AZ-104 Manage Azure Identities and Governance Practice Question
A modify policy that appends a CostCenter tag was assigned to a management group. The policy shows as assigned, but older virtual machines still lack the tag. What must the administrator do to update those existing resources?
⚠ Common exam trap
Test-takers frequently assume a 'modify' policy effect automatically applies to all existing resources, but in reality, it only applies to new or updated resources unless a remediation task is explicitly created.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Create a remediation task for the policy assignment.
The 'modify' policy effect appends the CostCenter tag to new or updated resources automatically, but it does not retroactively apply to existing resources. To update older virtual machines that lack the tag, the administrator must create a remediation task for the policy assignment. This task uses Azure Policy's 'deployIfNotExists' or 'modify' effect to trigger a deployment that evaluates and corrects non-compliant existing resources.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Reassign the policy at a lower scope so it applies more quickly.
Why it's wrong here
Reassigning the policy to a lower scope changes which resources are included in future policy evaluations, but it does not perform a one-time evaluation or write to already deployed VMs. Azure Policy only evaluates resources when they are created or updated after assignment, unless a compliance scan or remediation task explicitly runs. Existing VMs with missing CostCenter tags remain noncompliant, and a narrower scope may even exclude resources that were previously covered.
When this WOULD be correct
If a policy assignment fails to apply to new resources at a lower scope due to inheritance issues, reassigning at the correct lower scope ensures new resources are evaluated. For example, a policy assigned at management group level not applying to a specific subscription.
- ✓
Create a remediation task for the policy assignment.
Why this is correct
Policy assignment alone evaluates future requests, but existing resources often need remediation before the policy effect is applied to them. A remediation task triggers the policy logic against already deployed resources and applies the configured correction when the managed identity has enough permissions. That is how missing tags on older VMs are brought into compliance.
- ✗
Change the policy effect from modify to audit.
Why it's wrong here
The audit effect appends a compliance note to the policy evaluation results and marks the VM as noncompliant, but it is purely observational and performs no write operation. Changing the effect from modify to audit would remove the ability to auto-correct the missing tag, leaving administrators to fix every VM manually. It improves visibility, not compliance, which is the opposite of the desired outcome.
When this WOULD be correct
If the question asked how to evaluate compliance of existing resources without making changes, or if the goal was to identify non-compliant resources for manual remediation, then changing the effect to audit would be correct.
- ✗
Add a CanNotDelete lock to the virtual machines.
Why it's wrong here
A CanNotDelete lock is an Azure resource lock that prohibits deleting a VM but still allows reads and modifications, so it does nothing to alter the missing CostCenter tag. Tag metadata remains writable and the lock neither triggers policy evaluation nor applies the modify effect. It fails to address the existing noncompliant resource and could be counterproductive if a future process needs to update tags.
When this WOULD be correct
An administrator needs to prevent accidental deletion of critical virtual machines that have been tagged with a specific tag. A CanNotDelete lock would be the correct answer to protect those resources from deletion.
Option-by-option analysis
Why each answer is right or wrong
Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The AZ-104 exam frequently reuses these exact scenarios with slightly different constraints.
✓Create a remediation task for the policy assignment.Correct answer▾
Why this is correct
Policy assignment alone evaluates future requests, but existing resources often need remediation before the policy effect is applied to them. A remediation task triggers the policy logic against already deployed resources and applies the configured correction when the managed identity has enough permissions. That is how missing tags on older VMs are brought into compliance.
✗Reassign the policy at a lower scope so it applies more quickly.Wrong answer — click to see why▾
Why this is wrong here
Reassigning the policy at a lower scope does not trigger remediation for existing resources; it only applies to new resources. The modify effect requires a remediation task to update existing non-compliant resources.
★ When this WOULD be the correct answer
If a policy assignment fails to apply to new resources at a lower scope due to inheritance issues, reassigning at the correct lower scope ensures new resources are evaluated. For example, a policy assigned at management group level not applying to a specific subscription.
Why candidates choose this
Candidates may think that assigning the policy closer to the resources will force it to apply faster, misunderstanding that modify policies require explicit remediation for existing resources.
✗Change the policy effect from modify to audit.Wrong answer — click to see why▾
Why this is wrong here
Changing the policy effect from modify to audit would only report compliance without automatically adding the tag; it does not update existing resources.
★ When this WOULD be the correct answer
If the question asked how to evaluate compliance of existing resources without making changes, or if the goal was to identify non-compliant resources for manual remediation, then changing the effect to audit would be correct.
Why candidates choose this
Candidates may confuse the modify effect with audit, thinking that audit can also apply tags, or they may believe that changing the effect triggers automatic remediation.
✗Add a CanNotDelete lock to the virtual machines.Wrong answer — click to see why▾
Why this is wrong here
Adding a CanNotDelete lock prevents deletion but does not apply tags to existing resources. The question requires updating older VMs with a CostCenter tag, which is a policy remediation task, not a lock.
★ When this WOULD be the correct answer
An administrator needs to prevent accidental deletion of critical virtual machines that have been tagged with a specific tag. A CanNotDelete lock would be the correct answer to protect those resources from deletion.
Why candidates choose this
Candidates may confuse resource locks with policy enforcement, thinking a lock can force tag updates or that it's a general protection mechanism that also applies tags.
Analysis generated from the official AZ-104blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”
Go deeper
Related to this question
Learn chapter
Privileged Identity Management (PIM)
Key term
Group
A group is a collection of users, devices, or other objects that are assigned permissions and policies together for simplified management in identity and governance systems like Microsoft Entra ID.
Key term
Management group
A Management group is a container in Microsoft Azure that helps you organize and manage access, policies, and compliance across multiple Azure subscriptions.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This AZ-104 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the AZ-104 exam.