AZ-104 Certification Practice Question #187

Question

You plan to deploy several Azure virtual machines that will run Windows Server 2019 in a virtual machine scale set by using an Azure Resource Manager template.
You need to ensure that NGINX is available on all the virtual machines after they are deployed.
What should you use?

Accepted Answer

To ensure that a specific application or configuration (such as NGINX or IIS) is automatically installed and configured on virtual machines in a virtual machine scale set (VMSS) upon deployment, you should use an Azure Virtual Machine Extension. In an ARM template, you can declare VM extensions in the `extensionProfile` property of the scale set. Out of the given choices, the Desired State Configuration (DSC) extension is a standard, built-in post-deployment configuration extension used to configure host operating systems (like installing web servers). Cmdlets (New-AzConfigurationAssignment) are run manually rather than declared inside template deployments, and other options (AD Application Proxy, Application Insights) are completely unrelated to post-deployment host configuration.

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