Which of the following cannot be used in Amazon EC2 to control who has access to specific Amazon EC2
instances?
A.
Security Groups
B.
IAM System
C.
SSH keys
D.
Windows passwords
Explanation:
http://blogs.aws.amazon.com/security/post/Tx29HCT3ABL7LP3/Resource-level-Permissions-for-EC2-
Controlling- Management-Access-on-Specific-Ins
https://acloud.guru/forums/aws-security/discussion/-KU5E02fpFGB22FZlMlc/which-of-the-following-cannot-be-used-in-amazon-ec2-to-control-who-has-access-to
B
https://www.aiotestking.com/amazon/which-of-the-following-cannot-be-used-in-amazon-ec2-to-control-who-has-access-to-specific-amazon-ec2-instances/
Seems strange but B is correct
A
A Security Group can only control “from what IP address” they can have access to the instance.
The question need to know which of the following cannot be used.
then B is correct answer
The answer is B but whoever posted this question badly misworded it.