The exam can be cancelled without failed attempt by cancelling the registration in the AVG Lecture Quiz Server and ALMA one week before the exam takes place. If the option for cancelation is not available anymore, please send an email to the lead TA before the exam has started or by personally notifying the TAs prior to the start of the exam. Note that you will also need to cancel your registration if you registered only via the AVG Lecture Quiz (but not via ALMA) in case you do not want to participate in the exam. Once the exam has started, you cannot cancel anymore.