Diagnosing packet drops requires examining network interface metrics, system resources, traffic logs, performance indicators, and recent changes. AIOps aggregates many of these or links to the source data. - Option A (Correct): Direct interface statistics are crucial for confirming packet drops and potentially identifying the nature of the errors (e.g., input drops due to overload, output errors). AIOps collects and visualizes these. - Option B (Correct): High CPU or data plane load can cause packet drops due to the firewall being overwhelmed. Checking resource utilization is a standard diagnostic step available via AIOps. - Option C (Correct): Traffic logs (in CDL/Panorama) provide details about why traffic is dropped (e.g., denied by policy, hit a specific error). Filtering logs by the affected interface helps correlate drops with specific traffic types or policy enforcement. AIOps facilitates drilling down to these logs. - Option D (Correct): High session setup rate or maximum throughput being reached can indirectly lead to packet drops on interfaces as the firewall struggles to process traffic. Performance monitoring metrics provide this context. - Option E (Correct): Recent configuration changes (e.g., interface speed/duplex mismatch, new policies causing unexpected load) can cause packet drops. AIOps change correlation helps identify such potential causes.