The answer is Azure Policy with a 'require tag' definition in deny mode. This is the correct choice because Azure Policy acts as a gatekeeper at the subscription or management group level, evaluating every resource creation request against defined rules; when set to deny mode, it actively blocks provisioning of any resource that lacks the required cost center tag, preventing non-compliant resources from existing at all. On the Microsoft Azure Fundamentals AZ-900 exam, this scenario tests your understanding of governance versus tagging—a common trap is confusing Azure Policy with Azure RBAC (which controls permissions) or Azure Blueprints (which packages templates), but remember that only Policy can enforce rules like "require tag" with a hard deny. A useful memory tip: think of Policy as the bouncer who checks your ID (the tag) before letting you in—if you don't have it, you're denied entry.
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.
A company needs to ensure that no resources in any subscription can be created without a specific cost center tag. Which Azure feature accomplishes this?
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 a 'require tag' definition in deny mode
Azure Policy with a 'require tag' definition in deny mode is the correct choice because it enforces a rule that blocks the creation of any resource that does not include the specified cost center tag. Azure Policy evaluates resource creation requests against defined policies and can deny non-compliant requests before the resource is provisioned, ensuring governance at the subscription or management group level.
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 Blueprints with tag templates
Why it's wrong here
Blueprints can include policy assignments but Azure Policy itself is the enforcement mechanism.
✗
Azure RBAC with custom roles
Why it's wrong here
RBAC controls who can perform actions, not what metadata resources must include.
✓
Azure Policy with a 'require tag' definition in deny mode
Why this is correct
Azure Policy with 'Require a tag' in deny mode blocks all resource creation without the specified tag.
Related concept
Read the scenario before looking for a memorised answer.
✗
Azure Resource Groups with tag inheritance
Why it's wrong here
Resource Group tags don't automatically apply to child resources; Policy enforcement is needed.
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) with Azure Blueprints (which packages resources and policies) or RBAC (which controls permissions), leading them to choose a governance tool that does not actually block non-compliant resource creation.
Detailed technical explanation
How to think about this question
Azure Policy uses a JSON-based policy definition with an 'effect' parameter set to 'Deny' to block non-compliant resource creation. The policy rule evaluates the resource's tags during the PUT request to the Azure Resource Manager, and if the required tag is missing, the API returns a 403 Forbidden status. In a real-world scenario, this ensures that all resources in a subscription automatically inherit the cost center tag, enabling accurate chargeback and cost tracking without manual intervention.
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 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.
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 a 'require tag' definition in deny mode — Azure Policy with a 'require tag' definition in deny mode is the correct choice because it enforces a rule that blocks the creation of any resource that does not include the specified cost center tag. Azure Policy evaluates resource creation requests against defined policies and can deny non-compliant requests before the resource is provisioned, ensuring governance at the subscription or management group level.
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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