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Question 391 of 1,000
Secure Azure using Microsoft Defender for Cloud and Microsoft Sentinel →hardMultiple ChoiceObjective-mapped

Quick Answer

The correct answer is that the policy assignment requires a remediation task to be created for existing non-compliant VMs. This is because the deployIfNotExists effect only evaluates and deploys resources during the compliance scan cycle, but it does not automatically apply the deployment to resources that already exist at the time of assignment; a separate remediation task must be triggered to retroactively fix non-compliant resources. On the AZ-500 exam, this concept tests your understanding of how Azure Policy effects behave differently for new versus existing resources, and it is a common trap to assume that deployIfNotExists works like a real-time deployment. Remember that deployIfNotExists is a "lazy" effect—it waits for a trigger—so always think "remediate existing, deploy new." A useful memory tip: "New gets it now, old needs a nudge."

AZ-500 Practice Question: Secure Azure using Microsoft Defender for Cloud and Microsoft Sentinel

This AZ-500 practice question tests your understanding of secure azure using microsoft defender for cloud and microsoft sentinel. 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

{
  "properties": {
    "displayName": "Deploy Log Analytics agent for Linux VMs",
    "policyType": "BuiltIn",
    "description": "Deploys the Log Analytics agent to Linux virtual machines if the agent is not installed.",
    "parameters": {
      "workspaceId": {
        "type": "String",
        "metadata": {
          "displayName": "Workspace ID"
        }
      }
    },
    "policyRule": {
      "if": {
        "field": "type",
        "equals": "Microsoft.Compute/virtualMachines"
      },
      "then": {
        "effect": "deployIfNotExists",
        "details": {
          "type": "Microsoft.Compute/virtualMachines/extensions",
          "existenceCondition": {
            "field": "Microsoft.Compute/virtualMachines/extensions/type",
            "equals": "OmsAgentForLinux"
          },
          "deployment": {
            "properties": {
              "mode": "incremental",
              "template": {
                "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
                "contentVersion": "1.0.0.0",
                "resources": [
                  {
                    "name": "[concat(parameters('vmName'), '/OmsAgent')]",
                    "type": "Microsoft.Compute/virtualMachines/extensions",
                    "location": "[parameters('location')]",
                    "properties": {
                      "publisher": "Microsoft.EnterpriseCloud.Monitoring",
                      "type": "OmsAgentForLinux",
                      "typeHandlerVersion": "1.0",
                      "settings": {
                        "workspaceId": "[parameters('workspaceId')]"
                      }
                    }
                  }
                ]
              }
            }
          }
        }
      }
    }
  }
}

Refer to the exhibit. You are assigned a policy that deploys the Log Analytics agent to Linux VMs. After assigning this policy to a subscription, you notice that existing Linux VMs are not getting the agent deployed, but newly created VMs receive the agent. What is the most likely reason?

Clue words in this question

Noticing these words before you look at the options changes how you read each choice.

  • Clue: "most likely"

    Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.

Question 1hardmultiple choice
Full question →

Exhibit

{
  "properties": {
    "displayName": "Deploy Log Analytics agent for Linux VMs",
    "policyType": "BuiltIn",
    "description": "Deploys the Log Analytics agent to Linux virtual machines if the agent is not installed.",
    "parameters": {
      "workspaceId": {
        "type": "String",
        "metadata": {
          "displayName": "Workspace ID"
        }
      }
    },
    "policyRule": {
      "if": {
        "field": "type",
        "equals": "Microsoft.Compute/virtualMachines"
      },
      "then": {
        "effect": "deployIfNotExists",
        "details": {
          "type": "Microsoft.Compute/virtualMachines/extensions",
          "existenceCondition": {
            "field": "Microsoft.Compute/virtualMachines/extensions/type",
            "equals": "OmsAgentForLinux"
          },
          "deployment": {
            "properties": {
              "mode": "incremental",
              "template": {
                "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
                "contentVersion": "1.0.0.0",
                "resources": [
                  {
                    "name": "[concat(parameters('vmName'), '/OmsAgent')]",
                    "type": "Microsoft.Compute/virtualMachines/extensions",
                    "location": "[parameters('location')]",
                    "properties": {
                      "publisher": "Microsoft.EnterpriseCloud.Monitoring",
                      "type": "OmsAgentForLinux",
                      "typeHandlerVersion": "1.0",
                      "settings": {
                        "workspaceId": "[parameters('workspaceId')]"
                      }
                    }
                  }
                ]
              }
            }
          }
        }
      }
    }
  }
}

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

✓

The policy assignment requires a remediation task to be created for existing non-compliant VMs

Option A is correct because the policy uses 'deployIfNotExists' effect, which requires remediation tasks to be triggered on existing resources; the policy assignment does not automatically remediate existing VMs. Option B is wrong because the policy evaluates all VMs regardless of region. Option C is wrong because the policy does not require a managed identity for deployment; the 'deployIfNotExists' effect uses the system-assigned identity. Option D is wrong because the workspace ID is a required parameter, and if not provided, the assignment would fail.

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.

  • ✓

    The policy assignment requires a remediation task to be created for existing non-compliant VMs

    Why this is correct

    DeployIfNotExists effect only deploys on new resources; existing resources need a remediation task.

    Clue confirmation

    The clue word "most likely" in the question point toward this answer.

    Related concept

    Read the scenario before looking for a memorised answer.

  • ✗

    The policy only applies to VMs in specific regions

    Why it's wrong here

    The policy does not restrict by region.

  • ✗

    The workspace ID parameter was not specified during assignment

    Why it's wrong here

    If the workspace ID were missing, the assignment would fail entirely.

  • ✗

    The policy requires a managed identity to deploy the extension

    Why it's wrong here

    DeployIfNotExists uses the system-assigned identity; it does not require a user-assigned identity.

Common exam traps

Common exam trap: answer the scenario, not the keyword

Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.

Detailed technical explanation

How to think about this question

This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.

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.
  • Use explanations to understand the rule behind the answer.

TExam Day Tips

  • Underline the problem statement mentally.
  • 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 AZ-500 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.

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FAQ

Questions learners often ask

What does this AZ-500 question test?

Secure Azure using Microsoft Defender for Cloud and Microsoft Sentinel — This question tests Secure Azure using Microsoft Defender for Cloud and Microsoft Sentinel — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: The policy assignment requires a remediation task to be created for existing non-compliant VMs — Option A is correct because the policy uses 'deployIfNotExists' effect, which requires remediation tasks to be triggered on existing resources; the policy assignment does not automatically remediate existing VMs. Option B is wrong because the policy evaluates all VMs regardless of region. Option C is wrong because the policy does not require a managed identity for deployment; the 'deployIfNotExists' effect uses the system-assigned identity. Option D is wrong because the workspace ID is a required parameter, and if not provided, the assignment would fail.

What should I do if I get this AZ-500 question wrong?

Identify which AZ-500 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.

Are there clue words in this question I should notice?

Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

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Last reviewed: Jun 21, 2026

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This AZ-500 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-500 exam.