Which two protocols are used by bridges and/or switches to prevent loops in a layer 2 network?（）A、802.1dB、VTPC、802.1qD、STPE、SAP
Which two protocols are used by bridges and/or switches to prevent loops in a layer 2 network?（）
- A、802.1d
- B、VTP
- C、802.1q
- D、STP
- E、SAP
相关考题：
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