I hear your pain. I have been there and been made to feel that I can't get it right either. So, once I gave up and emailed them - probably the scheduler for the client and said here is a list of the answers I think are correct - could you give me a hint? Twice I did this and they told me which question I had wrong. Once, they had it blatently wrong so I could not get it right on my own without randomly changing answers.
Since then, I have kept a copy of the test with passing answers for future exams. Periodically, the client changes the information or shop requirements so they make us take another test. The good news is that the next test is usually with one different question so it's easy to deal with.
Happy Shopping!
Happily shopping Rhode Island and nearby Massachusetts and Connecticut