The multiple choice answers to the 300-425 practice tests in a simulated environment are quite challenging. They keep on shuffling as well. Hence, on my second attempt I could not just attempt the mocks with the learned option but I had to attempt the question yet again. Such repeated attempts and practice gave me an idea that how about keeping a tap on my performance. Then I found out that with premium membership, personalized result feature is available, I took that and it helped.