[多选]

Your company has an Active Directory Domain Services (AD DS) domain. You are installing the RD Session Host (RD Session Host) role service in Server Manager on a server that runs Windows Server 2008 R2.
The Audio and video playback check box on the Configure Client Experience page is not available.
You need to ensure that you can enable audio and video playback for users connecting to the RD Session Host server.
Which two actions should you perform? （）

分散自律调度集中系统分散自律控制时，只有控制指令不同来源，没有中心与车站控制权的转换。 You have a computer that runs Windows XP Professional. You download new video card driver from the Internet, and then install the driver. You restart the computer. You discover that the newly loaded video driver is named VgaSave.  You need to restore the previous version of the video card driver.What should you do?（）  From the Device Manger, scan for hardware changes. 。 From the Device Manager, access the video card properties, and then select Roll Back. 。 From the Device Manager, access the VgaSave properties, and then run the Hardware Troubleshooter. 。 Restart the computer. From the Advanced Startup Options menu, select Last Known Good Configuration.&e。 国家助学贷款面向在校的全日制高等学校经济确实困难的（）。 高职学生。 本科生。 博士生。 在职研究生。 第二学士学位学生。 熔合比 Which of the following technologies can be used in distance vector routing protocols to prevent routing loops?（） Spanning Tree Protocol。 Shortest path first tree。 Link-state advertisements (LSA)。 Hold-down timers。 Split horizon。 VRRP。

Your company has an Active Directory Domain Services (AD DS) domain. You are installing the RD Session Host (RD Session Host) role service in Server Manager on a server that runs Windows Server 2008 R2.
The Audio and video playback check box on the Configure Client Experience page is not available.
You need to ensure that you can enable audio and video playback for users connecting to the RD Session Host server.
Which two actions should you perform? （）