Your network contains an Active Directory domain named contoso.com. Domain controllers run either Windows
Server 2003, Windows Server 2008 R2, or Windows Server 2012 R2.
A support technician accidentally deletes a user account named User1.
You need to use tombstone reanimation to restore the User1 account.
Which tool should you use?

A.
Active Directory Administrative Center

B.
Ntdsutil

C.
Ldp

D.
Esentutl

Explanation:
Use Ldp.exe to restore a single, deleted Active Directory object
This feature takes advantage of the fact that Active Directory keeps deleted objects in the database for a period
of time before physically removing them.
use Ldp.exe to restore a single, deleted Active Directory object
The LPD.exe tool, included with Windows Server 2012, allows users to perform operations against any LDAPcompatible directory, including Active Directory. LDP is used to view objects stored in Active Directory along
with their metadata, such as security descriptors and replication metadata.

http://www.petri.co.il/manually-undeleting-objects-windows-active-directory-ad.htm
http://technet.microsoft.com/en-us/magazine/2007.09.tombstones.aspx
http://technet.microsoft.com/nl-nl/library/dd379509(v=ws.10).aspx#BKMK_2
http://technet.microsoft.com/en-us/library/hh875546.aspx
http://technet.microsoft.com/en-us/library/dd560651(v=ws.10).aspx