Your question is Owning an Ambiguous Memory Incident. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
Tell me about a time you had to lead a customer issue where the root cause was unclear at first—such as a performance or memory-related problem—and you had to coordinate investigation, manage escalation, and keep the customer confident while the team worked through ambiguity. What did you do, and what was the outcome?