Your network contains a single Active Directory forest.
The forest contains two domainsnamed contoso.comand sales.contoso.com.
The domain controllersare configured as shown in the following table:

All domain controllersrun Windows Server 2008 R2.
All zonesare configured as Active Directory- integrated zones.
You need to ensure that contoso.com records are available on DC3.
Which command should you run?

A.
dnscmd.exe DC1.contoso.com /ZoneChangeDirectoryPartition contoso.com /domain

B.
dnscmd.exe DC1.contoso.com /ZoneChangeDirectoryPartition contoso.com /forest

C.
dnscmd.exe DC3.contoso.com /ZoneChangeDirectoryPartition contoso.com /domain

D.
dnscmd.exe DC3.contoso.com /ZoneChangeDirectoryPartition contoso.com /forest

Explanation:
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http://technet.microsoft.com/en-us/library/cc772069%28v=ws.10%29.aspx#BKMK_23
Dnscmd
A command-line interface for managing DNS servers. This utility is useful in scripting batch files to help
automate routine DNS management tasks, or to perform simple unattended setup and configuration of new
DNS servers on your network.
dnscmd /zonechangedirectorypartition
Changes the directory partition on which the specified zone resides.
Syntax
dnscmd [<ServerName>] /zonechangedirectorypartition<ZoneName>] {[<NewPartitionName>] |
[<ZoneType>] }
Parameters
<ServerName>
Specifies the DNS server to manage, representedby IP address, FQDN, or host name. If this parameter is
omitted, the local server is used.
<ZoneName>
The FQDN of the current directory partition on which the zone resides.
<NewPartitionName>
The FQDN of the directory partition that the zone will be moved to.
<ZoneType>
Specifies the type of directory partition that the zone will be moved to.
/domain
Moves the zone to the built-in domain directory partition.
/forest
Moves the zone to the built-in forest directory partition.
/legacy
Moves the zone to the directory partition that is created for pre–Active Directory domain controllers. These
directory partitions are not necessary for native mode.