Which of these is a Layer 2 transport architecture that provides packet-based transmission optimized for data based on a dual (counter-rotating) ring topology?()
- A、DTP
- B、RPR
- C、SDH
- D、CWDM
- E、DWDM
正确答案:B
答案解析:有
微信扫一扫手机做题
Which of these is a Layer 2 transport architecture that provides packet-based transmission optimized for data based on a dual (counter-rotating) ring topology?()
微信扫一扫手机做题