Your network contains an Active Directory domain. The domain contains three domain  controllers.
One of the domain controllers fails. 
Seven days later， the help desk reports that it can no longer create user accounts. You need to  ensure that the help desk can create new user accounts.    
Which operations master role should you seize（）

单项选择题Your network contains an Active Directory forest. The forest contains two domains named  contoso.com and woodgrovebank.com.     You have a custom attribute named Attibute1 in Active Directory. Attribute1 is associated to User  objects.   You need to ensure that Attribute1 is replicated to the global catalog.     What should you do（）

A.In Active Directory Sites and Services， configure the NTDS Settings.
B.In Active Directory Sites and Services， configure the universal group membership caching.  
C.From the Active Directory Schema snap-in， modify the properties of the User class schema object.
D.From the Active Directory Schema snap-in， modify the properties of the Attibute1 classschema attribute.

单项选择题YournetworkcontainsanActiveDirectorydomain.ThefunctionallevelofthedomainisWindowsServer2003.ThedomaincontainsfivedomaincontrollersthatrunWindowsServer2008andfivedomaincontrollersthatrunWindowsServer2008R2. YouneedtoensurethatSYSVOLisreplicatedbyusingDistributedFileSystemReplication（DFSR）. Whatshouldyoudofirst（）

A.Run dfsrdiag.exe Pollad.
B.Run dfsrmig.exe /SetGlobalState 0.
C.Upgrade all domain controllers to Windows Server 2008 R2.
D.Raise the functional level of the domain to Windows Server 2008.

单项选择题Your network contains a single Active Directory domain that has two sites named Site1 and Site2.  Site1 has two domain controllers named DC1 and DC2. Site2 has two domain controllers named  DC3 and DC4.  DC3 fails.   You discover that replication no longer occurs between the sites. You verify the connectivity  between DC4 and the domain controllers in Site1.  On DC4， you run repadmin.exe  kcc.     Replication between the sites continues to fail.   You need to ensure that Active Directory data replicates between the sites.     What should you do（）

A.From Active Directory Sites and Services， modify the properties of DC3.
B.From Active Directory Sites and Services， modify the NTDS Site Settings of Site2.
C.From Active Directory Users and Computers， modify the location settings of DC4.
D.From Active Directory Users and Computers， modify the delegation settings of DC4.

单项选择题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（）

A.On DC3， set the AutoSiteCoverage value to 0.
B.On DC3， set the AutoSiteCoverage value to 1.
C.On DC1 and DC2， set the AutoSiteCoverage value to 0.
D.On DC1 and DC2， set the AutoSiteCoverage value to 1.

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.