I have passed the AWS CSA today, happy to say, Whizlabs provides great material!
Although there are only less than 20% questions in the real exam(maybe not lucky, because the questions for the real exam were extraced randomly from AWS question library, lol~~~), but through complete all of tests in Whizlab, I can not only get the right answers after finish the test(other websites also provide many practice questions for CSA, but there are many wrong answers, and no explanations for the answer, ops...), but also get the very detail explanations.
It's really helpful to me, because the practice questions cover all of the range which in the real exam, by the explanations, I know what and why the answer is for the question, and I can read the related knowledge points by the link in the explanation.
I can't imagine without this, I have to read all of the materials from Amazon website, not only know the the question's style, but also enhance my confidence for the exam.
I highly recommend Whizlabs to anyone who want to pass AWS CSA~~~