I have a couple questions about the CSWE exam. I still need to take one more module before even attempting to take the exam but I also plan on getting Paul Tran's book first. Is the exam tailored to the 4 modules you take or is it a one size fits all that can have questions relating to the module/s you haven't taken? Also, can you use the free voucher for the exam? Roughly how long is the exam in terms of number of questions. I know it's scheduled for 4 hours and I've read where people had time to go back and double check all of the questions.
For those who've used Paul Tran's book, if I got a previous version of the book (maybe the 2016 edition) would that suffice or have things changed on the exam over the last 3 or so years? Obviously, actual examples changed but what about the structure?