What is a primary function of a power-over-Ethernet (PoE) system?

The primary function of a power-over-Ethernet (PoE) system is to transmit both data and power through a single cable. This is significant because it simplifies the installation of network devices, eliminating the need for additional electrical wiring and outlets. PoE technology enables devices such as IP cameras, VoIP phones, and wireless access points to receive power directly from the Ethernet cable, which streamlines deployment and reduces overall infrastructure costs.

The integration of power and data in one cable enhances cable management and reduces clutter, making installations cleaner and more efficient. Additionally, with PoE, devices can be placed in areas that might be impractical to reach with standard power outlets, expanding the versatility of network deployments.

While other options may address related concepts in networking, they do not capture the essence of what PoE fundamentally offers, which is the combination of power and data transmission over a single medium.