Your network contains an Active Directory domain named contoso.com. All domain controllers run Windows Server 2008 R2 Service Pack 1 (SP1). One of the domain controllers is named DC1.
The network contains a member server named Server1 that runs Windows Server 2012 R2.
You need to promote Server1 to a domain controller by using install from media (IFM).
What should you do first?（）

Your network contains an Active Directory domain named contoso.com. All servers run Windows Server 2012 R2. The domain contains a member server named Server1. Server1 has the File Server server role installed.
On Server1, you create a share named Documents. The Documents share will contain the files and folders of all users.
You need to ensure that when the users connect to Documents, they only see the files to which they have access.
What should you do?（）