Real exam is so much difficult.

I bought 1D0-425 CIW E-commerce designer exam study guide. I just wanted you to know that I passed the exam 1D0-425. They are offering 265 questions, very exhaustive to solve every questions as questions are very tough but encompasses with 74 study notes helping me and clearing all my doubts as well. Real exam is so much difficult. you should have the knowledge about whole exam topics. Although ucertify simulation test give explanation of every questions but for covering exam topics take reference book apart from exam simulation.

Well of course. It's not testing that you know the practice exam. It's testing that you know all of the material--or at least a good enough amount that you're capable of using it practically.