My standard policy is that there will be no make-up exams, and late assignments will not be accepted. If you just plain forgot and I agree to accept the late assignment, the grade will drop one full letter. The date of the final exam, established by University policy, cannot be altered for any student.
Excuses composed of computer problems are unacceptable.
Unexcused absences will result in a grade of zero for that day. Real emergencies will receive a sympathetic ear.