NICET ITWBS Level II Exam Prep — Inspection & Testing of Water-Based Systems. NFPA 25 look-ups at about 66 seconds a question — speed under open book is the skill. 105-question practice bank, every fact taught aloud with a memory hook, explained answers, practice review tests with a labelled readiness bar (not an official score). Your first 2 modules are free — no card required.