A network administrator notices that an IP camera, which is PoE-capable, is not powering up despite being connected to a PoE switch. The switch supports 802.3af and the camera is located 90 meters from the switch using a Cat5e cable. What could be the most probable cause?
The camera and switch are incompatible with each other's PoE standards.
The switch is not supplying enough power due to a high number of connected devices.
The camera requires PoE+, which the switch does not support.
The cable used is too long, leading to a voltage drop significant enough to affect power delivery.