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问题详情

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 circuit

时间：2022-01-03 17:05 关键词： CCNP(642-311)

答案解析

A

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