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On the RSTP network as shown in the figure, what RSTP operations will occur after the E1 port of SWB fails? (Choose three.)

A. SWB deletes the MAC address entries with the E1 port as the destination interface.

B. The spanning tree is recalculated and the E2 port is elected as the new root port.

C. All the interfaces in forwarding state send topology change notifications (TCNs) to notify other switches of the topology change.

D. All the non-edge ports in forwarding state send TCNs to notify other switches of the topology change.

Explanation:

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