Which technology allows for the simultaneous transmission of power and data over Ethernet cables?

Power over Ethernet is the technology that enables the simultaneous transmission of power and data over Ethernet cables. This method is particularly advantageous for devices such as IP cameras, wireless access points, and VoIP phones, as it eliminates the need for separate power sources, simplifying installation and reducing cable clutter.

By using Power over Ethernet, network administrators can deliver electrical power and data to devices through a single cable, ensuring both connectivity and power supply efficiently. This technology is standardized in various IEEE specifications, such as 802.3af and 802.3at, which define how much power can be delivered and under what conditions.

The other options do not specifically address this capability of combining power and data transmission over a single Ethernet cable, making Power over Ethernet the most relevant and accurate choice in this context.