What should you do first?

You have an Azure subscription that contains a virtual network named VNet1. VNet 1 has two subnets named Subnet1 and Subnet2. VNet1 is in the West Europe Azure region.

The subscription contains the virtual machines in the following table.

You need to deploy an application gateway named AppGW1 to VNet1.

What should you do first?
A . Add a service endpoint.
B . Add a virtual network.
C . Move VM3 to Subnet1.
D . Stop VM1 and VM2.

Answer: D

Explanation:

If you have an existing virtual network, either select an existing empty subnet or create a new subnet in your existing virtual network solely for use by the application gateway.

Verify that you have a working virtual network with a valid subnet. Make sure that no virtual machines or cloud deployments are using the subnet. The application gateway must be by itself in a virtual network subnet.

References:

https://social.msdn.microsoft.com/Forums/azure/en-US/b09367f9-5d01-4cda-9127- b7a506a0a151/cant-create-application-gateway?forum=WAVirtualMachinesVirtualNetwork https://docs.microsoft.com/en-us/azure/application-gateway/application-gateway-create-gateway