单项选择题 Your network contains an Active Directory forest. The forest contains one domain and three sites.   Each site contains two domain controllers. All domain controllers are DNS servers.  You create a new Active Directory-integrated zone.   You need to ensure that the new zone is replicated to the domain controllers in only one of the sites.   What should you do first（）

单项选择题 Your network contains an Active Directory domain named contoso.com. The contoso.com DNS zoneis stored in Active Directory. All domain controllers run Windows Server 2008 R2.   You need to identify if all of the DNS records used for Active Directory replication are correctly registered.   What should you do（）

单项选择题 Your network contains an Active Directory domain named contoso.com.You run nslookup.exe as shown in the following Command Prompt window. You need to ensure that you can use Nslookup to list all of the service location （SRV） resource records for  contoso.com. What should you modify（）