Switch A is configured with VLAN 105 and 106. Switch Bis configured with VLAN 105 and 107.Both switches are connected with a fiber cable. In order for packets from all VLANs to cross thefiber cable, which of the following configurations MUST be present? （）
- A、Reverse ARP
- B、Full duplex on the fiber link
- C、PoE
- D、802.1q trunking
正确答案:D
答案解析:有
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