AZ-140 Question #96: Real Exam Question with Answer & Explanation

Question

The scaling tool offers a low-cost automation solution for the customers who are looking towards optimizing their session host Virtual Machine costs. It uses several tools or apps like PowerShell runbook, Azure Automation account, the Azure Logic App, and a webhook to work. What happens when the scaling tool runs?

Options

• AAzure Automation runbook calls a webhook to start the Azure Logic App. The App then creates a
• BA webhook is called by Azure Logic App to start/initiate the Azure Automation runbook. Then, the
• CAzure Automation runbook calls an Azure Logic App to start the webhook. The webhook then
• DA webhook calls an Azure Automation runbook to start the Azure Logic App. The App then

Explanation

The Azure Virtual Desktop scaling tool operates by an Azure Logic App initiating a webhook, which subsequently triggers an Azure Automation runbook to perform VM scaling actions.

Common mistakes.

• A. This sequence is incorrect; the Logic App triggers the runbook via a webhook, not the other way around.
• C. This sequence is incorrect; the runbook is initiated by the Logic App via a webhook, and the Logic App does not primarily start the webhook itself but rather sends a request to it.
• D. This sequence is incorrect; the Logic App calls the webhook, which in turn triggers the Azure Automation runbook, rather than a webhook directly calling the runbook to start the Logic App.

Concept tested. AVD scaling tool workflow and components

Reference. https://learn.microsoft.com/en-us/azure/virtual-desktop/autoscale-scaling-plan

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