Which technology allows the use of the same cable for both data and power transmission?

Power over Ethernet (PoE) is the technology that enables the simultaneous transmission of data and power over the same Ethernet cable. This is particularly advantageous in networking and security applications, as it simplifies installation and reduces the need for additional electrical wiring. Devices such as IP cameras, VoIP phones, and wireless access points can receive power and data through a single cable, leading to a cleaner setup and easier maintenance.

Using PoE is especially beneficial in situations where it may be difficult or costly to install separate power sources, such as in remote locations or densely populated setups where space and accessibility are constraints. This technology supports standard Ethernet cables and can deliver sufficient power for many devices while maintaining data integrity and speed.

Other options like fiber optic, Bluetooth, and Wi-Fi do not provide a means of delivering power along with the data. Fiber optic cables are designed exclusively for data transmission. Meanwhile, Bluetooth and Wi-Fi are wireless communication technologies that do not involve physical cabling for either data or power transmission. Thus, Power over Ethernet stands out as the only technology in this context that effectively combines both capabilities seamlessly.