If no bridge priority is configured in PVST, which criteria is considered when electing the root bridge?

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If no bridge priority is configured in PVST, which criteria is considered when electing the root bridge?

lowest MAC address
lowest IP address
highest IP address
highest MAC address

Explanation: Only one switch can be the root bridge for a VLAN. The root bridge is the switch with the lowest BID. The BID is determined by priority and the MAC address. If no priority is configured then all switches use the default priority and the election of the root bridge will be based on the lowest MAC address.

If no bridge priority is configured in PVST, which criteria is considered when electing the root bridge?

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