A network switch with a PoE-enabled port is an example of a(n) ___.

A network switch with a PoE-enabled port is an example of a(n) ___.

• A. Powered device (PD)
• B. Smart device
• C. Uninterruptible power supply (UPS)
• D. Power sourcing equipment (PSE)

Answer: (D)

Power over Ethernet divides devices into those that supply power and those that receive it. The device that provides power over the Ethernet cable is called power sourcing equipment, while the device that consumes power is the powered device. A network switch with a PoE-enabled port is delivering power through that port, so it functions as power sourcing equipment. This is typically an endspan PSE when the switch itself supplies power directly to a PD (like an IP camera or VoIP phone). A device that only consumes power would be a powered device, not the source. A UPS is for battery backup and isn’t part of PoE, and a smart device is just a general term that doesn’t specify PoE role. So the best fit is power sourcing equipment.

Power over Ethernet divides devices into those that supply power and those that receive it. The device that provides power over the Ethernet cable is called power sourcing equipment, while the device that consumes power is the powered device. A network switch with a PoE-enabled port is delivering power through that port, so it functions as power sourcing equipment. This is typically an endspan PSE when the switch itself supplies power directly to a PD (like an IP camera or VoIP phone). A device that only consumes power would be a powered device, not the source. A UPS is for battery backup and isn’t part of PoE, and a smart device is just a general term that doesn’t specify PoE role. So the best fit is power sourcing equipment.