Question 211 of 997

Azure Policy: Deny Contributors from Creating VMs

This AZ-204 practice question tests your understanding of monitor, troubleshoot, and optimize azure 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.

Exhibit

Refer to the exhibit.
```json
{
  "properties": {
    "policyRule": {
      "if": {
        "field": "type",
        "equals": "Microsoft.Compute/virtualMachines"
      },
      "then": {
        "effect": "deny",
        "details": {
          "roleDefinitionIds": [
            "/providers/Microsoft.Authorization/roleDefinitions/b24988ac-6180-42a0-ab88-20f7382dd24c"
          ]
        }
      }
    }
  }
}
```

You have an Azure Policy as shown in the exhibit. The roleDefinitionId corresponds to the 'Contributor' role. What does this policy do?

Exhibit

Refer to the exhibit.
```json
{
  "properties": {
    "policyRule": {
      "if": {
        "field": "type",
        "equals": "Microsoft.Compute/virtualMachines"
      },
      "then": {
        "effect": "deny",
        "details": {
          "roleDefinitionIds": [
            "/providers/Microsoft.Authorization/roleDefinitions/b24988ac-6180-42a0-ab88-20f7382dd24c"
          ]
        }
      }
    }
  }
}
```

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

Denies Contributors from creating or modifying virtual machines

This Azure Policy uses a 'Deny' effect with a condition that checks if the 'roleDefinitionId' equals the Contributor role's ID. When a user with the Contributor role attempts to create or modify a virtual machine, the policy evaluates the condition and denies the operation, effectively preventing Contributors from performing those actions.

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.

  • Denies Contributors from creating or modifying virtual machines

    Why this is correct

    The policy denies specified actions on VMs for the Contributor role.

    Related concept

    Read the scenario before looking for a memorised answer.

  • Allows Contributors to create virtual machines

    Why it's wrong here

    The effect is deny, not allow.

  • Audits when Contributors create virtual machines

    Why it's wrong here

    The effect is deny, not audit.

  • Deploys a virtual machine when a Contributor action occurs

    Why it's wrong here

    The effect is deny, not deploy.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap here is that candidates confuse the 'Deny' effect with 'Audit' or 'DeployIfNotExists', or mistakenly think the policy grants permissions rather than restricting them based on the role definition.

Detailed technical explanation

How to think about this question

Under the hood, Azure Policy's 'Deny' effect evaluates the condition during resource creation or update via Azure Resource Manager (ARM). The 'roleDefinitionId' field in the policy condition refers to the GUID of the Azure RBAC role (e.g., 'b24988ac-6180-42a0-ab88-20f7382dd24c' for Contributor). This policy is commonly used to enforce separation of duties, such as preventing Contributors from provisioning compute resources while allowing them to manage other resources like storage or networking.

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?

Monitor, troubleshoot, and optimize Azure solutions — This question tests Monitor, troubleshoot, and optimize Azure solutions — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: Denies Contributors from creating or modifying virtual machines — This Azure Policy uses a 'Deny' effect with a condition that checks if the 'roleDefinitionId' equals the Contributor role's ID. When a user with the Contributor role attempts to create or modify a virtual machine, the policy evaluates the condition and denies the operation, effectively preventing Contributors from performing those actions.

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: Jul 4, 2026

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