Your network contains a single Active Directory forest. The forest contains two domains named contoso.com and sales.contoso.com. The domain controllers are configured as shown in the following table.
Server name Domain DNS zones hosted
DC1 contoso.com contoso.com DC2 contoso.com contoso.com
DC3 sales.contoso.com sales.contoso.com DC4
sales.contoso.com sales.contoso.com
All domain controllers run Windows Server 2008 R2. All zones are configured as Active Directory-integrated zones.
You need to ensure that contoso.com records are available on DC3.
Which command should you run（）
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