CompTIA Network+ N10-006 Q696

Zach, a technician, discovers a switch is not communicating with the other switches in a stack.
Which of the following is the MOST likely cause?

A. Both T568A and T568B standards are being used.
B. STP is disabled.
C. The cable is not a crossover.
D. The port is not trunked.

Correct Answer: C