Exam: Lean Six Sigma Study Guide 2026–2027 — supplemental practice. All three previously validated belt simulators are included in this single file. Four options (A–D), one correct answer, and explanations throughout.

Blueprint sources: Official IASSC Yellow, Green, and Black belt outlines. Yellow allocation: Define 40%, Measure 40%, Control 20% (supplemental editorial weights). Green and Black: each DMAIC phase 20%.

Validator: PASS on the first run for each bank; zero regeneration rounds, zero near-duplicate flags, and zero length-balance warnings. Threshold 0.82; section tolerance ±4 percentage points. Difficulty tags in each complete bank follow 30% easy / 50% medium / 20% hard.

Format: User-approved four-option supplemental practice. Yellow's 100-question exam is an override of the published 60-question format. The official IASSC pages describe multiple-choice and true/false items. This file contains the existing three practice banks, not 27 distinct full-length forms. There are 500 placements across the levels and 270 distinct questions, with foundational items shared between belts.

Behavior: Each engine randomly allocates its bank between exam and quiz. Exact section weights and answer-sequence rules apply to the complete validated bank, not every randomized session. Shuffling changes selections and order; it does not create new questions. Progress is separate for each belt. When switching belts, an active attempt returns to its dashboard; use Resume to continue if progress saving is enabled. Exam time continues to elapse while away.

Verification: Original engine logic checks passed for parsing, counts, scoring, feedback, and session restoration. The combined file preserves each embedded engine exactly and checks belt selection and packaging. Visual browser testing was unavailable. Existing external fonts and icon stylesheets are retained.