Processes, memory, and the kernel internals behind why services get OOM-killed, throttled, or mysteriously slow in production.
Can use it - fundamentals and hands-on basics.
Can troubleshoot it - real operational depth.
Can run it in production - reliability under pressure.
Can design and scale it - platform-engineering judgment.
Real scenario-based DevOps questions, hands-on practice, and clear explanations for every answer.