Some courses have mandatory activities. You need to pass the mandatory activities in order to be eligible for the exam. In the course catalogue, you can see if your courses have mandatory activities.
If you do not pass the mandatory activities
You will receive the grade NA (not approved) at the ordinary exam, if the mandatory activities are not approved before the deadline set by the course manager. You will use an exam attempt.
Re-exam
Before the re-exam you again need to have the mandatory activities approved. Therefore contact your course manager asap for a new agreement on when to submit the mandatory activities.