What are the two main components of a PoE system?

What are the two main components of a PoE system?

• A. ethernet cabling
• B. power sourcing equipment
• C. bill of materials
• D. surge protective device

Answer: (B)

PoE relies on two main parts: Power Sourcing Equipment and the device that uses that power (the Powered Device). The component that best fits in the list as a main PoE element is Power Sourcing Equipment, because it’s the hardware that injects DC power onto the Ethernet cable for PoE-enabled devices. A PSE can be a PoE-enabled network switch or a midspan injector that supplies power over the data lines. Ethernet cabling is the medium that carries both data and power, not the source of the power itself. A bill of materials is simply a procurement list, not a functional PoE component. A surge protective device protects equipment from spikes, but it isn’t part of delivering PoE power. The other primary PoE partner is the Powered Device, which consumes the power provided by the PSE.

PoE relies on two main parts: Power Sourcing Equipment and the device that uses that power (the Powered Device). The component that best fits in the list as a main PoE element is Power Sourcing Equipment, because it’s the hardware that injects DC power onto the Ethernet cable for PoE-enabled devices. A PSE can be a PoE-enabled network switch or a midspan injector that supplies power over the data lines.

Ethernet cabling is the medium that carries both data and power, not the source of the power itself. A bill of materials is simply a procurement list, not a functional PoE component. A surge protective device protects equipment from spikes, but it isn’t part of delivering PoE power. The other primary PoE partner is the Powered Device, which consumes the power provided by the PSE.