In the quiz section, there are two types of quiz one is compulsory and another is optional. If you attempt the optional quiz first then you know the answers to all the problems and then you can attempt the compulsory one and paste all your answers. By which quiz credibility is decreased and anyone can complete this course easily without going through all the courses video. So, this course certificate has no meaning in the real world.
Please fix this problem and gain the credibility for this course.