A Network Troubleshooting Methodology
This chapter covers the following topics related to Objective 5.1 (Explain the network troubleshooting methodology) of the CompTIA Network+ N10-008 certification exam:
Identify the problem
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 ...
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