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Encoding Code 3 of 9 in C#.NET Managing Hardware Devices and Drivers

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Managing Hardware Devices and Drivers
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Resource conflicts are resolved by first clearing the Use Automatic Settings check box and then configuring the required resource settings. Last Known Good Configuration is useful only if device failure occurs before the system has been restarted and logged on to successfully. Safe mode loads a minimal set of drivers and services so that configuration changes can be made to problematic devices.
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Roll Back Driver vs. Last Known Good Configuration A driver rollback requires logon, whereas a logon invalidates Last Known Good Configuration. Roll Back Driver and Last Known Good Configuration both revert to a previous configuration of a device driver. Last Known Good Configuration reverts to the previous configuration of all devices and services. Safe mode vs. Last Known Good Configuration Logging on in Safe mode loads a minimal set of drivers but will not reset any drivers, whereas the Last Known Good Configuration will revert to the previous driver configuration. uninstalling vs. disabling a device Uninstalling a device will remove the device from all configurations. Depending on the type of device, a PnP detection might occur on the next system restart or Scan for Hardware changes. Configuration of the device on the next system restart or Scan for Hardware changes will treat the device as new. Disabling a device maintains the driver as configured the next time that the device is enabled, but makes the device unavailable for use until enabled.
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Lesson 1 Review
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1. You want to make certain that no unsigned drivers are used on the desktop computers in your environment. How will you manage Driver Signing settings to achieve this goal
In a Group Policy Object (GPO) for the desktop computers, enable the policy setting Devices: Unsigned Driver Installation Behavior and set the behavior to Do Not Allow Installation.
2. A user wants to install a USB printer connected to her computer. The drivers for the printer are included with Windows Server 2003. Can she install the printer
Yes. A USB printer with drivers included with Windows Server 2003 is a PnP printer and the driver is signed, so installation should be possible with no intervention from the user.
3. You want to export a list of unsigned drivers on a computer. What tool can you use
Sigverif.exe allows you to export a list of unsigned drivers to a comma-separated value (CSV) file.
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Lesson 2 Review
1. Under what circumstances would you adjust the resource settings for a device
Adjustments to a device s system resources are usually necessary to resolve conflicts involving devices that cannot be automatically configured by the operating system s PnP technologies. Examples of such devices include older Industry Standard Architecture (ISA) devices or devices bridged to Peripheral Component Interconnect (PCI).
2. You need to remove a PnP device from a configuration temporarily but want to leave it physically connected to the computer. You want to minimize the amount of work required to use the device later. Which of the following is the best option to accomplish your goal a. From the General page of the device s Properties dialog box, choose Do Not Use this Device (Disable). b. In Device Manager, right-click the device and choose Uninstall. c. Using the Safely Remove Hardware utility, choose to stop the device.
The correct answer is a. This method will allow you to temporarily disable the device. To reactivate the device, enable it. Other options require either a reinstallation or a rescanning of the computer to reactivate the device.
3. Greg s computer has an external USB hard disk connected to a USB hub on his computer. He is reporting that the disk is connected properly, but the drive (G) normally associated with the disk is not available. Upon investigation, you discover that the indicator light on the hub is not illuminated and the device does not
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Managing Hardware Devices and Drivers
appear in Device Manager. Disconnecting and reconnecting the device has no effect. What is likely the quickest way to return the disk to proper functionality
In Device Manager, right-click the USB Hub and choose Scan for Hardware Changes. This action will force a detection of the hard disk connected to the hub as if it were a newly connected device.
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