What is the most likely reason the AP did not power up?

When deploying a new WLAN infrastructure using PoE to power the APs, you realize that a known good AP is not powering up. You use the same cable to connect your laptop and connect without any trouble.

What is the most likely reason the AP did not power up?
A . Missing AP licenses in the controller
B . Spanning-tree convergence
C . Layer 3 routing
D . Lack of PoE budget on the switch

View Answer

Answer: D