单项选择题
A.Run Cipher.exe /x.
B.Run Ntbackup.exe /p.
C.From Backup and Restore，click Back up now.
D.From Backup and Restore，click Create a system image.
单项选择题 You have a computer that runs Windows 7. You add a new hard disk drive to the computer and create anew NTFS partition. You need to ensure that you can use the Previous Versions feature on the new drive. What should you do?（）
单项选择题 You have a computer that runs Windows 7. The computer has System Protection enabled. You need toretain only the last System Protection snapshot of the computer. All other snapshots must be deleted. Whatshould you do?（）
单项选择题 YouhaveacomputerthatrunsWindows7.Youmanuallycreateasystemrestorepoint.YouneedtorestoreacopyofafilestoredondriveCfromtwodaysago.Youmustachievethisgoalintheminimumamountoftime.Whatshouldyoudo?（）