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Table Of Contents  CertiGuide to A+ (Operating Systems)
 9  Introduction and “Guide to the Guide”
      9  CompTIA A+ OS Technologies Exam Blueprint

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Domain 2.0: Installation, Configuration and Upgrading
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Domain 4.0: Networks
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Domain 3.0: Diagnosing and Troubleshooting

3.1 Recognize and interpret the meaning of common error codes and startup messages from the boot sequence, and identify steps to correct the problems:

  • Safe Mode

  • No operating system found

  • Error in CONFIG.SYS line XX

  • Bad or missing COMMAND.COM

  • HIMEM.SYS not loaded

  • Missing or corrupt HIMEM.SYS

  • SCSI

  • Swap file

  • NT boot issues

  • Dr. Watson

  • Failure to start GUI

  • Windows Protection Error

  • Event Viewer - Event log is full

  • A device referenced in SYSTEM.INI, WIN.INI, Registry is not found

3.2 Recognize common problems and determine how to resolve them.

  • Eliciting problem symptoms from customers

  • Having customer reproduce error as part of the diagnostic process

  • Identifying recent changes to the computer environment from the user

  • Troubleshooting Windows- specific printing problems

  • Print spool is stalled

  • Incorrect/incompatible driver for print

  • Incorrect parameter

  • Other Common problems:
    • General Protection Faults

    • Illegal operation

    • Invalid working directory

    • System lock up

    • Option (Sound card, modem, input device) or will not function

    • Application will not start or load

    • Cannot log on to network (option NIC not functioning)

    • TSR (Terminate Stay Resident) programs and virus

    • Applications don't install

    • Network connection


  • Viruses and virus types:
    • What they are

    • Sources (floppy, emails, etc.)

    • How to determine presence

Previous Topic/Section
Domain 2.0: Installation, Configuration and Upgrading
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Domain 4.0: Networks
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Version 1.0 - Version Date: January 7, 2005

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