- A
Use S3 Batch Operations to copy objects to the destination bucket.
Why wrong: Batch Operations is not a continuous replication solution.
- B
Enable S3 Cross-Region Replication (CRR) with the appropriate KMS key and IAM role.
CRR supports SSE-KMS with proper configuration.
- C
Use S3 Transfer Acceleration to copy objects across regions.
Why wrong: Transfer Acceleration does not replicate.
- D
Use the AWS CLI s3 sync command scheduled in a cron job.
Why wrong: This is not automatic and may miss changes.
Question 562 of 1,786
DEA-C01 Data Operations and Support Practice Question
This DEA-C01 practice question tests your understanding of data operations and support. 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 data engineer is tasked with designing a disaster recovery solution for a data lake stored in Amazon S3. The data lake contains sensitive customer data that must be replicated to a different AWS Region. The engineer needs to ensure that all objects, including those with encryption using SSE-KMS, are replicated. Which solution meets the 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
✓
Enable S3 Cross-Region Replication (CRR) with the appropriate KMS key and IAM role.
The correct answer is B. S3 Cross-Region Replication (CRR) can replicate objects encrypted with SSE-KMS if the appropriate KMS key is configured and the IAM role has the necessary permissions for encryption operations. Option A (S3 Batch Operations) is designed for one-time bulk actions, not ongoing replication. Option C (S3 Transfer Acceleration) only speeds up data transfer but does not provide replication. Option D (AWS CLI s3 sync) is a manual, scheduled copy process and does not offer automatic, continuous replication.
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 S3 Batch Operations to copy objects to the destination bucket.
Why it's wrong here
Batch Operations is not a continuous replication solution.
- ✓
Enable S3 Cross-Region Replication (CRR) with the appropriate KMS key and IAM role.
Why this is correct
CRR supports SSE-KMS with proper configuration.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Use S3 Transfer Acceleration to copy objects across regions.
Why it's wrong here
Transfer Acceleration does not replicate.
- ✗
Use the AWS CLI s3 sync command scheduled in a cron job.
Why it's wrong here
This is not automatic and may miss changes.
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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Data Operations and Support — study guide chapter
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FAQ
Questions learners often ask
What does this DEA-C01 question test?
Data Operations and Support — This question tests Data Operations and Support — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Enable S3 Cross-Region Replication (CRR) with the appropriate KMS key and IAM role. — The correct answer is B. S3 Cross-Region Replication (CRR) can replicate objects encrypted with SSE-KMS if the appropriate KMS key is configured and the IAM role has the necessary permissions for encryption operations. Option A (S3 Batch Operations) is designed for one-time bulk actions, not ongoing replication. Option C (S3 Transfer Acceleration) only speeds up data transfer but does not provide replication. Option D (AWS CLI s3 sync) is a manual, scheduled copy process and does not offer automatic, continuous replication.
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
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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