- A
Unload the data from the existing cluster to S3, create a new encrypted cluster using the KMS key, and reload the data from S3.
This is the recommended approach to migrate data to an encrypted cluster.
- B
Change the cluster parameter group to enable encryption.
Why wrong: Parameter groups do not control encryption.
- C
Modify the cluster and enable encryption in the Redshift console.
Why wrong: Encryption cannot be enabled on an existing cluster.
- D
Take a snapshot of the cluster, copy the snapshot with encryption, and restore from the encrypted snapshot.
Why wrong: Redshift snapshots are not used to encrypt clusters; the cluster must be encrypted at creation.
Question 1,256 of 1,730
DBS-C01 Database Security Practice Question
This DBS-C01 practice question tests your understanding of database security. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company uses Amazon Redshift for data warehousing. The security team requires that all data loaded into the cluster be encrypted at rest using a customer-managed KMS key. The cluster is currently unencrypted. What is the most efficient way to achieve this requirement with minimal data loss?
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
✓
Unload the data from the existing cluster to S3, create a new encrypted cluster using the KMS key, and reload the data from S3.
Option A is correct. An existing unencrypted Redshift cluster cannot be encrypted in place. The only way to achieve encryption using a customer-managed KMS key is to unload the data to S3, create a new encrypted cluster with the desired KMS key, and reload the data. Options B, C, and D are incorrect because Redshift does not support enabling encryption on an existing cluster, modifying an existing cluster to enable encryption, or adding encryption to an unencrypted snapshot.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Unload the data from the existing cluster to S3, create a new encrypted cluster using the KMS key, and reload the data from S3.
Why this is correct
This is the recommended approach to migrate data to an encrypted cluster.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Change the cluster parameter group to enable encryption.
Why it's wrong here
Parameter groups do not control encryption.
- ✗
Modify the cluster and enable encryption in the Redshift console.
Why it's wrong here
Encryption cannot be enabled on an existing cluster.
- ✗
Take a snapshot of the cluster, copy the snapshot with encryption, and restore from the encrypted snapshot.
Why it's wrong here
Redshift snapshots are not used to encrypt clusters; the cluster must be encrypted at creation.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
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 |
What to study next
Got this wrong? Here's your next step.
Identify which DBS-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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FAQ
Questions learners often ask
What does this DBS-C01 question test?
Database Security — This question tests Database Security — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Unload the data from the existing cluster to S3, create a new encrypted cluster using the KMS key, and reload the data from S3. — Option A is correct. An existing unencrypted Redshift cluster cannot be encrypted in place. The only way to achieve encryption using a customer-managed KMS key is to unload the data to S3, create a new encrypted cluster with the desired KMS key, and reload the data. Options B, C, and D are incorrect because Redshift does not support enabling encryption on an existing cluster, modifying an existing cluster to enable encryption, or adding encryption to an unencrypted snapshot.
What should I do if I get this DBS-C01 question wrong?
Identify which DBS-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
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Last reviewed: Jun 20, 2026
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