The correct answer is that the user can attach and detach volumes that have the tag Environment=production, but cannot delete any volume. This is because the first statement in the IAM policy grants Allow effect for ec2:AttachVolume and ec2:DetachVolume actions, but only when the condition key ec2:ResourceTag/Environment equals production, creating a scoped permission. The second statement then applies a Deny effect to ec2:DeleteVolume for all resources, with no condition attached, which overrides any potential Allow for deletion. On the AWS Certified SAP on AWS Specialty PAS-C01 exam, this scenario tests your understanding of how IAM policy evaluation logic works, specifically that an explicit Deny always trumps an Allow, and that conditions only restrict the actions they are attached to. A common trap is assuming the Deny only applies to production-tagged volumes, but since it lacks a condition, it blocks deletion of any volume. Memory tip: “Allow with a tag, Deny without a tag—if it’s a delete, it’s a defeat.”
PAS-C01 Technology Practice Question
This PAS-C01 practice question tests your understanding of technology. 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.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The user can attach and detach volumes that have the tag Environment=production, but cannot delete any volume.
Option D is correct: The first statement allows AttachVolume and DetachVolume only if the volume has tag Environment=production. The second statement denies DeleteVolume for all volumes. However, the Deny statement is not conditional, so it applies to all volumes. Option A is incorrect because AttachVolume is allowed with the condition. Option B is incorrect because DeleteVolume is denied for all volumes. Option C is incorrect because the Allow statement has a condition.
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 user can attach and detach any volume regardless of tags.
Why it's wrong here
C is wrong: condition restricts to production tag.
✗
The user can delete any volume.
Why it's wrong here
B is wrong: DeleteVolume is denied.
✓
The user can attach and detach volumes that have the tag Environment=production, but cannot delete any volume.
Why this is correct
D is correct: Allow with condition, Deny for delete.
Related concept
Standard ACLs match source addresses.
✗
The user can attach and detach any volume in the production environment.
Why it's wrong here
A is wrong: only volumes with the tag are allowed.
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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
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 PAS-C01 ACL questions on filtering logic and placement.
Technology — This question tests Technology — Standard ACLs match source addresses..
What is the correct answer to this question?
The correct answer is: The user can attach and detach volumes that have the tag Environment=production, but cannot delete any volume. — Option D is correct: The first statement allows AttachVolume and DetachVolume only if the volume has tag Environment=production. The second statement denies DeleteVolume for all volumes. However, the Deny statement is not conditional, so it applies to all volumes. Option A is incorrect because AttachVolume is allowed with the condition. Option B is incorrect because DeleteVolume is denied for all volumes. Option C is incorrect because the Allow statement has a condition.
What should I do if I get this PAS-C01 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 PAS-C01 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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