Scenario-based questions ask you to reason aloud through a messy, realistic situation. This one is a multi-corner multi-mode storm: a new mode, a bigger matrix, and a failure that appears in exactly one scenario. The four lessons give the situation, the investigation in order, the root cause with the fix, and how to narrate it in about a minute.
Lesson | After it you can... |
|---|---|
Restate the situation and the first questions to ask. | |
Localise the failure by scenario attributes and by delay ratio. | |
Explain temperature inversion and the shared-segment fix plan. | |
Tell the story with Assumption, Mechanism, Trade-off, Evidence. |
It has a clear symptom, several plausible wrong turns (derates, constraints, parasitics), and a root cause that depends on understanding corners rather than on a trick.