单项选择题 You install Windows Server 2008 R2 （Server Core I nstallation） on a server. You install the Hyper-V role and Windows PowerShell 2.0 on the server. When you attempt to run an iscsicli command， the command fails. You need to be able to immediately run the iscsicli command successfully. What should you do？（）

单项选择题 Your companys network includes an Active Directory Domain Services （AD DS） domain. You manage Hyper-V servers by using Microsoft System Center Virtual Machine Manager （VMM） 2008 R2. You install Windows Server 2008 R2 Datacenter （Server Core Installation） on 100 new servers， and you add the servers to the domain. You need to add the Hyper-V role to the 100 new servers. You must accomplish this goal by using the least amount of administrative effort. What should you do？（）

单项选择题 You install Windows Server 2008 R2 Enterprise （Server Core Installation）. You need to add the Hyper-V role to the server. Which command should you run？（）