I find MOST of the Ipsos certification tests have a definite disconnect with their official Guidelines/Questionnaires.
Don't take it personally! Do your best, take the quiz 3 times, and if you haven't passed, reach out to your scheduler - he/she will help to ensure that you are able to pass!
I don't know if the certification exams are changing or if the guidelines are.. but on some shops the exams have nearly zero resemblance to the information in the guidelines. I've been fighting with one certification for a while now and I'm about to give up.