- A
Encrypt the data client-side before uploading to S3.
Why wrong: Client-side encryption is not at-rest encryption managed by S3.
- B
Configure the S3 bucket to use SSE-KMS with a customer-managed KMS key and enable CloudTrail for KMS events.
SSE-KMS with customer-managed key provides encryption and auditability via CloudTrail.
- C
Enable default SSE-S3 encryption on the S3 bucket.
Why wrong: SSE-S3 uses AWS-managed keys, not customer-managed.
- D
Use SSE-C with a customer-provided key.
Why wrong: SSE-C does not use KMS and does not provide audit logging of key usage.
Question 1,003 of 1,786
DEA-C01 Data Security and Governance Practice Question
This DEA-C01 practice question tests your understanding of data security and governance. 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 AWS Glue to process sensitive customer data stored in S3. The security team requires that all data be encrypted at rest using a customer-managed KMS key and that access to the key be auditable. Which solution meets these requirements?
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
✓
Configure the S3 bucket to use SSE-KMS with a customer-managed KMS key and enable CloudTrail for KMS events.
Option B is correct. SSE-KMS with a customer-managed KMS key provides encryption at rest and, when combined with CloudTrail logging for KMS events, offers full auditability of key usage. Option A (client-side encryption) does not encrypt data at rest within S3; it encrypts before upload. Option C (SSE-S3) uses AWS-managed keys, which do not allow customer audit of key access. Option D (SSE-C) relies on customer-provided keys that are not managed by KMS and cannot be audited via CloudTrail.
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.
- ✗
Encrypt the data client-side before uploading to S3.
Why it's wrong here
Client-side encryption is not at-rest encryption managed by S3.
- ✓
Configure the S3 bucket to use SSE-KMS with a customer-managed KMS key and enable CloudTrail for KMS events.
Why this is correct
SSE-KMS with customer-managed key provides encryption and auditability via CloudTrail.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Enable default SSE-S3 encryption on the S3 bucket.
Why it's wrong here
SSE-S3 uses AWS-managed keys, not customer-managed.
- ✗
Use SSE-C with a customer-provided key.
Why it's wrong here
SSE-C does not use KMS and does not provide audit logging of key usage.
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 DEA-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 DEA-C01 question test?
Data Security and Governance — This question tests Data Security and Governance — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Configure the S3 bucket to use SSE-KMS with a customer-managed KMS key and enable CloudTrail for KMS events. — Option B is correct. SSE-KMS with a customer-managed KMS key provides encryption at rest and, when combined with CloudTrail logging for KMS events, offers full auditability of key usage. Option A (client-side encryption) does not encrypt data at rest within S3; it encrypts before upload. Option C (SSE-S3) uses AWS-managed keys, which do not allow customer audit of key access. Option D (SSE-C) relies on customer-provided keys that are not managed by KMS and cannot be audited via CloudTrail.
What should I do if I get this DEA-C01 question wrong?
Identify which DEA-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
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
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Last reviewed: Jun 20, 2026
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