Is there an exam at the end of the course?
Each teaching team selects its own assessment system for the course.
In most cases, passing the assessment results in earning a badge if the required minimum score is achieved.
The assessment usually includes activities throughout the course and/or a final evaluation.
This information is provided by the teaching team on the registration page and is also available on the "Course Info" page or in the introductory module.
That said, the activities are really useful for testing your understanding and tracking your progress throughout the course.