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Troubleshooting methodology and best-next-step selection

5.0 Hardware and network troubleshooting · Lesson 1 of 8

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Lesson 1 of 8 · 5.0 Hardware and network troubleshooting

Troubleshooting methodology and best-next-step selection

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Explain the CompTIA troubleshooting methodology: identify the problem, establish a theory of probable cause, test the theory, establish a plan of action, implement the solution or escalate as necessary, verify full system functionality and implement preventive measures, and document findings, actions and outcomes.
Apply a best-next-step approach to hardware and network scenarios by selecting the most appropriate action based on symptoms, user statements, environmental factors and available evidence.

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Differentiate probable cause from confirmed cause and evaluate when to question the obvious, divide the problem, or test the simplest and least disruptive theory first.

Determine when to back up data, obtain user approval, follow organisational procedures and consider corporate policies before making changes.

Evaluate when escalation is required because of authority limits, safety concerns, warranty restrictions, time constraints or lack of resolution.

Document troubleshooting results clearly, including symptoms, tests performed, changes made, preventive measures and final resolution.

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