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    How switches learn MAC Addresses



      The correct answer for this question is A and B. I thought B would be the only answer because PC1 sends a frame to PC2 so the Switch will add PC1 MAC  address to the CAM table and then flood port  Fa 0/2 and 0/3. I thought then Fa 0/2 will respond to the flood, and then be added to the CAM table. Then when PC3 tries to send a frame to PC2 MAC address it will then add PC3 MAC to the CAM table and forward the frame directly out of Fa 0/2. Can someone explain how A and B is the correct answer.

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