- A
AWS owned keys
Why wrong: AWS owned keys are used by AWS services and are not accessible to customers; they cannot be rotated by the customer.
- B
AWS managed keys (aws/xxx)
Correct. AWS managed keys have automatic annual rotation enabled by default, providing seamless compliance with rotation policies.
- C
Customer managed keys
Why wrong: Customer managed keys can have automatic rotation, but it must be explicitly enabled; they do not rotate automatically without configuration.
- D
Custom key stores
Why wrong: Custom key stores are backed by an AWS CloudHSM cluster and do not support automatic key rotation.
Question 1,320 of 1,786
DEA-C01 AWS KMS 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. A key principle to apply: aWS KMS. 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 KMS to encrypt data in Amazon S3 and RDS. They need to ensure that encryption keys are automatically rotated every year. Which KMS key type supports automatic annual rotation?
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
✓
AWS managed keys (aws/xxx)
AWS managed keys (AWS-managed KMS keys) have automatic rotation enabled by default every year, making option B correct. AWS owned keys are not visible to the customer and cannot be managed. Customer managed keys require explicit enabling of rotation, so they are not automatically rotated. Custom key stores do not support automatic rotation. Therefore, only AWS managed keys provide automatic annual rotation without additional configuration.
Key principle: AWS KMS
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
AWS owned keys
Why it's wrong here
AWS owned keys are used by AWS services and are not accessible to customers; they cannot be rotated by the customer.
- ✓
AWS managed keys (aws/xxx)
Why this is correct
Correct. AWS managed keys have automatic annual rotation enabled by default, providing seamless compliance with rotation policies.
Related concept
AWS KMS
- ✗
Customer managed keys
Why it's wrong here
Customer managed keys can have automatic rotation, but it must be explicitly enabled; they do not rotate automatically without configuration.
- ✗
Custom key stores
Why it's wrong here
Custom key stores are backed by an AWS CloudHSM cluster and do not support automatic key rotation.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Candidates may confuse customer managed keys with AWS managed keys and think that all KMS keys support automatic rotation equally. However, only AWS managed keys have automatic rotation enabled by default; customer managed keys require manual activation.
Detailed technical explanation
How to think about this question
Treat this as a scenario question. Identify the problem, the constraint, and the best action. Then compare each option against those facts.
KKey Concepts to Remember
- AWS KMS
- AWS managed keys
- Customer managed keys
- Automatic key rotation
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
AWS KMS
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.
Review aWS KMS, then practise related DEA-C01 questions on the same topic to reinforce the concept.
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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 — AWS KMS.
What is the correct answer to this question?
The correct answer is: AWS managed keys (aws/xxx) — AWS managed keys (AWS-managed KMS keys) have automatic rotation enabled by default every year, making option B correct. AWS owned keys are not visible to the customer and cannot be managed. Customer managed keys require explicit enabling of rotation, so they are not automatically rotated. Custom key stores do not support automatic rotation. Therefore, only AWS managed keys provide automatic annual rotation without additional configuration.
What should I do if I get this DEA-C01 question wrong?
Review aWS KMS, then practise related DEA-C01 questions on the same topic to reinforce the concept.
What is the key concept behind this question?
AWS KMS
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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.
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