A company’s network administrator needs to ensure a specific IP address is never assigned by a Windows Server 2012 R2 DHCP server to any device connecting to the network.
Which of the following should the administrator configure on the Windows Server 2012 R2 DHCP server?（）

You work as an administrator at Contoso.com. The Contoso.com network consists of a single domain named Contoso.com.
Contoso.com has a server, named ENSUREPASS-SR15, which has Windows Server 2012 R2 installed. Contoso.com also has a server, named ENSUREPASS-SR16, which has
Windows Server 2008 R2 SP1 installed.
You have been instructed to make sure that ENSUREPASS-SR16 is able to run Windows PowerShell 3.0.
Which of the following actions should you take?（）

You work as an administrator at Contoso.com. The Contoso.com network consists of an Active Directory forest that contains a root domain, named Contoso.com, and two child domains, named us.Contoso.com and uk.Contoso.com. All servers on the Contoso.com network have Windows Server 2012 R2 installed.
The root domain hosts a domain local distribution group, named ENSUREPASSGroup.
You are preparing to issue ENSUREPASSGroup read-only access to a shared folder hosted by the us.Contoso.com domain.
You want to make sure that ENSUREPASSGroup is able to access the shared folder in the us.Contoso.com domain.
Which of the following actions should you take?（）

You work as an administrator at Contoso.com. The Contoso.com network consists of a single domain named Contoso.com. All servers in the Contoso.com domain, including domain controllers, have Windows Server 2012 R2 installed.
Contoso.com has a server, named ENSUREPASS-SR15, which is configured as a file server.
You have received instructions to make sure that a user, named Mia Hamm, has the ability to generate a complete backup of ENSUREPASS-SR15 via Windows Server Backup.
Which of the following actions should you take?（）