CompTIA Security+ Exam Prep

Answer: C - When two computers on an Ethernet network are trying to send information at the same time, a collision can occur. Other computers on the network will detect the collision because the overlapping signals of the collision increase the voltage of the signal above a specific threshold. The more devices on a contention-based network, the more likely collisions will occur, which increases network latency or data transmission delays. An unacceptable amount of collisions can be caused by a highly-populated network, a damaged cable or connector, too many repeaters, or cables that exceed the recommended length.