DEA-C01 Data Security and Governance Practice Question
A company stores PII in an S3 bucket. The security team wants to use Amazon Macie to discover sensitive data. After enabling Macie, they notice that no sensitive data findings are generated. The S3 bucket is in the same account. What is the most likely reason?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The S3 bucket is in a different AWS Region than the Macie session.
Macie only scans buckets in the same AWS Region as the Macie session. If the bucket is in a different region, Macie cannot discover sensitive data in it. Option A is incorrect because Macie uses service-linked roles, not the bucket policy, to access buckets in the same account. Option B is incorrect because Macie does not require cross-account access for buckets in the same account. Option D is incorrect because Macie can read objects regardless of ACLs as long as the appropriate IAM permissions are granted.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The bucket policy blocks access from Macie's service principal.
Why it's wrong here
Macie uses the Macie service-linked role.
- ✗
Macie is not configured with cross-account access to the bucket.
Why it's wrong here
Macie works within the same account.
- ✓
The S3 bucket is in a different AWS Region than the Macie session.
Why this is correct
Macie only analyzes data in the same Region.
- ✗
The S3 objects have private ACLs that prevent Macie from reading them.
Why it's wrong here
Macie uses IAM permissions, not ACLs.
Quick reference
AWS S3 Storage Class Comparison
| Storage Class | Min Duration | Retrieval | Use Case |
|---|---|---|---|
| S3 Standard | None | Immediate | Frequently accessed data |
| S3 Standard-IA | 30 days | Immediate | Infrequent access, rapid retrieval |
| S3 One Zone-IA | 30 days | Immediate | Non-critical infrequent data |
| S3 Intelligent-Tiering | None | Immediate–hours | Unknown or changing access patterns |
| S3 Glacier Instant | 90 days | Milliseconds | Archive with instant retrieval |
| S3 Glacier Flexible | 90 days | Minutes–hours | Archive, flexible retrieval |
| S3 Glacier Deep Archive | 180 days | Hours | Long-term compliance archive |
Go deeper
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This DEA-C01 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the DEA-C01 exam.