DEA-C01 Data Security and Governance Practice Question
A data engineer needs to protect sensitive data in an S3 bucket. Which TWO AWS services can be used to detect and prevent accidental public access?
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
✓
AWS Trusted Advisor
AWS Trusted Advisor checks for S3 buckets with public access, helping to detect accidental public access. S3 Block Public Access can be enabled at the account or bucket level to prevent public access. AWS Config can evaluate rules but does not directly detect or prevent public access. AWS CloudTrail records API calls but does not prevent public access. Amazon Macie discovers sensitive data, not public 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.
- ✗
AWS Config
Why it's wrong here
AWS Config can evaluate rules but does not directly detect or prevent public access.
- ✓
AWS Trusted Advisor
Why this is correct
AWS Trusted Advisor checks for S3 buckets with public access, helping to detect accidental public access.
- ✗
AWS CloudTrail
Why it's wrong here
AWS CloudTrail records API calls but does not prevent public access.
- ✓
S3 Block Public Access
Why this is correct
S3 Block Public Access can be enabled at the account or bucket level to prevent public access.
- ✗
Amazon Macie
Why it's wrong here
Amazon Macie discovers sensitive data, not public access.
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.