单项选择题
A.Extend the Active Directory schema.
B.Upgrade all domain controllers to Windows Server 2008 R2.
C.Upgrade all domain controllers to Windows Server 2003 SP2.
D.Upgrade the domain controller that has the role of operations master to Windows Server 2008 R2.
单项选择题 All client computers in your network run Windows 7 with default firewall settings. You have a server-based application that requires an agent to be installed on all client computers. You need to use Group Policy to allow the application to initiate installation of the agent on all client computers. What should you do？（）
单项选择题 All client computers in your network run Windows 7 Enterprise. You need to prevent all standard user accounts from running programs that are signed by a specific publisher. What should you do？（）
单项选择题 Your network has a single domain with 1，000 client computers that run Windows 7. You use Microsoft System Center Configuration Manager 2007 to distribute and install software applications. All users have standard user accounts. You plan to use Group Policy to ensure that application installation functions properly. You need to design the User Account Control （UAC） policy. What should you do？（）