Networking Fundamentals · lesson 15 of 17 · 12 min

Troubleshooting methodology

summary: A reliable troubleshooting process defines the problem, gathers evidence, tests one likely cause at a time, verifies the fix, and documents the result.

question: What should happen before changing a network setting?

options:

• Gather evidence and define the problem
• Restart every device
• Delete all logs
• Change multiple settings at once

correct: Gather evidence and define the problem

explanation: Evidence-based troubleshooting avoids creating new problems and makes results repeatable.

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