Question 390
A regulated analytics service uses CMEK in a central security project; a new workload fails encryption because its service agent lacks crypto permissions. Which limitation must be considered before claiming the issue is fully resolved?
Explanation
Correct Answer
Broad encryption administrator access is unnecessary for most service-agent cryptographic operations. This caution prevents extrapolating beyond the specific evidence or product boundary. CMEK architecture depends on service identity and key policy, not just key location. The unresolved point should be tested using KMS IAM logs, encryption error traces and service-agent identity rather than assuming a working interface proves full compliance or resilience.
Incorrect Answers
CMEK users need blanket key administrator permissions to encrypt database records. This limitation is framed as a blanket exception, but the case requires a different, narrower caution. The relevant boundary is that broad encryption administrator access is unnecessary for most service-agent cryptographic operations. CMEK architecture depends on service identity and key policy, not just key location. Inspect KMS IAM logs, encryption error traces and service-agent identity.
Key-use permissions can be assumed from the fact that a resource is encrypted. The proposed claim mistakes an incomplete signal or product feature for a universal guarantee. The relevant boundary is that broad encryption administrator access is unnecessary for most service-agent cryptographic operations. CMEK architecture depends on service identity and key policy, not just key location. Inspect KMS IAM logs, encryption error traces and service-agent identity.
Any project with Cloud KMS API enabled can use any key in that organization. This claim exceeds the evidence and ignores an important risk or operational dependency. The relevant boundary is that broad encryption administrator access is unnecessary for most service-agent cryptographic operations. CMEK architecture depends on service identity and key policy, not just key location. Inspect KMS IAM logs, encryption error traces and service-agent identity.