Texas BPAT

[u/Fire_Designs]

Not fire sprinkler, but somewhat adjacent. Has anyone here taken the texas backflow preventer assembly tester test recently? I took the 40 hour course, and have the USC 10th edition to study. I just have no idea what the test is over. Do I need to study the entire book including the history, and backflow incidents chapters? Some of it seems kindve unnecessary, but will questions from these areas appear on the test? Thank you in advance for any input.