单项选择题
A.Install a TV tuner card that supports high-definition TV （HDTV）.
B.Install an additional TV tuner card.
C.Contact your TV cable or satellite provider to add support for concurrent recording.
D.Remove the existing TV tuner card. Install a new TV tuner card that supports MPEG-2 video hardware or software video decoding.
单项选择题 You have two desktop computers at your home. You establish a remote desktop connection from one computer to the other. The remote session fails to show the desktop background of the remote computer. You need to view the desktop background when you establish a remote session. What should you do？（）
单项选择题 You have a desktop computer and a portable computer. Both the computers are configured to allow remote desktop connections. You connect to the desktop computer from the portable computer. You need to save files from within the remote session to the C： drive of the portable computer. What should you do？（）
单项选择题 You send a remote assistance invitation for help. You need to open a personal document without allowing the help desk to view the document. You also need to ensure that the remote assistance session remains connected. What should you do？ （）