单项选择题 You have a computer that runs Windows XP Professional. Five users share the computer. A user named User1 is a member of the Power Users group and the Administrators group. User1 has encrypted files on the computer. User1 takes an extended leave of absence. You need to ensure that users cannot access the computer as User1. You must be able to provide User1 access to the files upon User1’s return. What should you do?（）

单项选择题 You have a computer named Computer1 that runs Windows XP Professional. Computer1 is a member of a workgroup. You need to prevent all users from encrypting files on Computer1. What should you do?（）

单项选择题 A user named User1 has a computer named Computer1 that runs Windows XP Professional. User1 has a folder that contains encrypted files. You purchase a new computer named Computer2. You back up User1s files and restore them to Computer2. You need to ensure that User1 can access the encrypted files on Computer2. What should you do?（）