Your company recently deployed a new Active Directory forest named contoso.com. The first domain controller
in the forest runs Windows Server 2012 R2.
You need to identify the time-to-live (TTL) value for domain referrals to the NETLOGON and SYSVOL shared
folders.
Which tool should you use?

A.
Ultrasound

B.
Replmon

C.
Dfsdiag

D.
Frsutil

Explanation:
http://blogs.technet.com/b/josebda/archive/2009/07/15/five-ways-to-check-your-dfs-namespaces-dfs-nconfiguration-with-the-dfsdiag-exe-tool.aspx