单项选择题 You attempt to upgrade a Microsoft Windows XP computer to Windows Vista. You receive an error message during the upgrade process indicating that the upgrade has failed. You need to view the details of the error message. What should you do?（）

单项选择题 You have a computer that runs Microsoft Windows XP. The computer has a custom application installed. You plan to upgrade the Windows XP computer to Windows Vista. You need to identify whether User Account Control (UAC) will allow the custom application to run without requiring elevated privileges. What should you do?（）

单项选择题 Your computer runs Microsoft Windows 2000 with Service Pack 3. You need to upgrade your computer to Microsoft Windows Vista. You must achieve this goal without reinstalling the applications. What should you do?（）