Detailed exam results help prepare better

I got access to the Nuage Networks Expert - Software Defined WAN premium practice exams for two long months from the date on which I had purchased them. I was able to make unlimited exam attempts to practice for the 4A0-N07 certification exam. The best part of the preparation was the ability to track the progress with detailed result history for every attempt. I could not imagine all these features available in the PDF or dumps.