DRAG DROP
Your network contains an Active Directory domain named contoso.com. The domain
contains two domain controllers named DC1 and DC2 that run Windows Server 2008 R2.
You plan to replace the domain controllers with new servers that run Windows Server 2012.
The new servers will be named DC3 and DC4.

You need to recommend a strategy to replace DC1 and DC2 with DC3 and DC4. The
solution must minimize the amount of disruption to the users.
Which three actions should you recommend?
To answer, move the appropriate three actions from the list of actions to the answer area
and arrange them in the correct order.

Answer: See the explanation

Explanation:
Install the Active Directory Domain Services.
Run the AD Services Config Wizard.
dcpromo on DC1 and DC2.