There are so many resources available both online and offline to clear the 300-615 certification exam. I was worried sick whether i will be able to choose the right one to attempt the DCIT certification exam. I liked the mock tsts on nwexam.com because they helped me in self-assessment. The tests are good in a way because there is a responsibility on the shoulders to perform well. Further, i had no one else for competition but myself and so i had to make sure that i prove myself.