What value is primarily used to determine which port becomes the root port on each nonroot switch in a spanning-tree topology?
A. port priority number and MAC address
B. lowest port MAC address
C. path cost
D. VTP revision number
E. highest port priority number
Correct Answer: C
We want the root port on a switch to be the one closest to the root switch in the spanning tree. Therefore, it must be the one with the lowest path cost back to the