DEA-C01 Data Operations and Support Practice Question
A company stores sensitive data in Amazon S3 and uses AWS Lake Formation to manage fine-grained access control. A data engineer notices that users are able to access data in S3 directly via the AWS Management Console, bypassing Lake Formation permissions. What should the engineer do to enforce Lake Formation access controls for all access methods?
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
✓
Register the S3 location in Lake Formation and disable IAM access control for the registered location.
To enforce Lake Formation permissions for all access methods, you must register the S3 location in Lake Formation and disable IAM access control for that location. This ensures that Lake Formation's fine-grained permissions are enforced, preventing direct S3 access. Option A is incorrect because adding a bucket policy that denies all access except from Lake Formation is not the recommended approach and can break legitimate access. Option B is incorrect because disabling CloudTrail does not affect access control. Option D is incorrect because S3 Block Public Access only prevents public access, not IAM user access.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Add a bucket policy that denies all access except from Lake Formation.
Why it's wrong here
Bucket policies can be bypassed by IAM users with s3:GetObject.
- ✗
Disable AWS CloudTrail logging for S3 access.
Why it's wrong here
CloudTrail is for auditing, not enforcing permissions.
- ✓
Register the S3 location in Lake Formation and disable IAM access control for the registered location.
Why this is correct
This ensures Lake Formation controls all access to the data.
- ✗
Enable S3 Block Public Access on the bucket.
Why it's wrong here
Block Public Access does not enforce Lake Formation.
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 |
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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.