Chapter 18Network  Troubleshooting Methodology

THE FOLLOWING COMPTIA NETWORK+ EXAM OBJECTIVES ARE COVERED IN THIS CHAPTER:

  • Domain 5.0 Network Troubleshooting
  • 5.1 Explain the troubleshooting methodology.
    • Identify the problem
      • Gather information
      • Question users
      • Identify symptoms
      • Determine if anything has changed
      • Duplicate the problem, if possible
      • Approach multiple problems individually
    • Establish a theory of probable cause
      • Question the obvious
      • Consider multiple approaches
        • Top-to-bottom/bottom-to-top OSI model
        • Divide and conquer
    • Test the theory to determine the cause
      • If the theory is confirmed, determine the next steps to resolve the problem
      • If the theory is not confirmed, reestablish a new theory or escalate
      • Establish a plan of action ...

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