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Refer to the exhibit. Link A between Switch "SW1" and HUB1" is working normally. For redundancy reasons Link B is connected. Which of the following is most likely to happen after link B is attached?
One of the ports on the SW1 will transition to block state.
Both end ports of the Link B will be in blocking state.
The link B will be automatically disabled.
Both ports will be in forwarding state and normal to communicate.
The SW1 is connected to the Hub and initially there are no switching loops. When a new link is connected, both links are in the same segment, because they are connected to a hub. The switch SW1 will hear the same BPDUs on both connected ports, so it will block one and the other one will leave it as forwarding. The decision process in this case is the following: 1) Lowest path cost to the Root, 2) Lowest Sender Bridge ID (BID), 3) Lowest Port ID.
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