This course is not an easy HD. It is difficult in terms of content and the exams. Although the assessments are generously marked, the exam is by no means easy. The exam is totally different from the practise exam, and you would not expect to meet any original questions from weekly quizzes or practice questions. One must have a clear understanding of the concepts and pay extra attention to the details. You would be really surprise how these teachers manange to find a details that you might conisder traivial or unimportant, which nearly threw you off during the 45 minutes time of exam.