Question 70
In an AWS networking assessment, a compliance rule requires an EC2 administrative SSH endpoint to be accessible only from a managed bastion group. Which technical explanation BEST accounts for the observed condition?
Explanation
Correct Answer
Using a workload group as source narrows administrative access compared with internet-wide permission. This explains the observed network behavior, which can be checked by verifying that SSH from the bastion works while random internet clients are blocked.
Incorrect Answers
Endpoint private addressing does not automatically enforce least-privilege client access. For the stated conditions, using a workload group as source narrows administrative access compared with internet-wide permission. The more specific mechanism is source security-group references can restrict management ingress to designated hosts.
Private routing to a service is not an authorization grant to every bucket in that service. The decisive technical distinction is source security-group references can restrict management ingress to designated hosts; using a workload group as source narrows administrative access compared with internet-wide permission.
Security groups lack explicit deny rules while NACL rule-order processing can enforce a scoped subnet deny. The reported evidence instead concerns source security-group references can restrict management ingress to designated hosts: using a workload group as source narrows administrative access compared with internet-wide permission.






AWS Certified Advanced Networking - Specialty ANS-C01 Practice Tests