A dual-band 802.11ac AP must be powered by 802.3at PoE. As a class 4 device, what minimum power level should be received at the AP?
A dual-band 802.11ac AP must be powered by 802.3at PoE. As a class 4 device, what minimum power level should be received at the AP?
A dual-band 802.11ac AP that must be powered by 802.3at PoE and is classified as a class 4 device should receive a minimum power level of 25.5 W. According to the 802.3at PoE standard, 25.5 W is the minimum power that must be delivered to the Powered Device (PD). Any value lower than this would correspond to the 802.3af PoE standard, which does not provide sufficient power for a dual-band 802.11ac AP.
C is correct. PoE standard 802.3at denotes 25.5W(PD) 30W(PSE). 12.95W(PD) puts you in the 802.3af territory. This seems to be a trick question.
Should be B, class 4 = Power range at PD (W) 12.95–25.50 Question ask for minimum > 12,95 W
A PSE compliant with 802.3at can providen 30 watts of power onto the wire, and gurantees up to 25.5 watts of power at the PD. This is a trick question because choosing 12.95 PoE requirements into 802.3af realm. CWNA-108 pg 261