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70-687 Configuring Windows 8.1 – sample exam – Q85

You administer Windows 8.1 Enterprise computers in your company’s Active Directory Domain Services (AD DS) domain.
Your company uses several peripheral devices. The drivers for these devices are not available on Windows Update.
You need to ensure that the drivers install when users connect these devices to their computers. What should you do?

A. For the Group Policy setting Prioritize all digitally signed drivers equally during the driver ranking and selection process, select Disabled.
B. From Device Manager, find the detected scanner device and select Update Driver.
C. Add the following registry key to the computers: HKEY_LOCAL_MACHINE/Software/Microsoft/Windows/Current Version/DevicePath. Add °/osystemroot %\inf and the UNC path to the drivers share.
D. For the Group Policy setting Configure driver search locations, select Enabled. Make the drivers available on the UNC path to the driver’s share.


Correct Answer: C

http://technet.microsoft.com/en-us/library/cc753716.aspx
Configure Windows to Search Additional Folders for Device Drivers

To configure Windows to Search Additional Folders for Device Drivers Start Registry Editor. Click Start, and in the Start Search box type regedit.
1.
If the User Account Control dialog box appears, confirm that the action it displays is what you want, 2.
and then click Yes.
Navigate to the following registry key:
3.
HKEY_LOCAL_MACHINE/Software/Microsoft/Windows/Current Version In the details pane, double-click DevicePath.
4.
Add additional folder paths to the setting, separating each folder path with a semi-colon. Ensure that 5.
%systemroot%\inf is one of the folders included in the value.

Caution:
Do not remove %systemroot%\inf from the DevicePath registry entry. Removal of that folder can break device driver installation.

Further Information:
http://msdn.microsoft.com/en-us/library/windows/hardware/ff553973%28v=vs.85%29.aspx Where Windows Searches for Drivers

After a device is attached, Windows attempts to locate a matching driver package from which it can install a driver for the device. Windows searches for driver packages from various locations and performs this search in two phases, as described in the following table.

85

Starting with Windows 7, Windows automatically downloads matching driver packages from Windows Up- date without prompting the user for permission. If a matching driver package is found, Windows down- loads the package and stages it to the driver store.

If a matching driver package cannot be downloaded, Windows searches for matching driver packages in the driver store. This includes in-box drivers, installed drivers other than in-box drivers, and preinstalled drivers.

Windows also searches for driver packages that were preloaded in the locations that are specified by the DevicePath registry value. This value is under the following subkey of the registry.

HKEY_LOCAL_MACHINE
Software
Microsoft
Windows
CurrentVersion

By default, the DevicePath value specifies the %SystemRoot%\INF directory.

If a matching driver package is found either on Windows Update or in a location that is specified by the DevicePath value, Windows first stages the driver package to the driver store before the driver is in- stalled. In this way, Windows always installs drivers from the driver store.

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