Take a test run for the CSL Exam. Modeled after the actual exam, the practice test is timed for 3 hours (you can log out and back in for a total of 3 hours for up to 30 days) and contains 75 real exam questions from the IBC, IRC, IECC and OSHA. MA test takers will also get questions from 781CMR - Massachusetts Amendments, and 521CMR - Architectural Access Board (AAB). You will get immediate results and feedback on incorrect answers.