- A
Assign the built-in Contributor role to the resource group.
Why wrong: Contributor allows full management access, including deletion of VMs and modification of network interfaces, which exceeds the required permissions.
- B
Create a custom role with allowed actions for start and stop, and explicitly deny delete actions using NotActions.
A custom role can include 'Microsoft.Compute/virtualMachines/start/action' and 'stop/action' in the 'Actions' list, and 'Microsoft.Compute/virtualMachines/delete' in 'NotActions' to deny deletion. This provides exactly the required permissions.
- C
Use Azure Policy to prevent deletion of VMs in that resource group.
Why wrong: Azure Policy enforces compliance rules but does not grant permissions. It can deny deletion actions, but the engineers still need permissions to start/stop VMs, which Policy cannot provide.
- D
Add the engineers to an Microsoft Entra ID administrative unit and assign permissions for VM operations.
Why wrong: Microsoft Entra ID administrative units are used for administrative scope management of Microsoft Entra ID objects (users, groups), not for Azure resource permissions.
Quick Answer
The correct answer is to create a custom Azure RBAC role that uses Actions to allow start and stop operations while explicitly denying delete permissions through NotActions. This approach works because Azure RBAC evaluates all Actions first, then subtracts any NotActions, so listing Microsoft.Compute/virtualMachines/start/action and deallocate/action in Actions, while placing Microsoft.Compute/virtualMachines/delete in NotActions, ensures security engineers can manage VM state without ever being able to remove the resource. On the AZ-204 exam, this tests your understanding of the role definition JSON structure and the principle of least privilege, often appearing as a scenario where candidates mistakenly try to use a deny assignment or forget that NotActions override Actions. A common trap is thinking you can simply omit the delete action, but without an explicit deny, a future role assignment could grant it; the NotActions field makes the denial permanent. Memory tip: think "Allow the verbs, deny the eraser"—Actions for start/stop, NotActions for delete.
AZ-204 Implement Azure security Practice Question
This AZ-204 practice question tests your understanding of implement azure security. 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 company has several Azure subscriptions, and you need to create a custom role that allows security engineers to start and stop Azure virtual machines but not delete them or modify their network interfaces. The role must be scoped to a specific resource group. How should you define this custom role?
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 custom role with allowed actions for start and stop, and explicitly deny delete actions using NotActions.
Option B is correct because custom roles in Azure RBAC allow you to define granular permissions using Actions and NotActions. By specifying start and stop actions (e.g., Microsoft.Compute/virtualMachines/start/action and Microsoft.Compute/virtualMachines/deallocate/action) and excluding delete actions via NotActions (e.g., Microsoft.Compute/virtualMachines/delete), you can precisely control what security engineers can do. Scoping the role to a specific resource group ensures the permissions apply only to that resource group, meeting the requirement.
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.
- ✗
Assign the built-in Contributor role to the resource group.
Why it's wrong here
Contributor allows full management access, including deletion of VMs and modification of network interfaces, which exceeds the required permissions.
- ✓
Create a custom role with allowed actions for start and stop, and explicitly deny delete actions using NotActions.
Why this is correct
A custom role can include 'Microsoft.Compute/virtualMachines/start/action' and 'stop/action' in the 'Actions' list, and 'Microsoft.Compute/virtualMachines/delete' in 'NotActions' to deny deletion. This provides exactly the required permissions.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Use Azure Policy to prevent deletion of VMs in that resource group.
Why it's wrong here
Azure Policy enforces compliance rules but does not grant permissions. It can deny deletion actions, but the engineers still need permissions to start/stop VMs, which Policy cannot provide.
- ✗
Add the engineers to an Microsoft Entra ID administrative unit and assign permissions for VM operations.
Why it's wrong here
Microsoft Entra ID administrative units are used for administrative scope management of Microsoft Entra ID objects (users, groups), not for Azure resource permissions.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Azure Policy with RBAC, thinking Policy can control runtime actions like start/stop, when in fact Policy only governs resource configuration and compliance, not operational permissions.
Detailed technical explanation
How to think about this question
Under the hood, Azure RBAC evaluates permissions by combining Actions (allowed operations) and NotActions (excluded operations) from all applicable role assignments. The effective permissions are calculated as Actions - NotActions, so explicitly denying delete via NotActions ensures that even if a broader role grants delete, the custom role's deny takes precedence at the same scope. In real-world scenarios, this pattern is critical for least-privilege security, as it prevents accidental or malicious VM deletion while allowing necessary operational tasks like starting and stopping for cost management or patching.
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.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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FAQ
Questions learners often ask
What does this AZ-204 question test?
Implement Azure security — This question tests Implement Azure security — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Create a custom role with allowed actions for start and stop, and explicitly deny delete actions using NotActions. — Option B is correct because custom roles in Azure RBAC allow you to define granular permissions using Actions and NotActions. By specifying start and stop actions (e.g., Microsoft.Compute/virtualMachines/start/action and Microsoft.Compute/virtualMachines/deallocate/action) and excluding delete actions via NotActions (e.g., Microsoft.Compute/virtualMachines/delete), you can precisely control what security engineers can do. Scoping the role to a specific resource group ensures the permissions apply only to that resource group, meeting the requirement.
What should I do if I get this AZ-204 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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Last reviewed: Jun 11, 2026
This AZ-204 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-204 exam.
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