DEA-C01 Data Security and Governance Practice Question
A data engineer needs to audit all access to an Amazon S3 bucket containing sensitive data. The audit must capture who accessed the bucket, from which IP address, and what actions were performed. Which AWS service should be enabled?
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
✓
Enable AWS CloudTrail with data events for the S3 bucket.
AWS CloudTrail logs all API calls to S3, including the caller identity, source IP, and actions. Option A is wrong because S3 server access logs provide similar info but are not as detailed or centralized. Option C is wrong because CloudWatch Logs can store logs but does not generate them. Option D is wrong because AWS Config tracks resource configuration changes, not API calls.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Enable S3 server access logging for the bucket.
Why it's wrong here
Server access logs record requests but are not as comprehensive for auditing.
- ✓
Enable AWS CloudTrail with data events for the S3 bucket.
Why this is correct
CloudTrail data events capture detailed API activity.
- ✗
Use AWS Config to record S3 bucket-level changes.
Why it's wrong here
Config records configuration changes, not access requests.
- ✗
Configure Amazon CloudWatch Logs to monitor S3 access.
Why it's wrong here
CloudWatch Logs stores logs but doesn't generate them.
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
Related to this question
About these practice questions
Courseiva writes every DEA-C01 question from scratch — 1,711 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
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.