Quick Answer
The correct answer is SSE-C, or Server-Side Encryption with Customer-Provided Keys. This option is the right choice because it allows the company to manage their own encryption keys for data at rest in Amazon S3, including the ability to rotate them annually, while still leveraging AWS server-side encryption to encrypt objects before they are written to disk. On the AWS Certified Data Engineer Associate DEA-C01 exam, this question tests your understanding of the three S3 server-side encryption models and their key management boundaries; a common trap is confusing SSE-C with SSE-KMS, but remember that SSE-KMS still involves AWS managing the key material within a KMS key, whereas SSE-C gives you full control over the key lifecycle. For a quick memory tip, think of the "C" in SSE-C as standing for "Customer-Controlled" keys, distinguishing it from the AWS-managed options.
This DEA-C01 practice question tests your understanding of data security and governance. 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 wants to encrypt data at rest in Amazon S3 using server-side encryption. They need to manage the encryption keys themselves and rotate them annually. Which S3 encryption option should they use?
SSE-KMS
Why wrong: SSE-KMS uses AWS KMS keys, but the customer still does not manage the key material directly; AWS manages the KMS key.
SSE-S3
Why wrong: SSE-S3 uses AWS-managed keys, not customer-managed.
SSE-C
SSE-C allows the customer to provide their own encryption keys and manage them.
Client-side encryption
Why wrong: Client-side encryption is not server-side encryption; it encrypts data before sending to S3.
Answer choices
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 allows the customer to provide and manage their own encryption keys. SSE-S3 uses AWS-managed keys, and SSE-KMS uses AWS KMS keys but with AWS managing the key material. Option A is wrong because SSE-S3 does not allow customer-managed keys. Option B is wrong because SSE-KMS still involves AWS management of the key material. Option D is wrong because client-side encryption is not server-side.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
SSE-KMS
Why it's wrong here
SSE-KMS uses AWS KMS keys, but the customer still does not manage the key material directly; AWS manages the KMS key.
SSE-S3
Why it's wrong here
SSE-S3 uses AWS-managed keys, not customer-managed.
SSE-C
Why this is correct
SSE-C allows the customer to provide their own encryption keys and manage them.
Related concept
Read the scenario before looking for a memorised answer.
Client-side encryption
Why it's wrong here
Client-side encryption is not server-side encryption; it encrypts data before sending to S3.
Common exam traps
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
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.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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.
What to study next
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.
Data Security and Governance — study guide chapter
Learn the concepts, then practise the questions
Data Security and Governance practice questions
Targeted practice on this topic area only
All DEA-C01 questions
1,786 questions across all exam domains
AWS Certified Data Engineer Associate DEA-C01 study guide
Full concept coverage aligned to exam objectives
DEA-C01 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Practise DEA-C01 questions linked to Data Ingestion and Transformation.
Practise DEA-C01 questions linked to Data Operations and Support.
Practise DEA-C01 questions linked to Data Security and Governance.
Practise DEA-C01 questions linked to Data Store Management.
Practise DEA-C01 questions linked to DEA-C01 fundamentals.
Practise DEA-C01 questions linked to DEA-C01 scenario.
Practise DEA-C01 questions linked to DEA-C01 troubleshooting.
Practice this exam
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Data Security and Governance — This question tests Data Security and Governance — Read the scenario before looking for a memorised answer..
The correct answer is: SSE-C — SSE-C allows the customer to provide and manage their own encryption keys. SSE-S3 uses AWS-managed keys, and SSE-KMS uses AWS KMS keys but with AWS managing the key material. Option A is wrong because SSE-S3 does not allow customer-managed keys. Option B is wrong because SSE-KMS still involves AWS management of the key material. Option D is wrong because client-side encryption is not server-side.
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.
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 →
Last reviewed: Jun 20, 2026
This DEA-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 DEA-C01 exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.