Your question is Troubleshoot a Linux Server. 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 how you would troubleshoot a Linux server that suddenly becomes unresponsive.
Explain how you would confirm the failure, preserve evidence, isolate the cause, and restore service safely. Cover stakeholder communication, escalation, rollback or recovery decisions, and the follow-up actions that would prevent recurrence.