Your network contains an Active Directory forest named contoso.com. The forest contains a single domain. The domain contains two domain controllers named DC1 and DC2 that run Windows Server 2012 R2.
The domain contains a user named User1 and a global security group named Group1.
You need to add a new domain controller to the domain.
You install Windows Server 2012 R2 on a new server named DC3.
Which cmdlet should you run next?（）

You have a server named Server1 that runs Windows Server 2012 R2.
You need to create a script that will create and mount a virtual hard disk.
Which tool should you use?（）