Final answer:
The consequence of a student's cell phone ringing during an exam is that the student's exam will be voided.
Step-by-step explanation:
The consequence of a student's cell phone ringing during an exam is that the student's exam will be voided. This is to maintain fairness and avoid any disturbances during the exam. It is important for students to silence their cell phones and refrain from using them during exams to ensure a distraction-free environment.