This AZ-305 practice question tests your understanding of design identity, governance, and monitoring solutions. 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.
Your organization uses Azure Policy to enforce tagging standards. You need to ensure that any resource created without the required 'CostCenter' tag is automatically remediated by adding the tag with a default value. Which policy effect should you use?
append
Why wrong: Append adds the tag at creation but does not support remediation tasks for existing resources.
deny
Why wrong: Deny would block resource creation if the tag is missing, not automatically add it.
modify
Modify can automatically add the tag with a default value during creation and supports remediation for existing resources.
audit
Why wrong: Audit only logs non-compliance; it does not remediate.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
modify
Option C is correct because the 'modify' effect can add tags to resources during creation or on existing resources via remediation. Option A is wrong because 'deny' blocks creation. Option B is wrong because 'audit' only logs non-compliance. Option D is wrong because 'append' adds the tag at creation but does not support remediation for existing resources.
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
For each option: why learners choose it and why it is or isn't the right answer here.
append
Why it's wrong here
Append adds the tag at creation but does not support remediation tasks for existing resources.
deny
Why it's wrong here
Deny would block resource creation if the tag is missing, not automatically add it.
modify
Why this is correct
Modify can automatically add the tag with a default value during creation and supports remediation for existing resources.
Related concept
Standard ACLs match source addresses.
audit
Why it's wrong here
Audit only logs non-compliance; it does not remediate.
Common exam traps
ACLs are processed top to bottom. The first matching entry wins, and an implicit deny usually exists at the end.
Detailed technical explanation
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.
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
A startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
What to study next
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 AZ-305 ACL questions on filtering logic and placement.
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FAQ
Design identity, governance, and monitoring solutions — This question tests Design identity, governance, and monitoring solutions — Standard ACLs match source addresses..
The correct answer is: modify — Option C is correct because the 'modify' effect can add tags to resources during creation or on existing resources via remediation. Option A is wrong because 'deny' blocks creation. Option B is wrong because 'audit' only logs non-compliance. Option D is wrong because 'append' adds the tag at creation but does not support remediation for existing resources.
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 AZ-305 ACL questions on filtering logic and placement.
Standard ACLs match source addresses.
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Last reviewed: Jun 20, 2026
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