Chapter 8, Managing Azure VMs and VM Backups

1. 4—You cannot move the VM because the subscriptions are in different Azure AD tenants. One of the prerequisites for moving VMs is that the source and the destination subscriptions remain in the same Azure AD tenant.
2. 1—You should use the Set-AzVM cmdlet, followed by the -Redeploy method.
3. 3—The Add-AzVMDataDisk cmdlet adds a data disk to a virtual machine. You can add a data disk when you create a virtual machine, or you can add a data disk to an existing virtual machine.