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 A+ Practical Application (220-802) Cram Notes


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4.6 Given a scenario, troubleshoot operating system problems with appropriate tools

1. While preparing for dual boot with Windows 2000 Professional, note the following points:

a. Windows 2000 must be installed on a separate volume. If a separate volume is not available, repartition the hard disk suitably, and reformat. You also need to take suitable backup.

b. If you want to have dual boot between Windows NT 4 and Windows 2000 as the only operating systems, ensure that Service Pack 4 is installed on Windows NT 4. This is required since Windows 2000 upgrades the NTFS to NTFS 5. NT4 requires Service Pack 4 to read and write to NTFS 5.

c. You must install Windows 2000 only after installing MS-DOS or Windows 95.

2. By default, you can start recovery console on a PC using Windows 2000 OS using,

a. The Windows 2000 Professional Setup Disks

b. From the CD ROM drive using Windows 2000 Professional CD (if the CD –ROM drive is bootable).
Also, you can have “Recovery Console” as a start up option by typing \i386\winnt32.exe /cmdcons at the command prompt, after switching to the CD ROM drive letter.

3. Fault tolerance boot disk is a floppy disk that enables you to boot a computer in the event that the first disk in a mirrored volume fails. If you mirror the installation folder in a Windows 2000 Server, you will not be able to boot because boot.ini points to the first volume. Therefore, you need to create a fault tolerance boot disk that contain an appropriately edited Boot.ini file, that points to the mirrored volume.

4. If you fail to boot, first try to boot in Safe Mode. If it doesn’t work, try booting to Last Known Good Configuration. If both fail, you can try using Recovery Console.

5. If your Microsoft Windows XP-based computer does not start correctly or if it does not start at all, you can use the Windows Recovery Console to help you recover your system software.

6. Automated System Recovery (ASR) is a part of an overall plan for system recovery so that you are prepared if the system fails. ASR should be a last resort for system recovery. Use ASR only after you have exhausted other options. It is recommended that you use ASR only if all other options to repair the system (such as Last Known Good, and Safe Boot) have failed.

4.7   Given a scenario, troubleshoot common security issues with appropriate tools and best practices.

1. Blue screen messages are also called STOP messages. You will not be allowed to proceed, when a blue screen message appears. The most likely cause of blue screen messages are:

a. Boot sector virus

b. IRQ/ IO address conflicts.

You can check for any boot sector virus, and also for any conflicting IRQ / IO addresses.

2. System Restore automatically track changes to your computer and creates restore points before major changes are to occur. To create a restore point, System Restore takes a full snapshot of the registry and some dynamic system files. For example, restore points are created before new device drivers, automatic updates, unsigned drivers, and some applications are installed.
To create a System Restore Point in Windows XP, use the sequence, Start | All Programs |Accessories | System Tools, and then click System Restore.

3. System Restore takes a “snapshot” of critical system files and some program files and stores this information as restore points. You can use these restore points to return Windows XP to a previous state.

4. The automatic restart option in Windows XP is enabled by default. As a result, if there is any major error, the Operating System will automatically restart. This can be disabled using System applet in the Control Panel. If an older program doesn't run correctly, use the Program Compatibility Wizard to simulate the behavior of earlier versions of Windows.

5. A POST test card is a small diagnostic tool that displays error codes generated during the Power On Self Test. These errors, called POST codes, correspond directly to a test that has failed and can help determine what piece of hardware is causing an issue. Most POST test cards plug directly into expansion slots in the motherboard while a few others connect externally via a parallel or serial port. Also Known As: Power On Self Test card, POST card, POST diagnostic card, checkpoint card, port 80h card

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