The document discusses common ways students cheat online and methods teachers can use to prevent cheating. It outlines 10 modes of cheating students use, such as having computer issues to reopen exams, taking exams together in the same room or on phone, looking up answers in notes or online during the exam, copying exam questions, and using other student accounts. It then provides recommendations for teachers to reduce cheating, including not revealing answers immediately, randomizing questions, stringent timing, image questions, remote proctoring in batches, and changing exams regularly.