Module 2 – Test claims and extend the kernel
Require proof, not only a success banner
15-minute session: read for 3 minutes, trace for 3, experiment for 7, and complete the check for 2. Spend longer whenever you need.
boot-smoke.py requires three markers and exit status 33 from QEMU’s configured debug-exit device. It enforces a 30-second timeout and attaches no writable host disk. A banner alone would miss failures after printing. A contributor task adds controlled failure injection.
Your experiment
Read the smoke-test success condition. On a disposable copy, remove one expected marker from captured output and verify that your validation rejects it.
Practice and evidence
Keep three notes: your prediction, the actual result, and why they match or differ. The completion check grades understanding; the practice task builds skill.
Complete this lesson
Answer every check correctly to earn your lesson certificate. Feedback helps you review and try again.
Sign in · Save your progress and earn a certificate for this lesson.