CompTIA Exam Questions

Which of the following explains this situation?

A technician moves a VoIP phone to a new location, but discovers the phone does not start up when plugged into the network. Which of the following explains this situation?

A.
The switch does not support PoE.

B.
The jack needs to be rewired using the 568B standard.

C.
QoS is not enabled on the switch.

D.
The phone needs a fiber port.