What is a characteristic of ISL and 802.1q frame tagging in a switched LAN environment?（）A、They are used to find the best path through a network.B、They allow the exchange of filtering tables.C、They specify different implementations of the Spanning-Tree Protocol.D、They allow the exchange of routing tablesE、They provide inter-switch VLAN communication.
What is a characteristic of ISL and 802.1q frame tagging in a switched LAN environment?（）
- A、They are used to find the best path through a network.
- B、They allow the exchange of filtering tables.
- C、They specify different implementations of the Spanning-Tree Protocol.
- D、They allow the exchange of routing tables
- E、They provide inter-switch VLAN communication.
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