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What value is primarily used to determine which port becomes the root port on each nonroot switch in a spannin

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

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A.
path cost

B.
lowest port MAC address

C.
VTP revision number

D.
highest port priority number

E.
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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