DEA-C01 Data Security and Governance Practice Question
A data engineer needs to store encryption keys used for protecting data in Amazon S3 and automatically rotate them every year. Which service should be used?
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 KMS
AWS KMS supports automatic key rotation for customer managed keys. Option B is wrong because CloudHSM does not provide automatic rotation. Option C is wrong because Secrets Manager is for secrets. Option D is wrong because ACM is for certificates.
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 KMS
Why this is correct
KMS provides automatic key rotation.
- ✗
AWS CloudHSM
Why it's wrong here
CloudHSM does not automatically rotate keys.
- ✗
AWS Certificate Manager
Why it's wrong here
ACM manages SSL/TLS certificates.
- ✗
AWS Secrets Manager
Why it's wrong here
Secrets Manager manages secrets, not encryption keys.
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.