A customer has 2 DS1s to add between adjacent nodes in a UPSR ring. What type of circuit should you recommend?()
- A、VT circuits
- B、STS circuits
- C、VT tunnel circuits
- D、1:1 protection circuits
- E、1:N protection circuits
正确答案:A
答案解析:有
微信扫一扫手机做题
A customer has 2 DS1s to add between adjacent nodes in a UPSR ring. What type of circuit should you recommend?()
微信扫一扫手机做题