what is eCertificate to register for this exam? , Are there any samples questions available for this exam? I see the syllabus is talking about 40 multiple choice questions on all Hadoop and eco systems components but i am not sure if the questions are going to be just about a component and its usage or should we expect questions on how to configure a component and its configurable parameters? Also, what is eCredit to register for this exam? ... View more