Question 708 of 1,711
DEA-C01 Data Security and Governance Practice Question
A company wants to implement least privilege access for its data lake on S3. Which THREE practices should be followed? (Choose THREE.)
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
✓
Use S3 bucket policies for cross-account access
The correct answers are B, C, and E. To implement least privilege for an S3 data lake, use S3 bucket policies for cross-account access (B), use S3 access points to enforce network policies (C), and use IAM policies to grant specific permissions (E). Option A is incorrect because granting s3:* to all users violates least privilege. Option D is incorrect because disabling S3 Block Public Access increases risk; it should be enabled.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Grant s3:* to all users for simplicity
Why it's wrong here
Full S3 access violates least privilege.
- ✓
Use S3 bucket policies for cross-account access
Why this is correct
Bucket policies are appropriate for cross-account.
- ✓
Use S3 access points to enforce network policies
Why this is correct
Access points can restrict access by VPC.
- ✗
Disable S3 Block Public Access to allow flexibility
Why it's wrong here
Block Public Access should be enabled to prevent public access.
- ✓
Use IAM policies to grant specific permissions to users and roles
Why this is correct
IAM policies allow granular permissions.
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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Last reviewed: Jun 20, 2026
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.
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