Your network contains an Active Directory domain. The domain is configured as shown in the  following table：  
Active Directory site  Domain controllers  Main  DC1 and DC2  Branch1  DC3  Branch2  None    
Users in Branch2 sometimes authenticate to a domain controller in Branch1.  
You need to ensure that users in Branch2 only authenticate to the domain controllers in Main.    
What should you do（）

单项选择题Your company has a main office and a branch office.   You discover that when you disable IPv4 on a computer in the branch office， the computer  authenticates by using a domain controller in the main office. You need to ensure that IPv6-only  computers authenticate to domain controllers in the same site.     What should you do（）

A.Configure the NTDS Site Settings object.
B.Create Active Directory subnet objects.
C.Create Active Directory Domain Services connection objects.
D.Install an Intra-Site Automatic Tunnel Addressing Protocol （ISATAP） router.

单项选择题You need to ensure that domain controllers only replicate between domain controllers in adjacent  sites.     What should you configure from Active Directory Sites and Services（）

A.From the IP properties， select Ignore all schedules.
B.From the IP properties， select Disable site link bridging.
C.From the NTDS Settings object， manually configure the Active Directory Domain Services connection objects.
D.From the properties of the NTDS Site Settings object， configure the Inter-Site Topology Generator for each site.

单项选择题Your network contains an Active Directory forest. The forest contains multiple sites.     You need to enable universal group membership caching for a site.  What should you do（）

A.From Active Directory Sites and Services， modify the NTDS Settings.
B.From Active Directory Sites and Services， modify the NTDS Site Settings.
C.From Active Directory Users and Computers， modify the properties of all universal groups used in the site.
D.From Active Directory Users and Computers， modify the computer objects for the domain controllers in the site.

单项选择题Your company has a main office and 50 branch offices. Each office contains multiple subnets.     You need to automate the creation of Active Directory subnet objects.     What should you use（）

A.the Dsadd tool
B.the Netsh tool
C.the New-ADObject cmdlet
D.the New-Object cmdlet

单项选择题Your company has a main office and a branch office. The main office contains two domain  controllers.     You create an Active Directory site named BranchOfficeSite. You deploy a domain controller in  the branch office， and then add the domain controller to the BranchOfficeSite site.  You discover that users in the branch office are randomly authenticated by either the domain  controller in the branch office or the domain controllers in the main office.   You need to ensure that the users in the branch office always attempt to authenticate to the  domain controller in the branch office first.     What should you do（）

A.Create organizational units （OUs）.
B.Create Active Directory subnet objects.
C.Modify the slow link detection threshold.
D.Modify the Location attribute of the computer objects.