A SysOps administrator launched four new Amazon Linux 2 EC2 instances using the standard AMI. The team needs to manage these instances through AWS Systems Manager, but the instances do not appear in the Systems Manager console. What action will enable Systems Manager management for these instances?
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Correct answer: Attach an IAM instance profile to the instances that includes the AmazonSSMManagedInstanceCore managed policy..
Why this is the answer
The correct answer is to attach an IAM instance profile with the AmazonSSMManagedInstanceCore managed policy. This policy grants the necessary permissions for the EC2 instance to communicate with the AWS Systems Manager service. Amazon Linux 2 AMIs come pre-installed with the SSM Agent, so manual installation (first incorrect option) is not required. TLS certificates (second incorrect option) are not used for authenticating instances with Systems Manager. Creating an ssm-user account (third incorrect option) is related to Session Manager access for users, not the instance's ability to be managed by Systems Manager itself.
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