The scenario based questions are mostly if you opt to select Latest Feb 2018 AWS SA Exam model exam. If you are selecting the old AWS SA Exam model then all are tricky definition questions and few small scenario based question. I attended exam last month and failed (61%), at that time I didn't buy or prepare with whizlab QA.
I am going to book exam again this friday with whizlab trained QA . I hope this I pass exam.