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:2022-09-26 12:22:01 所属题库:CCNP(642-311)题库

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