单项选择题 Your company has an Active Directory Domain Services (AD DS) domain. All client computers run Windows 7. You have a Remote Desktop Session Host (RD Session Host) server. You need to ensure that each user is authenticated to the RD Session Host server before a session is created. What should you do?（）

单项选择题 Your company has an Active Directory Domain Services (AD DS) domain. All servers run Windows Server 2008 R2. You have a Remote Desktop Session Host (RD Session Host) server and a Remote Desktop Web Access (RD Web Access) server. You enable several RemoteApp applications on the RD Session Host server. You need to configure access to RemoteApp applications so that RD Web Access users see only applications to which they have been granted access. What should you do?（）

多项选择题 Your company runs Remote Desktop Services. You have a Remote Desktop Session Host (RD Session Host) server. You need to select a digital certificate for signing Remote Desktop Protocol (.rdp) files. Which two certificate types can you use to achieve this goal?（）