Which tool should you use before you start the DFS Replication service on DC10?

Your company deploys a new Active Directory forest named contoso.com. The first domain
controller in the forest runs Windows Server 2012 R2. The forest contains a domain
controller named DC10.
On DC10, the disk that contains the SYSVOL folder fails.
You replace the failed disk. You stop the Distributed File System (DFS) Replication service.
You restore the SYSVOL folder.
You need to perform a non-authoritative synchronization of SYSVOL on DC10.
Which tool should you use before you start the DFS Replication service on DC10?

A.
Dfsgui.msc

B.
Dfsmgmt.msc

C.
Adsiedit.msc

D.
Ldp

Explanation:
How to perform a non-authoritative synchronization of DFSR-replicated SYSVOL (like “D2”
for FRS)
1. In the ADSIEDIT. MSC tool modify the following distinguished name (DN) value and
attribute on each of the domain controllers that you want to make non-authoritative:
CN=SYSVOL Subscription,CN=Domain System Volume,CN=DFSR-LocalSettings,CN=<the
server name>,OU=Domain Controllers,DC=<domain>
msDFSR-Enabled=FALSE
2. Force Active Directory replication throughout the domain.
3. Run the following command from an elevated command prompt on the same servers
that you set as non-authoritative:
DFSRDIAG POLLAD
4. You will see Event ID 4114 in the DFSR event log indicating SYSVOL is no longer
being replicated.
5. On the same DN from Step 1, set:
msDFSR-Enabled=TRUE
6. Force Active Directory replication throughout the domain.
7. Run the following command from an elevated command prompt on the same servers
that you set as non-authoritative:
DFSRDIAG POLLAD
8. You will see Event ID 4614 and 4604 in the DFSR event log indicating SYSVOL has
been initialized. That domain controller has now done a “D2” of SYSVOL.
Note: Active Directory Service Interfaces Editor (ADSI Edit) is a Lightweight Directory
Access Protocol (LDAP) editor that you can use to manage objects and attributes in Active
Directory. ADSI Edit (adsiedit. msc) provides a view of every object and attribute in an Active
Directory forest. You can use ADSI Edit to query, view, and edit attributes that are not

exposed through other Active Directory Microsoft Management Console (MMC) snap- ins:
Active Directory Users and Computers, Active Directory Sites and Services, Active Directory
Domains and Trusts, and Active Directory Schema.