Your company is planning on hosting resources using Azure services. You have to decide on the right service to use for the desired requirement. Which of the following would you use for the following requirement? 
“Provide the ability to host a private network in Azure”

Answer options:

A.Azure App Service
B.Azure Kubernetes
C.Windows Virtual Desktop
D.Azure Virtual Network

Answer : D 
The Azure virtual network gives you the ability to host a virtual network in Azure. Here you can host virtual machines in the virtual network.
Option A is incorrect because this is used for hosting web applications
Option B is incorrect because this is used for orchestrating container-based applications
Option C is incorrect because this is used for desktop and application virtualization
For more information on Azure virtual networks, please visit the below URL 

https://docs.microsoft.com/en-us/azure/virtual-network/virtual-networks-overview