Most courses will conclude with an examination. You do not have to register for an examination; this is arranged automatically when you register for the course.
If you fail the examination, the faculty may, under certain conditions, offer the opportunity for a resit. The faculty has regulations in place for this purpose.
The dates and times of resits are announced at least two months in advance. If you have been scheduled for a resit, you will be notified to your student email address about two weeks before the resit. Resits are generally scheduled in the evenings.