DVA-C02 Development with AWS Services Practice Question
This DVA-C02 practice question tests your understanding of development with aws services. 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.
Refer to the exhibit. An IAM policy is attached to a user. What is the effect when the user tries to upload an object to s3://example-bucket/secret/file.txt?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The upload fails because the Deny statement explicitly denies access to the secret/ prefix.
Correct: D. The Deny statement explicitly denies all s3 actions on the secret/ prefix. Even though the Allow statement allows PutObject on the bucket, the explicit Deny overrides it. Option A is wrong because Deny takes precedence. Option B is wrong because it's denied. Option C is wrong because the Deny is not conditional.
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.
✓
The upload fails because the Deny statement explicitly denies access to the secret/ prefix.
Why this is correct
Explicit Deny always overrides Allow.
Related concept
Standard ACLs match source addresses.
✗
The upload fails only if the user is not the bucket owner.
Why it's wrong here
Ownership does not override IAM policies.
✗
The upload succeeds because the Deny statement does not match the specific action.
Why it's wrong here
The Deny matches all s3 actions.
✗
The upload succeeds because the Allow statement grants s3:PutObject on the bucket.
Why it's wrong here
The explicit Deny overrides the Allow.
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.
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.
Development with AWS Services — This question tests Development with AWS Services — Standard ACLs match source addresses..
What is the correct answer to this question?
The correct answer is: The upload fails because the Deny statement explicitly denies access to the secret/ prefix. — Correct: D. The Deny statement explicitly denies all s3 actions on the secret/ prefix. Even though the Allow statement allows PutObject on the bucket, the explicit Deny overrides it. Option A is wrong because Deny takes precedence. Option B is wrong because it's denied. Option C is wrong because the Deny is not conditional.
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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Question Discussion
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