Bob is an IAM user who has access to the EC2 services. Admin is an IAM user who has access to all the AWS services
including IAM. Can Bob change his password?

A.
No, the IAM user can never change the password

B.
Yes, provided Admin has given Bob access to change his password

C.
Yes, only from AWS CLI

D.
Yes, only from the AWS console

Explanation:
The IAM users by default cannot change their password. The root owner or IAM administrator needs to set the policy in
the password policy page, which should allow the user to change their password. Once it is enabled, the IAM user can
always change their passwords from the AWS console or CLI.
http://docs.aws.amazon.com/IAM/latest/UserGuide/Using_ManagingUserPwdSelf.html