Which tool should you run?

Your network contains an Active Directory domain named contoso.com. All domain
controllers run a Server Core installation of Windows Server 2008 R2.
You need to identify which domain controller holds the PDC emulator role.
Which tool should you run?

A.
Get-AdOptionalFeature
B.netdom.exe
C.Search-AdAccount
D.dsrm.exe

Explanation:
The FSMO role holders can be easily found by use of the Netdom command.
On any domain controller, click Start, click Run, type CMD in the Open box, and then click
OK.
In the Command Prompt window, type netdom query /domain:<domain> fsmo (where
<domain> is the name of YOUR domain).
Note:
The five FSMO roles [in Windows 2003] are:
Schema master – Forest-wide and one per forest.
Domain naming master – Forest-wide and one per forest.
RID master – Domain-specific and one for each domain.
PDC – PDC Emulator is domain-specific and one for each domain.
Infrastructure master – Domain-specific and one for each domain.