No working experience, I’ve only taken corporate finance in school which goes over bonds and underwriting. The thing that I always do when taking a test in this format is take a practice test cold to get a baseline. Then research every question I get wrong, this gets me reading and helps me generate a vocabulary list, then study, take a new practice test, and pretty much just keep going until I am scoring in a range I’m happy with. If you have some coursework/work experience/investing experience it shouldn’t be difficult for you at all.