Which one of the following is the most commonly used layer 2 network device?（）A、HubB、BridgeC、SwitchD、RouterE、RepeatersF、None of the above
Which one of the following is the most commonly used layer 2 network device?（）
- A、Hub
- B、Bridge
- C、Switch
- D、Router
- E、Repeaters
- F、None of the above
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