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Check yourself 06-ssh-keys-and-safe-hardening: Quiz

Retrieval practice. Target >=80%.

Class 21: SSH keys and safe hardening
Class 21 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 different roles of an SSH private key and public key.

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Questions

    1. Which member of an SSH key pair must remain secret?
    1. What security property does an SSH key fingerprint provide?
    1. Why should an administrator keep an existing SSH session open while applying a hardening change?
    1. Does a private-key passphrase get sent to the SSH server during public-key authentication?
    1. What does the authorized_keys restrict option generally do?
    1. Why is host-key verification still necessary when the user has a strong Ed25519 key?
    1. Is a successful daemon syntax test sufficient proof that a new administrative login will work?
    1. Why can disabling TCP forwarding be operationally disruptive?
    1. What is the purpose of testing with IdentitiesOnly when validating a specific key?
    1. Why is the 192.0.2.0/24 source restriction in this lab not appropriate to copy directly into production?
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After scoring

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