Book updated Jun 2023. The Nevada Fire Protection (C-41)License examination covers Fire Sprinklers (C-41a), Fire Extinguishing Systems (C41b) and Fire Alarms (C-41c). PSI administers the exam, and a score of at least 70% is required to pass the exam.We create these self-practice test questions module referencing the principles and concepts currently valid in the fire protection profession. They are for reinforcing learning, NOT for simulating "real" questions. Each question comes with an answer and a short explanation which aids you in seeking further study information. For purpose of exam readiness drilling, this product includes questions that have varying numbers of choices. Some have 2 while some have 5 or 6. We want to make sure these questions are tough enough to really test your readiness and draw your focus to the weak areas. You should use this product together with other study resources for the best possible exam prep coverage.