Your company has a main office and 10 branch offices. Each branch office has an Active  
Directory site that contains one domain controller. Only domain controllers in the main office are  configured as Global Catalog servers.    
You need to deactivate the Universal Group Membership Caching option on the domain  controllers in the branch offices.  
At which level should you deactivate the Universal Group Membership Caching option（）

Your company has a branch office that is configured as a separate Active Directory site and has  an Active Directory domain controller.    
The Active Directory site requires a local Global Catalog server to support a new application.    
You need to configure the domain controller as a Global Catalog server.    
Which tool should you use（）

Your network consists of a single Active Directory domain. All domain controllers run Windows  Server 2003.    
You upgrade all domain controllers to Windows Server 2008 R2.  
You need to ensure that the Sysvol share replicates by using DFS Replication （DFS-R）.    
What should you do（）

You have an existing Active Directory site named Site1. You create a new Active Directory site  and name it Site2.    
You need to configure Active Directory replication between Site1 and Site2. You install a new  domain controller. You create the site link between Site1 and Site2.    
What should you do next（）