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CWNA-108 · Question #102

A dual-band 802.11ac AP must be powered by PoE. As a class 4 device, what power level should be received at the AP?

The correct answer is B. 25. 5W. Similar to a PoE network switch, the PoE plus switch also supplies power over two pairs, but it adds an additional power class that is able to deliver power up to 25.5W for a PD with a voltage range from 42.5V to 57V. The max power delivered by each port of a PoE+ switch is…

WLAN Components

Question

A dual-band 802.11ac AP must be powered by PoE. As a class 4 device, what power level should be received at the AP?

Options

  • A30 W
  • B
    1. 5W
  • C15.4 W
  • D12.95 W

How the community answered

(44 responses)
  • A
    18% (8)
  • B
    70% (31)
  • C
    5% (2)
  • D
    7% (3)

Explanation

Similar to a PoE network switch, the PoE plus switch also supplies power over two pairs, but it adds an additional power class that is able to deliver power up to 25.5W for a PD with a voltage range from 42.5V to 57V. The max power delivered by each port of a PoE+ switch is 30W, along with a voltage range from 50V to 57V.

Topics

#PoE#802.3at#class 4#power delivery

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