Question 1,510 of 1,663
DBS-C01 Database Security Practice Question
A company is using Amazon RDS for PostgreSQL to store application data. The security team wants to ensure that database audit logs are stored securely and cannot be modified after creation. Which AWS service should be used to meet this requirement?
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
✓
Amazon CloudWatch Logs
Amazon RDS for PostgreSQL can publish database audit logs to Amazon CloudWatch Logs. CloudWatch Logs provides immutability through IAM policies that prevent log modification and deletion, combined with log group encryption using AWS KMS. Option D is correct. Option A (AWS KMS) is wrong because KMS manages encryption keys, not log storage. Option B (AWS CloudTrail) is wrong because CloudTrail records API activity, not database audit logs. Option C (Amazon S3) can store logs, but enabling immutability requires additional configuration like S3 Object Lock, making CloudWatch Logs the more straightforward and recommended service for this requirement.
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 Key Management Service (KMS)
Why it's wrong here
KMS is for encryption keys, not for storing logs.
- ✗
AWS CloudTrail
Why it's wrong here
CloudTrail records API calls, not database audit logs.
- ✗
Amazon S3
Why it's wrong here
S3 can be used but requires additional features like Object Lock for immutability.
- ✓
Amazon CloudWatch Logs
Why this is correct
CloudWatch Logs can store audit logs with encryption and access controls.
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 DBS-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 DBS-C01 exam.
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