generation EC2 instances support encryption.
Option C is incorrect as using the default key will not affect volume attachment to Amazon EC2 instances. For encryption, either default or custom key can be used.
For more information on Amazon EBS encryption, refer to the following URL,
https://docs.aws.amazon.com/kms/latest/developerguide/services-ebs.html