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Check yourself 07-puid-pgid-acls-file-access: Quiz

Retrieval practice. Target >=80%.

Class 33: PUID, PGID, ACLs, and file access
Class 33 visual reference. Use it as the map, then prove it in the reading, lesson, and lab.

Overview

Module: Module 8: Docker, Storage & Permissions
Activity type: Quiz (Test)

Check yourself

Knowledge check

  1. Does Linux authorize a filename using usernames or numeric IDs?
  2. Does Docker universally implement PUID/PGID variables?
  3. What permission does a directory need for traversal?
  4. What does the ACL mask affect?
  5. Why is chmod 777 usually the wrong repair?
  6. Name two non-mode-bit causes of denial.
Learn

Answer key

  1. Numeric UID/GID values, with names as user-space labels.
  2. No; individual images may implement the convention.
  3. Execute/search permission.
  4. Effective permissions for named users, named groups, and the owning-group class.
  5. It grants unnecessary access and hides the identity/design mismatch.
  6. Read-only mount, ACL mask, SELinux/AppArmor, network identity mapping, missing parent traversal, or supplementary-group mismatch.
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