Question

a power-over-ethernet (poe) switch provides power to end devices. what is the maximum voltage provided by a poe1 switch port to the device?

15.4 watts
25.5 watts
17 watts
34 watts

Explanation:

Identify the PoE standard

Using the Power over Ethernet knowledge point
The question asks for the maximum power provided by a PoE1 (Type 1, IEEE 802.3af) switch port to the device.

Determine the maximum power

Using the Power over Ethernet knowledge point
Under the IEEE 802.3af (PoE Type 1) standard, the maximum power delivered by the power sourcing equipment (PSE) switch port is \(15.4\text{ watts}\).

Answer:

• (A) 15.4 watts (Correct answer)
• (B) 25.5 watts
• (C) 17 watts
• (D) 34 watts