Your network contains an Active Directory forest named adatum.com. The forest contains a single
domain. The domain contains four servers. The servers are configured as shown in the following
table.
You need to update the schema to support a domain controller that will run Windows Server 2012
R2.
On which server should you run adprep.exe?

A.
Server1
B.
DC3
C.
DC2
D.
DC1
Explanation:
We must use the Windows Server 2008 R2 Server.
Upgrade Domain Controllers to Windows Server 2012 R2 and Windows Server 2012
You can use adprep.exe on domain controllers that run 64-bit versions of Windows Server 2008 or
Windows Server 2008 R2 to upgrade to Windows Server 2012. You cannot upgrade domain
controllers that run Windows Server 2003 or 32-bit versions of Windows Server 2008. To replace
them, install domain controllers that run a later version of Windows Server in the domain, and then
remove the domain controllers that Windows Server 2003.Upgrade Domain Controllers to Windows Server 2012 R2 and Windows Server 2012, Supported inplace upgrade paths.
http://technet.microsoft.com/en-us/library/hh994618.aspx#BKMK_UpgradePaths
DC3 because adprep.exe is a 64bit and can only run on Windows2008 R2
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Had a very similar question in the exam, but Server1 was the only 2008 server
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so the answers was different
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On my test server 1 was the 2008 R2.
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