What value is primarily used to determine which port becomes the root port on each non-root switch in a spanning-tree topology?

Question:
What value is primarily used to determine which port becomes the root port on each non-root switch in a spanning-tree topology?

• path cost
• lowest port MAC address
• VTP revision number
• highest port priority number
• port priority number and MAC address

Explanation: The path cost to the root bridge is the most important value to determine which port will become the root port on each non-root switch. In particular, the port with lowest cost to the root bridge will become root port (on non-root switch).

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