DEA-C01 Data Security and Governance Practice Question
A company wants to ensure that all S3 buckets are encrypted using server-side encryption. Which AWS service can be used to automatically remediate non-compliant buckets?
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 Config
AWS Config can use managed rules like s3-bucket-server-side-encryption-enabled to check compliance and trigger auto-remediation via SSM Automation or Lambda. Option D is correct.
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 CloudTrail
Why it's wrong here
CloudTrail records API activity for auditing and does not evaluate resource configuration or apply remediation. It is tempting because it can show who disabled encryption, but it would be the right service for tracing API calls, whereas AWS Config rules with automatic remediation enforce encryption on non-compliant buckets.
- ✗
Amazon Inspector
Why it's wrong here
Amazon Inspector assesses EC2 instances and container images for vulnerabilities and network exposure; it does not evaluate S3 bucket encryption settings. It is tempting as a security service, but it would be the correct choice for scanning workloads for software vulnerabilities, not for remediating bucket configuration.
- ✗
AWS Trusted Advisor
Why it's wrong here
Trusted Advisor reports cost, security and fault-tolerance checks but does not enforce or remediate configuration drift. It is tempting because its security category flags public buckets, yet it would be the right tool for advisory recommendations, whereas AWS Config rules with automatic remediation actually modify non-compliant buckets.
- ✓
AWS Config
Why this is correct
AWS Config rules continuously evaluate S3 bucket encryption against your desired configuration and can trigger automatic remediation, such as invoking a Systems Manager automation to enable default encryption. This satisfies the requirement to remediate non-compliant buckets automatically, rather than merely detecting or reporting drift.
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.