I took the exam twice, spend almost two weeks on them. The material of this role is about 500 pages, I can use it as a stander when I take the exam. But here it's the thing, the whole material is just a general idea what's the rate should be, when I give the answer in the exam I base on my judgment. After the test I never know which part I did wrong, the company send me an email say I didn't past, but never mention which part I should pay attention to. Feel like a scam to me, and I wast my two weeks doing this.