Thank you Whizlabs.. but I think the quiz questions have to be corrected and made relevant. Few questions in quizzes are unrealistic and really hard , like specific API calls . It will definitely help to pass the exam , but actual exam doesn't ask specific API calls.
I scored 90% on this exam which was lot tougher than the other two. CSA 94%, Developer 96%. I did go through lot of official documentation and hands on. One thing I would recommend is to go through the official documentation wherever you got the question wrong using Whizlabs screenshots. Mock exams are really good but needs little improvement. True or False questions are not relevant.