By default, quizzes do not have a time limit, which allows students as much time as they need to complete the quiz.
If you do specify a time limit, then several things are done to try and ensure that quizzes are completed within that time:
- A floating timer window is shown with a countdown
- When the timer has run out, the quiz is submitted automatically with whatever answers have been filled in so far
- If a student manages to cheat and spends more than 60 seconds over the allotted time then the quiz is automatically graded zero