Infrastructure Troubleshooting Methodology Questions

Systematic approaches and methodologies for diagnosing complex infrastructure problems across networking, compute, storage, application, and database layers. Candidates should be able to explain how they gather and correlate observability signals such as logs, metrics, and traces, form and test hypotheses, reproduce issues, isolate faults, identify root causes, and implement both short term mitigations and long term fixes. The topic includes use of diagnostic tooling and techniques, escalation and communication during incidents, documentation of findings, and lessons learned that improve future detection and prevention.