350-601 simulated practice exams helped me think differently in many ways. As i answered multiple choice questions on the syllabus, i realized that there is so much to think about. Because the answers are jumbled up, i had to think hard about the right answer. This made me questions my knowledge and hence, i had to revise the syllabus again. Plus, the correct answers for assessment helped me assess my performance. CCNP Data Center certificate exam is passed now and it feels good.