DBS-C01 Database Security Practice Question
Network Topology
A developer is checking the encryption status of an RDS MySQL instance. The CLI output shows StorageEncrypted is true. What does this indicate?
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
✓
The database is encrypted at rest using a KMS key.
When StorageEncrypted is true, it indicates that the RDS MySQL instance is encrypted at rest using a KMS key. Option A is incorrect because StorageEncrypted does not relate to encryption in transit. Option B is incorrect because it can be either AWS managed or customer managed KMS key. Option C is incorrect because StorageEncrypted: true means encryption at rest is enabled.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Connections to the database are encrypted in transit.
Why it's wrong here
StorageEncrypted indicates at-rest encryption.
- ✗
The database is encrypted using the AWS managed key for RDS.
Why it's wrong here
The key ARN is a customer managed key.
- ✗
The database does not have encryption at rest enabled.
Why it's wrong here
It is enabled.
- ✓
The database is encrypted at rest using a KMS key.
Why this is correct
StorageEncrypted true confirms at-rest encryption.
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
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.