Useful Tools CMRT/CTE book Practice Questions: CMRT Candidate Guide for Certification and Recertification Exam Duration CMRT examinees have three hours to finish the examination. The examination is split into identical components with an non-obligatory Cmrp Certification 10-minute wreck in-among. After Part 1 is finished and closed, applicants could be not able to make edits to Part 1. CMRT examinees have three hours to finish the examination. The examination is split into identical components with an non-obligatory 10-minute wreck in-among. After Part 1 is finished and closed, applicants could be not able to make edits to Part 1.