单选题Why will as witch never learn a broadcast address？（）ABroadcast frames are never sent to swiches.BBroadcast addresses use an incorrect format for the switching table.CA broadcast address will never be the source address of a frame.DBroadcasts only use network layer addressing.EA broadcast frame is never forwarded by a switch.
单选题
Why will as witch never learn a broadcast address？（）
A
Broadcast frames are never sent to swiches.
B
Broadcast addresses use an incorrect format for the switching table.
C
A broadcast address will never be the source address of a frame.
D
Broadcasts only use network layer addressing.
E
A broadcast frame is never forwarded by a switch.
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