You have a server named Data1 that runs a Server Core Installation of Windows Server 2012 R2
Standard.
You need to configure Data1 to run a Server Core Installation of Windows Server 2012 R2
Datacenter. You want to achieve this goal by using the minimum amount of administrative effort.
What should you perform?

A.
An online servicing by using Dism

B.
An offline servicing by using Dism

C.
An upgrade installation of Windows Server 2012 R2

D.
A clean installation of Windows Server 2012 R2

Explanation:
A)
Not least effort
B)
Not least effort
C)
dism /online /set-edition
D)
offline would be less ideal and more workex: DISM /online /Set-Edition:ServerEnterprise /
ProductKey:489J6-VHDMP-X63PK-3K798-CPX3YWindows Server 2008 R2/2012 contains a commandline utility called DISM (Deployment Image Servicing andManagement tool). This tool has many
features, but one of those features is the ability to upgrade the edition ofWindows in use. Note that
this process is for upgrades only and is irreversible. You cannot set a Windowsimage to a lower
edition. The lowest edition will not appear when you run the /Get-TargetEditions option. If the
server is running an evaluation version of Windows Server 2012
R2 Standard or Windows Server 2012 R2Datacenter, you can convert it to a retail version as follows:
If the server is a domain controller, you cannot convert it to a retail version. In this case, install an
additionaldomain controller on a server that runs a retail version and remove AD DS from the
domain controller thatruns on the evaluation version. From an elevated command prompt,
determine the current edition name with the command DISM /online /Get-CurrentEdition. Make
note of the edition ID, an abbreviated form of the edition name. Then run DISM /online /SetEdition:<edition ID> /ProductKey:XXXXXXXXXX-XXXXX-XXXXXXXXXX
/AcceptEula,providing the edition ID and a retail product key.
The server will restart twice.
http://technet.microsoft.com/en-us/library/jj574204.aspx
http://technet.microsoft.com/en-us/library/dd744380%28v=ws.10%29.aspx
http://blogs.technet.com/b/server_core/archive/2009/10/14/upgrading- windows-server2008-r2-
without-media.aspx
http://communities.vmware.com/people/vmroyale/blog/2012/05/30/howto-upgradingwindowsedition-with-dism