- A
Create a new bucket and copy objects there.
Why wrong: Overly complex and not necessary.
- B
Add an Allow statement in the bucket policy for the user.
Why wrong: Explicit deny overrides allow.
- C
Remove the Deny statement from the bucket policy.
Removing the explicit deny allows other permissions to take effect.
- D
Add the user to the bucket ACL with read permission.
Why wrong: Explicit deny overrides ACLs.
Question 939 of 1,616
How to Override an Explicit Deny in S3 Bucket Policy
This DVA-C02 practice question tests your understanding of security. 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 has an S3 bucket with a policy that denies access to all users. The bucket owner wants to grant read access to a specific IAM user. What must be done?
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
✓
Remove the Deny statement from the bucket policy.
Option C is correct because an explicit deny in a bucket policy overrides any allow statement. Therefore, the only way to grant access is to remove or modify the deny statement. Option A is unnecessary as the existing bucket can be used if the policy is changed. Option B is incorrect because adding an Allow statement in the bucket policy does not override the existing explicit deny; the deny still takes precedence. Option D is incorrect because bucket ACLs are also overridden by explicit deny in the bucket policy.
Key principle: ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Create a new bucket and copy objects there.
Why it's wrong here
Overly complex and not necessary.
- ✗
Add an Allow statement in the bucket policy for the user.
Why it's wrong here
Explicit deny overrides allow.
- ✓
Remove the Deny statement from the bucket policy.
Why this is correct
Removing the explicit deny allows other permissions to take effect.
Related concept
Standard ACLs match source addresses.
- ✗
Add the user to the bucket ACL with read permission.
Why it's wrong here
Explicit deny overrides ACLs.
Common exam traps
Common exam trap: ACLs stop at the first match
ACLs are processed top to bottom. The first matching entry wins, and an implicit deny usually exists at the end.
Detailed technical explanation
How to think about this question
ACL questions test precision: source, destination, protocol, port and direction. A generally correct ACL can still fail if it is applied on the wrong interface or in the wrong direction.
KKey Concepts to Remember
- Standard ACLs match source addresses.
- Extended ACLs can match source, destination, protocol and ports.
- The first matching ACL entry is used.
- There is usually an implicit deny at the end.
TExam Day Tips
- Check inbound versus outbound direction.
- Read the ACL from top to bottom.
- Look for a broader permit or deny above the intended line.
Key takeaway
ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
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 ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related DVA-C02 ACL questions on filtering logic and placement.
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FAQ
Questions learners often ask
What does this DVA-C02 question test?
Security — This question tests Security — Standard ACLs match source addresses..
What is the correct answer to this question?
The correct answer is: Remove the Deny statement from the bucket policy. — Option C is correct because an explicit deny in a bucket policy overrides any allow statement. Therefore, the only way to grant access is to remove or modify the deny statement. Option A is unnecessary as the existing bucket can be used if the policy is changed. Option B is incorrect because adding an Allow statement in the bucket policy does not override the existing explicit deny; the deny still takes precedence. Option D is incorrect because bucket ACLs are also overridden by explicit deny in the bucket policy.
What should I do if I get this DVA-C02 question wrong?
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related DVA-C02 ACL questions on filtering logic and placement.
What is the key concept behind this question?
Standard ACLs match source addresses.
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Last reviewed: Jun 20, 2026
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