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Check yourself 05-network-troubleshooting-tools-and-methodology: Quiz

Retrieval practice. Target >=80%.

Class 26: Network troubleshooting
Class 26 visual reference. Use it as the map, then prove it in the reading, lesson, and lab.

Overview

Module: Network Operations
Activity type: Quiz / retrieval practice
Target: ≥80%
Objective: Apply a layered troubleshooting workflow from local state through application response

Learn

Questions

    1. Why should ip route get 127.0.0.1 be used in addition to viewing interface addresses?
    1. What does an immediate TCP connection refusal usually tell you that a timeout does not?
    1. If getent ahosts server.example succeeds, what has been proven and what has not been proven?
    1. Why can an HTTP 404 response be evidence that basic network connectivity is working?
    1. Which command in this lesson identifies whether ports 18080 and 18081 have TCP listeners?
    1. What is the diagnostic significance of a service being bound to 127.0.0.1 rather than a non-loopback address?
    1. Why must the process command line be checked before using the PID stored in server.pid?
    1. In the lab, what evidence supports the conclusion that the client used the wrong destination port?
Learn

After scoring

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