- A
SSE-C
SSE-C allows customers to provide and manage their own encryption keys, meeting the requirement.
- B
Client-side encryption
Why wrong: Client-side encryption encrypts data before upload and is not an S3 server-side encryption option.
- C
SSE-KMS
Why wrong: SSE-KMS uses AWS KMS keys managed by AWS; while customers can control key policies, the actual encryption keys are AWS-managed.
- D
SSE-S3
Why wrong: SSE-S3 uses AWS-managed keys, so the company does not manage the keys.
Question 1,478 of 1,748
S3 Encryption with Customer-Managed Keys
This SCS-C02 practice question tests your understanding of data protection. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 is using Amazon S3 to store sensitive customer data. They need to ensure that data is encrypted at rest and that the encryption keys are managed by the company, not AWS. Which S3 encryption option should they use?
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
✓
SSE-C
SSE-C is correct because it allows customers to provide and manage their own encryption keys. SSE-S3 uses AWS-managed keys. SSE-KMS uses AWS KMS keys which are managed by AWS, though the customer can manage KMS key policies but not the actual encryption keys used by S3. Client-side encryption is not an S3 server-side encryption option.
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.
- ✓
SSE-C
Why this is correct
SSE-C allows customers to provide and manage their own encryption keys, meeting the requirement.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Client-side encryption
Why it's wrong here
Client-side encryption encrypts data before upload and is not an S3 server-side encryption option.
- ✗
SSE-KMS
Why it's wrong here
SSE-KMS uses AWS KMS keys managed by AWS; while customers can control key policies, the actual encryption keys are AWS-managed.
- ✗
SSE-S3
Why it's wrong here
SSE-S3 uses AWS-managed keys, so the company does not manage the keys.
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 SCS-C02 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.
- →
Data Protection — study guide chapter
Learn the concepts, then practise the questions
- →
Data Protection practice questions
Targeted practice on this topic area only
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All SCS-C02 questions
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AWS Certified Security Specialty SCS-C02 study guide
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SCS-C02 practice test guide
How to use practice tests most effectively before exam day
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FAQ
Questions learners often ask
What does this SCS-C02 question test?
Data Protection — This question tests Data Protection — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: SSE-C — SSE-C is correct because it allows customers to provide and manage their own encryption keys. SSE-S3 uses AWS-managed keys. SSE-KMS uses AWS KMS keys which are managed by AWS, though the customer can manage KMS key policies but not the actual encryption keys used by S3. Client-side encryption is not an S3 server-side encryption option.
What should I do if I get this SCS-C02 question wrong?
Identify which SCS-C02 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 →
Same concept, more angles
1 more ways this is tested on SCS-C02
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A company is designing a data lake on Amazon S3 and needs to encrypt data at rest. The compliance team requires that the encryption keys be managed by the company and not by AWS. Which encryption option should be used?
easy- ✓ A.SSE-C
- B.SSE-S3
- C.Client-side encryption
- D.SSE-KMS
Why A: Option A (SSE-C) is correct because SSE-C allows the customer to provide their own encryption keys, meeting the compliance requirement that keys be managed by the company and not by AWS. Option B (SSE-S3) is incorrect because AWS manages the keys. Option D (SSE-KMS) is incorrect because even with customer-managed keys, AWS KMS stores and manages the keys. Option C (client-side encryption) is not server-side encryption and would require the customer to manage encryption before upload, but the question specifically asks for encryption at rest on S3, and server-side options are appropriate; SSE-C is the only server-side option where AWS does not manage the keys.
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Last reviewed: Jun 20, 2026
This SCS-C02 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 SCS-C02 exam.
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