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Check yourself 04-processes-signals-and-systemd: Quiz

Retrieval practice. Target >=80%.

Class 19: Processes, signals, and systemd
Class 19 visual reference. Use it as the map, then prove it in the reading, lesson, and lab.

Overview

Module: Linux Foundations
Activity type: Quiz / retrieval practice
Target: ≥80%
Objective: Distinguish programs, processes, threads, jobs, services, and systemd units

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Questions

    1. What is the difference between a program and a process?
    1. Why is a PID read from a file insufficient proof of process identity?
    1. Which signal should normally be tried first when requesting an orderly process shutdown?
    1. Which two signals cannot be caught, blocked, or ignored?
    1. What does a T in the ps STAT column generally indicate?
    1. Why can SIGKILL create operational problems even though the kernel reclaims the terminated process's memory?
    1. What is the difference between a shell job identifier such as %1 and a PID?
    1. How does a systemd service unit relate to a cgroup?
    1. Which systemctl subcommand is useful for retrieving machine-readable unit properties?
    1. Why might a Bash signal trap run shortly after the signal rather than at the exact instant it is sent?
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After scoring

  • Missed items → return to Reading → redo Feynman Retry → reattempt.
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