Book updated October 2020. The Tennessee BC-A - RESIDENTIAL CONTRACTOR Exam has a wide range of topics. This product focuses solely on ROOFING. There are 110+ roofing questions included. Even though there are code related questions that are state specific, roofing related technical questions are almost always based on the NRCA answers! We create these supplemental self-practice test questions module referencing the principles and concepts currently valid in the roofing trade. Each question comes with an answer and a short explanation which aids you in seeking further study information. These questions are intended as supplementary study material for fundamental knowledge establishment. They are NOT actual past-paper questions. You should use this product together with other study resources for the best possible exam prep coverage.