Can you walk me through your experience managing IT infrastructure end-to-end? Angle: highlight servers, network, virtualization, cloud, security, DR. How do you ensure high availability and reliability of critical systems? Angle: monitoring, clustering, redundancy, patching, preventive maintenance. Describe a major incident you handled and how you led the recovery. Angle: root cause, communication, coordination, post-mortem. How do you prioritize and manage multiple infrastructure projects at the same time?