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Check yourself 05-logs-and-journalctl: Quiz

Retrieval practice. Target >=80%.

Class 20: Logs and journalctl
Class 20 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: Explain the relationship between applications, systemd units, systemd-journald, and journalctl.

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Questions

    1. Which component collects and stores structured system journal records?
    1. What does journalctl -b select?
    1. What does journalctl -p warning include besides warning records?
    1. Why might journalctl --list-boots show only the current boot?
    1. What is the practical advantage of journalctl -o json for automation?
    1. Name three useful ways to narrow a journal query.
    1. Does an empty unit query prove that the service emitted no records?
    1. Why should exported journal records be protected with restrictive permissions?
    1. What is the difference between volatile and persistent journal storage?
    1. Why should an administrator correlate multiple fields and surrounding events before declaring a root cause?
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After scoring

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