Keeping a track of performance history worked for me!

I am from a small town in Nepal. Here, there are not much resources available to prepare for Dell Emc DES-1D11. Hence, i turned to online resources. And i came across dell emc midrange storage solutions specialist for technology architects on I used to keep a track of my past attempts and that i do not make silly mistakes and outscore every time. The performance history is superb and so is edusum.