You use a desktop computer that has Windows 7 Ultimate SP1. The relevant portions of the
computer configuration are shown in the following exhibits:
• The Disk Management console (Click the Exhibit button.)
• The System Properties window (Click the Exhibit button.)
• The System protection for Local Disk C window (Click the Exhibit button.)
You encrypt several files on an external USB hard disk drive by using the Encrypting File System (EFS).
You need to ensure that you can access the files from another computer.
What should you do?
A.
Delete restore points.
B.
Create a restore point.
C.
Perform a system restore.
D.
Search for the file in the Recycle Bin.
E.
Increase disk space used for system protection.
F.
Copy the file from a previous version of a folder.
G.
Set restore settings to Only restore previous versions of files.
H.
Run the cipher /x command from the elevated command prompt,
I.
Run the vssadmin list volumes command from the elevated command prompt.
J.
Run the vssadmin list shadows command from the elevated command prompt,
K.
Run the compact /U <file_name> command from the elevated command prompt.
Explanation:
* cipher /x[:efsfile] [<FileName>]
Backs up the EFS certificate and keys to the specified file name. If used with :efsfile, /x backs up the
user’s certificate(s) that were used to encrypt the file. Otherwise, the user’s current EFS certificate
and keys are backed up.
* Back Up Your EFS Key
The first time that you use EFS to encrypt something, your system generates a random 256-bit
number; that’s the key that EFS uses whenever you encrypt something. To back up your EFS key,
simply use the Cipher /x command. Cipher will reply with a message asking if you truly want to back
up your EFS key—sadly, I haven’t found a way to suppress this message. Press OK. The tool will then
prompt you for the name of the file in which to store the backup. Don’t specify a file extension;
Cipher insists on the .pfx extension. For example, if you picked a file named mybackup, you now
have a small file called mybackup.pfx. Next, the tool will prompt you to create a password with
which to protect that file.
Once you’ve got that file created, copy it from your computer’s hard disk to some offline location
(e.g., a USB stick, a CD-ROM) and make a note of the password you’ve chosen. Now, in the event of
unfortunate circumstances— for example, you lose your profile, you forget your password and a
systems administrator has to reset it, the system’s OS fails and you need to recover files directly
from the nowdead system’s hard disk—you can simply restore your EFS key by double-clicking the
.pfx file and running the resulting wizard. As soon as the wizard is finished, you’ll be able to get to
your files again.