Practice exams are very challenging

I found pdf files very easy and boring. What made me sit and notice the 1Z0-804 oracle practice tests on the site oraclestudy.com is their random order. The questions for java-se-7- Programmer II were very challenging. They had shuffled multiple choice answers which made me think more and attempt the question very carefully. This way, i never forgot the answer and gave the actual exam with 100% confidence an in result.