单项选择题 You have a computer that runs Windows XP. The computer has one partition. You install Windows 7 on thecomputer. You need to migrate a user profile from the Windows XP installation to Windows 7 installation. What should you do first?（）

单项选择题 You have a computer that runs Windows Vista. The computer contains a custom application. You need toexport the user state and the settings of the custom application.  What should you do?（）

单项选择题 You have a computer named Computer1 that runs Windows Vista and a computer named Computer2 thatruns Windows 7. You plan to migrate all profiles and user files from Computer1 to Computer2. You need toidentify how much space is required to complete the migration.  What should you do?（）