What describes the fault tree approach in CSOSS troubleshooting?

• A. A graphical tree of unrelated faults to confuse the attacker.
• B. A method for repairing hardware without analysis.
• C. A structured method to trace from the top-level fault to root causes by evaluating possible subsystems step by step.
• D. A process for documenting faults after resolution.

Answer: (C)

In CSOSS troubleshooting, the fault tree approach is a structured way to trace from the top-level fault to root causes by evaluating possible subsystems step by step. Start with the observed symptom as the top event, then systematically analyze each subsystem that could contribute to it, testing and validating each path until you identify the true source of the problem. This method keeps the diagnostic process organized and repeatable, helps prevent overlooking potential causes, and guides targeted corrective actions once the root cause is found. It’s not about confusing an attacker, nor about repairing hardware without analysis, and while documentation can accompany the process, the fault tree itself is about the disciplined tracing of causes through subsystems.