Which of the following can carry data and electricity to network devices?
Power over Ethernet (PoE) is the technology standard that allows a single Ethernet cable to carry both data and electrical power to a connected device such as an access point or IP camera. A PoE injector is the hardware device used to add that electrical current onto the data cable when the upstream switch does not natively supply PoE, making it the other component that physically delivers combined data-and-power over the cable.
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