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【单选题】

What will an Ethernet switch do if it receives a unicast frame with a destination MAC that is listed in the switch table（）。

A、The switch will not forward unicast frames.

B、The switch will forward the frame to a specific port.

C、The switch will return a copy of the frame out the source port.

D、The switch will remove the destination MAC from the switch table.

E、The switch will forward the frame to all ports except the port on which it was received.

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