- A
Use Server-Side Encryption with Amazon S3-Managed Keys (SSE-S3).
SSE-S3 automatically rotates keys every year.
- B
Use client-side encryption with an AWS KMS key.
Why wrong: Client-side encryption is managed by the client, not AWS.
- C
Use Server-Side Encryption with Customer-Provided Keys (SSE-C).
Why wrong: SSE-C requires the customer to manage and rotate keys.
- D
Use Server-Side Encryption with AWS KMS-Managed Keys (SSE-KMS) with manual key rotation.
Why wrong: Manual rotation does not meet the automatic rotation requirement.
- E
Use Server-Side Encryption with AWS KMS-Managed Keys (SSE-KMS) with automatic key rotation enabled.
KMS keys can be configured for automatic annual rotation.
Question 636 of 1,786
DEA-C01 Data Store Management Practice Question
This DEA-C01 practice question tests your understanding of data store management. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 designing a data lake on AWS using Amazon S3. The data includes sensitive customer information that must be encrypted at rest. The company requires that encryption keys be managed by AWS, but the keys must be rotated automatically every year. Which TWO options meet these requirements? (Choose TWO.)
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
✓
Use Server-Side Encryption with Amazon S3-Managed Keys (SSE-S3).
SSE-S3 is correct because it provides server-side encryption where AWS manages the encryption keys entirely, including automatic annual rotation. This meets the requirement of encryption at rest with AWS-managed keys and automatic yearly rotation without any additional configuration.
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.
- ✓
Use Server-Side Encryption with Amazon S3-Managed Keys (SSE-S3).
Why this is correct
SSE-S3 automatically rotates keys every year.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Use client-side encryption with an AWS KMS key.
Why it's wrong here
Client-side encryption is managed by the client, not AWS.
- ✗
Use Server-Side Encryption with Customer-Provided Keys (SSE-C).
Why it's wrong here
SSE-C requires the customer to manage and rotate keys.
- ✗
Use Server-Side Encryption with AWS KMS-Managed Keys (SSE-KMS) with manual key rotation.
Why it's wrong here
Manual rotation does not meet the automatic rotation requirement.
- ✓
Use Server-Side Encryption with AWS KMS-Managed Keys (SSE-KMS) with automatic key rotation enabled.
Why this is correct
KMS keys can be configured for automatic annual rotation.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may assume SSE-KMS with automatic key rotation is the only option for automatic rotation, but SSE-S3 also provides automatic annual rotation, and the question specifically requires AWS-managed keys, making both SSE-S3 and SSE-KMS with automatic rotation valid.
Detailed technical explanation
How to think about this question
SSE-S3 uses AES-256 encryption with keys that are automatically rotated by AWS on an annual basis as part of the service's default behavior. Under the hood, each object is encrypted with a unique data key, which is then encrypted by a master key that is regularly rotated. This ensures compliance with policies requiring periodic key rotation without any operational overhead.
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.
TExam Day Tips
- 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.
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FAQ
Questions learners often ask
What does this DEA-C01 question test?
Data Store Management — This question tests Data Store Management — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use Server-Side Encryption with Amazon S3-Managed Keys (SSE-S3). — SSE-S3 is correct because it provides server-side encryption where AWS manages the encryption keys entirely, including automatic annual rotation. This meets the requirement of encryption at rest with AWS-managed keys and automatic yearly rotation without any additional configuration.
What should I do if I get this DEA-C01 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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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: Jul 4, 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.
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