How we build our practice tests

Every cert bank starts from the official vendor exam blueprint (AWS exam guide, Microsoft Learn paths, PMI ECO, CKA curriculum, etc.) plus public vendor documentation.

The pipeline

• Blueprint parsed into weighted domains and knowledge areas
• Questions authored by Claude Sonnet 4.6 with cached exam-context prompting
• Verifier pass: 25% sample re-checked for correctness and blueprint alignment
• Per-option teardowns: every distractor gets a "why this is wrong" explanation
• Difficulty labels (1–5 star) so the adaptive engine can pick harder questions after correct answers, easier ones after misses

What we do not do

No leaked exam dumps. No NDA-protected content. No copy-paste from other providers. Every certification vendor's real exam content is NDA-restricted, and we author from public materials only.