This CCSP practice question tests your understanding of cloud security operations. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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.
Exhibit
Refer to the exhibit.
Error log from cloud storage sync tool:
[ERROR] Failed to sync file 'financial_report.xlsx'. Cause: AccessDenied (403) - User: arn:aws:iam::123456789012:role/data-sync-role is not authorized to perform: s3:GetObject on resource: arn:aws:s3:::data-bucket-2024/financial_report.xlsx because no identity-based policy allows the s3:GetObject action
Refer to the exhibit. A data sync job fails with the error shown. The IAM role 'data-sync-role' has the following policy attached:
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Refer to the exhibit.
Error log from cloud storage sync tool:
[ERROR] Failed to sync file 'financial_report.xlsx'. Cause: AccessDenied (403) - User: arn:aws:iam::123456789012:role/data-sync-role is not authorized to perform: s3:GetObject on resource: arn:aws:s3:::data-bucket-2024/financial_report.xlsx because no identity-based policy allows the s3:GetObject action
A
The resource ARN in the policy is incorrectly formatted, causing the action to not be applied.
The ARN uses wildcards in the wrong positions; S3 object ARNs require bucket name and key without account or region.
B
The role 'data-sync-role' is not attached to the sync job.
Why wrong: The error shows the role is being used, so it is attached.
C
The bucket 'data-bucket-2024' does not exist.
Why wrong: The error indicates access denied, not bucket not found.
D
There is an explicit Deny policy blocking the action.
Why wrong: The error says 'no identity-based policy allows', meaning no allow statement grants the action.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The resource ARN in the policy is incorrectly formatted, causing the action to not be applied.
Option C is correct. The resource ARN in the policy uses wildcards incorrectly: 'arn:aws:s3:*:*:data-bucket-2024/*' is not a valid S3 object ARN. The correct format is 'arn:aws:s3:::data-bucket-2024/*'. The malformed ARN means the policy does not actually grant access to the object. Option A is incorrect because the bucket exists. Option B is incorrect because the role is attached. Option D is incorrect because there is no explicit deny.
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 resource ARN in the policy is incorrectly formatted, causing the action to not be applied.
Why this is correct
The ARN uses wildcards in the wrong positions; S3 object ARNs require bucket name and key without account or region.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Standard ACLs match source addresses.
✗
The role 'data-sync-role' is not attached to the sync job.
Why it's wrong here
The error shows the role is being used, so it is attached.
✗
The bucket 'data-bucket-2024' does not exist.
Why it's wrong here
The error indicates access denied, not bucket not found.
✗
There is an explicit Deny policy blocking the action.
Why it's wrong here
The error says 'no identity-based policy allows', meaning no allow statement grants the action.
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.
Trap categories for this question
Command / output trap
The error shows the role is being used, so it is attached.
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 security analyst at a medium-sized enterprise encounters this scenario during an investigation or architecture review. The correct answer reflects best practice for the specific threat or control described. 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. Security exam questions test whether you can match controls to threats in context — not just recall definitions.
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 CCSP ACL questions on filtering logic and placement.
Cloud Security Operations — This question tests Cloud Security Operations — Standard ACLs match source addresses..
What is the correct answer to this question?
The correct answer is: The resource ARN in the policy is incorrectly formatted, causing the action to not be applied. — Option C is correct. The resource ARN in the policy uses wildcards incorrectly: 'arn:aws:s3:*:*:data-bucket-2024/*' is not a valid S3 object ARN. The correct format is 'arn:aws:s3:::data-bucket-2024/*'. The malformed ARN means the policy does not actually grant access to the object. Option A is incorrect because the bucket exists. Option B is incorrect because the role is attached. Option D is incorrect because there is no explicit deny.
What should I do if I get this CCSP 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 CCSP ACL questions on filtering logic and placement.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
Standard ACLs match source addresses.
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