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CompTIA A+ Complete Study Guide Authorized Courseware: Exams 220-801 and 220-802, 2nd Edition by Toby Skandier, Emmett Dulaney, Quentin Docter

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Chapter 19

Troubleshooting Theory, OSs, and Security

The following CompTIA A+ 220-802 Exam objectives are covered in this chapter:

  • 4.1 Given a scenario, explain the troubleshooting theory.
    • Identify the problem: Question the user and identify user changes to computer and perform backups before making changes
    • Establish a theory of probable cause (question the obvious)
    • Test the theory to determine cause: Once theory is confirmed determine next steps to resolve problem; If theory is not confirmed re-establish new theory or escalate
    • Establish a plan of action to resolve the problem and implement the solution
    • Verify full system functionality and if applicable implement preventive measures
    • Document findings, actions, and outcomes
  • 4.6 Given a ...

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