Azure Policy with the 'Require tag' effect in deny mode is the correct choice because it enforces tagging rules at resource creation time by evaluating each deployment request against the policy definition and denying any provisioning that lacks the specified 'Owner' tag. This native governance feature ensures compliance before resources are deployed, making it the only option that actively blocks non-compliant deployments rather than merely flagging them after the fact. On the AZ-900 exam, this scenario tests your understanding of Azure Policy’s role in enforcing organizational standards at scale, often appearing as a distractor against RBAC (which controls permissions, not resource properties) or Azure Blueprints (which package templates but don’t enforce tag values at creation). A common trap is confusing Azure Policy’s audit mode with deny mode—remember that only deny mode prevents deployment, while audit merely logs non-compliance. Memory tip: think “deny before deploy” to recall that Azure Policy in deny mode stops untagged resources from being created.
AZ-900 Describe Azure management and governance Practice Question
This AZ-900 practice question tests your understanding of describe azure management and governance. 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.
Which Azure governance feature enables organizations to enforce that all virtual machines be tagged with a specific 'Owner' tag before deployment?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Azure Policy with 'Require tag' in deny mode
Azure Policy with the 'Require tag' effect in deny mode is the correct choice because it can enforce tagging rules at resource creation time by evaluating the request against the policy definition and denying any deployment that does not include the specified 'Owner' tag. This is a native governance feature designed to ensure compliance before resources are provisioned, unlike RBAC or templates which do not enforce tag values.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Azure RBAC with custom permissions
Why it's wrong here
RBAC controls who can create resources; Policy controls what attributes resources must have.
✓
Azure Policy with 'Require tag' in deny mode
Why this is correct
Policy with deny effect blocks resource creation that doesn't include the required Owner tag.
Related concept
Read the scenario before looking for a memorised answer.
✗
Azure Resource Manager template validation
Why it's wrong here
Template validation catches template errors; Policy enforcement applies across all deployment methods.
✗
Azure DevOps deployment gates
Why it's wrong here
DevOps gates pause pipelines for approval; Policy enforces tags at the Azure Resource Manager level.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Azure Policy (which enforces rules on resource properties) with Azure RBAC (which controls access permissions), leading them to select RBAC when the question is about enforcing a specific tag value.
Detailed technical explanation
How to think about this question
Under the hood, Azure Policy uses a policy engine that evaluates resource properties against policy definitions using the Azure Resource Manager REST API; when a policy with the 'deny' effect is assigned, it intercepts the PUT/PATCH request and returns a 403 Forbidden if the tag is missing, preventing the resource from being created. A subtle behavior is that policies are evaluated at deployment time, not retroactively, so existing resources without the tag would need a remediation task or a separate 'modify' effect to be updated. In a real-world scenario, a company might combine this with a 'Require a resource tag' policy to ensure cost center tracking across all VMs in a subscription.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this AZ-900 question in full detail.
Describe Azure management and governance — This question tests Describe Azure management and governance — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Azure Policy with 'Require tag' in deny mode — Azure Policy with the 'Require tag' effect in deny mode is the correct choice because it can enforce tagging rules at resource creation time by evaluating the request against the policy definition and denying any deployment that does not include the specified 'Owner' tag. This is a native governance feature designed to ensure compliance before resources are provisioned, unlike RBAC or templates which do not enforce tag values.
What should I do if I get this AZ-900 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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