DEA-C01 Data Security and Governance Practice Question

Correct answer & explanation

When S3 Server Access Logging is enabled for a bucket encrypted with SSE-KMS, the S3 service must write log objects to the target bucket. If the target bucket is in a different account, the S3 service needs permission to use the KMS key. However, the failure is on the Glue job reading from the raw bucket, not writing logs. The issue could be that the raw bucket's S3 access log delivery writes to a target bucket that uses a different KMS key, but that would affect logging, not Glue reads. Re-reading: The Glue job reading the raw bucket fails after enabling logging. It's likely that the raw bucket policy was modified to allow log delivery, inadvertently restricting other access. Actually, the most likely cause is that the S3 bucket policy now includes a condition that denies access unless a specific header is present, or the KMS key policy was changed. Given the options, the correct answer is that the KMS key policy for the data-key now denies the Glue role because the S3 service principal was added for cross-account logging. But the Glue role needs kms:Decrypt permission. The scenario says the same key is used for both buckets. The correct answer is B: The KMS key policy does not allow the Glue role to decrypt because the S3 log delivery service is using the key and the key policy may have a condition. Actually, the most direct answer: The Glue role is missing kms:Decrypt permission on the KMS key. But the team might have added a statement to allow S3 logging that inadvertently denies the Glue role. However, the simplest answer is that the Glue role lacks kms:Decrypt. But the question says 'Which additional permission is most likely missing?' The options are specific permissions. I'll go with the need for kms:Decrypt on the KMS key.

Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.