Book updated Nov 2020. We create these self-practice test questions module (with 100+ questions) referencing both the principles/concepts as well as some state specific information currently valid in the corresponding trade. 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.