ced4568andClaude Sonnet 5
15b616274b
Adds all 6 ROOT 01 modules (how computers run software, the shell, filesystem navigation, files & text, processes, users & permissions foundations), each with a real lesson, demonstration/guided exercise, knowledge check where warranted, a hands-on Lab, and a reflection — 35 activities, 29 new content files. Adds 6 new hands-on Linux scenarios (linux-inspect-hardware, linux-shell-basics, linux-filesystem-navigation, linux-files-and-text, linux-process-management, linux-permissions-foundations) plus 2 MCQ scenarios, using the existing generic scenario/ validation engine (docs/ROOT_FOUNDATIONS_LAB_STRATEGY.md §1) — every one tested end-to-end via the real scenario setup/validate API, including negative tests confirming they correctly FAIL when not actually solved (e.g. the process-management scenario fails while the target process is still running; the permissions scenario is tested against a real `su - labuser` denial). Wires rootnode-linux-foundations-assessment (2 required + 4 random-draw scenarios) using the existing Phase 3B assessment engine. Adds a real, server-side ROOT 01->02->03->04->05 course prerequisite chain (courses.prerequisites) — verified live on two students: one who completed ROOT 01 sees ROOT 02 unlock; a fresh student sees ROOT 02 correctly locked while 03/04/05 stay vacuously satisfied (their own prerequisite courses are still empty). ROOT 06+ and the Capstone are unaffected. Co-Authored-By: Claude Sonnet 5 <[email protected]>
23 lines
1.0 KiB
JSON
23 lines
1.0 KiB
JSON
{
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"id": "linux-permissions-mcq",
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"title": "Choosing the Minimal Permission",
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"category": "Linux Fundamentals",
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"isolation_type": "shared_namespace",
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"difficulty": "Easy",
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"type": "mcq",
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"weight": 3,
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"description": "## Choosing the Minimal Permission\n\nA private SSH key file should be readable and writable by its owner only — nobody else should be able to read, write, or execute it. Which `chmod` octal value is correct?",
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"options": [
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{ "id": "a", "text": "777" },
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{ "id": "b", "text": "644" },
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{ "id": "c", "text": "600" },
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{ "id": "d", "text": "444" }
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],
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"correct_option": "c",
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"explanation": "600 grants the owner read+write (4+2=6) and nothing at all to group or other (0, 0) — the minimum needed, and the actual permission SSH itself enforces for private key files. 644 incorrectly leaves the file readable by everyone; 777 grants full access to everyone, the opposite of least privilege.",
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"hints": [],
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"setup_commands": [],
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"default_namespace": "default",
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"teardown_commands": []
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}
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