Requirements to Graduate from a course and receive certificate

Hi, in order for a student to graduate from a course he must pass Quizzes only? How about if a course, doesnt have Quizzes, just assignments, like after watching some units which are Videos, the student has to send a practical case study assignment via uploading a PDF on the assignment (which the course admin will check). Would that be enough to graduate, besides watching all the units which will be Vimeo videos.  Or to graduate, and receive the certificate a student must pass quizzes which the course admin must evaluate and give a grade (requieres a minimum grade to graduate) in order to graduate? Thanx