- A
Enable S3 Transfer Acceleration.
Why wrong: Not related to access.
- B
Verify the bucket's ACLs allow access.
Why wrong: ACLs are not used when bucket policy exists.
- C
Check the bucket policy for any explicit denies.
Explicit deny overrides allow.
- D
Check the IAM user's attached policies.
IAM policies must grant access.
- E
Enable CloudTrail to log bucket access.
Why wrong: Logging does not resolve permission issues.
Question 1,159 of 1,616
DVA-C02 IAM Policy Practice Question
This DVA-C02 practice question tests your understanding of troubleshooting and optimization. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. A key principle to apply: iAM Policy. 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 developer is troubleshooting an issue where an S3 bucket policy is not granting access to an IAM user. Which TWO actions should the developer take to resolve the issue?
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
✓
Check the bucket policy for any explicit denies.
To resolve an S3 bucket policy access issue, the developer should check both the bucket policy and the IAM user's attached policies. The bucket policy may contain an explicit deny that overrides allows, and the IAM user policy must grant the necessary permissions. Option C and D are correct. Option A (S3 Transfer Acceleration) affects data transfer speed, not permissions. Option B (ACLs) is legacy and not evaluated when a bucket policy exists. Option E (CloudTrail) logs API calls but does not grant access.
Key principle: IAM Policy
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Enable S3 Transfer Acceleration.
Why it's wrong here
Not related to access.
- ✗
Verify the bucket's ACLs allow access.
Why it's wrong here
ACLs are not used when bucket policy exists.
- ✓
Check the bucket policy for any explicit denies.
Why this is correct
Explicit deny overrides allow.
Related concept
IAM Policy
- ✓
Check the IAM user's attached policies.
Why this is correct
IAM policies must grant access.
Related concept
IAM Policy
- ✗
Enable CloudTrail to log bucket access.
Why it's wrong here
Logging does not resolve permission issues.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Candidates often overlook that explicit denies in bucket policies override any allow, or that IAM user policies must also permit the action.
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
- IAM Policy
- S3 Bucket Policy
- Explicit Deny
- Policy Evaluation Logic
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
IAM Policy
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.
Visual reference
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 iAM Policy, then practise related DVA-C02 questions on the same topic to reinforce the concept.
- →
Troubleshooting and Optimization — study guide chapter
Learn the concepts, then practise the questions
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Troubleshooting and Optimization practice questions
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FAQ
Questions learners often ask
What does this DVA-C02 question test?
Troubleshooting and Optimization — This question tests Troubleshooting and Optimization — IAM Policy.
What is the correct answer to this question?
The correct answer is: Check the bucket policy for any explicit denies. — To resolve an S3 bucket policy access issue, the developer should check both the bucket policy and the IAM user's attached policies. The bucket policy may contain an explicit deny that overrides allows, and the IAM user policy must grant the necessary permissions. Option C and D are correct. Option A (S3 Transfer Acceleration) affects data transfer speed, not permissions. Option B (ACLs) is legacy and not evaluated when a bucket policy exists. Option E (CloudTrail) logs API calls but does not grant access.
What should I do if I get this DVA-C02 question wrong?
Review iAM Policy, then practise related DVA-C02 questions on the same topic to reinforce the concept.
What is the key concept behind this question?
IAM Policy
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Last reviewed: Jun 20, 2026
This DVA-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 DVA-C02 exam.
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