Which of these technologies is characterized as being a multipoint Layer 2 VPN that connects twoor more customer devices using Ethernet bridging techniques？（）
- A、 DPT
- B、 MPLS
- C、 VPLS
- D、 CWDM
- E、 DWDM
- F、 SONET/SDH
正确答案:C
答案解析:有
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