Computer Networks/Troubleshooting/Methodology

This lesson covers troubleshooting methodology.

Objectives and Skills

Objectives and skills for the troubleshooting methodology portion of Network+ certification include:^[1]

• Given a scenario, implement the following network troubleshooting methodology
  • Identify the problem
    • Gather information
    • Duplicate the problem, if possible
    • Question users
    • Identify symptoms
    • Determine if anything has changed
    • 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 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 identify potential effects
  • Implement the solution or escalate as necessary
  • Verify full system functionality and if applicable implement preventative measures
  • Document findings, actions, and outcomes

Multimedia

1. Watch YouTube: Network Troubleshooting Methodology - CompTIA Network+ N10-006 - 4.1.

References