You are the network consultant from Cisco.com. Please point out which Layer 2 access designs does not support VLAN extensions?（）
- A、Flex Links
- B、loop-free U
- C、looped square
- D、looped triangle
正确答案:B
答案解析:有
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You are the network consultant from Cisco.com. Please point out which Layer 2 access designs does not support VLAN extensions?（）
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