nerdexam
Microsoft

AZ-400 · Question #270

You have an Azure DevOps organization named Contoso and an Azure subscription. The subscription contains an Azure virtual machine scale set named VMSS1 and an Azure Standard Load Balancer named LB1. L

The correct answer is D. the Application Health extension. Monitoring your application health is an important signal for managing and upgrading your Azure virtual machine scale sets provide support for rolling upgrades including automatic OS- image upgrades, which rely on health monitoring of the individual instances to upgrade your depl

Submitted by deeparc· Mar 6, 2026Implement an instrumentation strategy

Question

You have an Azure DevOps organization named Contoso and an Azure subscription. The subscription contains an Azure virtual machine scale set named VMSS1 and an Azure Standard Load Balancer named LB1. LB1 distributes incoming requests across VMSS1 instances. You use Azure DevOps to build a web app named App1 and deploy App1 to VMSS1. App1 is accessible via HTTPS only and configured to require mutual authentication by using a client certificate. You need to recommend a solution for implementing a health check of App1. The solution must meet the following requirements: - Identify whether individual instances of VMSS1 are eligible for an upgrade operation. - Minimize administrative effort. What should you include in the recommendation?

Options

  • Aan Azure Load Balancer health probe
  • BAzure Monitor autoscale
  • Cthe Custom Script Extension
  • Dthe Application Health extension

How the community answered

(31 responses)
  • A
    16% (5)
  • B
    10% (3)
  • C
    3% (1)
  • D
    71% (22)

Explanation

Monitoring your application health is an important signal for managing and upgrading your Azure virtual machine scale sets provide support for rolling upgrades including automatic OS- image upgrades, which rely on health monitoring of the individual instances to upgrade your deployment. You can also use health extension to monitor the application health of each instance in your scale set and perform instance repairs using automatic instance repairs. https://docs.microsoft.com/en-us/azure/virtual-machine-scale-sets/virtual-machine-scale-sets- health-extension

Topics

#Application Health extension#VMSS health check#mutual TLS#load balancer

Community Discussion

No community discussion yet for this question.

Sign up to join the discussion
Full AZ-400 Practice