单项选择题
A.For all files, deny the Take ownership permission to the Everyone group.
B.From the Local Security Policy, modify the Encrypting File System (EFS) properties.
C.From the Certificates snap-in, delete the recovery agent certificate.
D.From the Certificates snap-in, delete all trusted root certification authority (CA) certificates.
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?（）
单项选择题 You have a computer that runs Windows XP Professional. Two users named User1 and User2 share the computer. User1 and User2 encrypt files on the computer. User1 encrypts a file named file1. doc. You need ensure that both User1 and User2 can view the contents of file1. doc. What should you instruct User1 to do?（）
单项选择题 You have two computers named Computer1 and Computer2. The computers run Windows XP Professional and are joined to an Active Directory domain. Computer1 contains the recovery agent certificate for the domain. A domain user named User1 encrypts files on Computer2 in a folder named C:\User1. The user leaves the company and the administrator deletes User1’s account. You need to decrypt the files encrypted by User1. What should you do?（）