H12-311_V3.0 · Question #307
WLAN AP can be powered by (). (Multiple choice)
The correct answer is A. POE switch B. POE adapter C. Independent power adapter. A WLAN Access Point can receive power through three legitimate methods: a PoE (Power over Ethernet) switch (A) delivers both data and electrical power over a standard Ethernet cable, a PoE adapter/injector (B) adds PoE capability to a non-PoE switch by injecting power into the…
Question
WLAN AP can be powered by (). (Multiple choice)
Options
- APOE switch
- BPOE adapter
- CIndependent power adapter
- DRF cable
How the community answered
(32 responses)- A75% (24)
- D25% (8)
Explanation
A WLAN Access Point can receive power through three legitimate methods: a PoE (Power over Ethernet) switch (A) delivers both data and electrical power over a standard Ethernet cable, a PoE adapter/injector (B) adds PoE capability to a non-PoE switch by injecting power into the Ethernet line, and an independent power adapter (C) supplies power directly from an AC outlet via a DC power brick - the most traditional method.
Option D (RF cable) is incorrect because RF (coaxial) cable is designed to carry radio frequency signals between antennas and radios, not to deliver electrical power to a device.
Memory tip: Think "power in, signal out" - APs need electrical power coming in (PoE switch, PoE adapter, or wall adapter), and they emit RF signals out through antennas via RF cable. RF cable is on the output/antenna side, never the power input side.
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