Self paced courses can be taken at any time, with topics and lessons being completed by you based upon your schedule.
You can move through the lectures and materials as quickly or as slowly as you like. Some self-paced courses do not offer certificates and others grant certificates upon successful completion, or completion of a related examination.
All of the universities courses are self-paced.
Examinations have specific time periods within which they must be completed, and this is completely different from the topic of self-paced courses.