多项选择题

A. It protects signals against node failures between ri……

What are two characteristics of dual-ring interconnect in SDH networks？（）

A. It protects signals against node failures between rings.
B. It protects signals against node failure within a single ring.
C. It allows for traffic to be preempted when a ring switch occurs.
D. Traffic can be dropped and continued at interconnecting nodes.
E. It protects preemptible traffic from being dropped when a ring switch occurs.

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热门试题

单项选择题A customer would like to create a 1：1 protection group with a DS3Ni-12 card. Where should it be placed in the chassis？（）

A. only Slots 6 or 12
B. only Slots 3 or 15
C. high or low speed slots
D. directly adjacent to the working card
E. high-speed slots only （5/6 and 12/13）

单项选择题A customer has 20 E1s to add between far-end nodes in an SNCP ring. What type of circuit would you recommend？（）

A. LO-PATH circuits
B. HO-PATH circuits
C. 1：1 protection circuits
D. 1：N protection circuits
E. LO-PATH tunnel circuits

单项选择题Click the Exhibit button. As shown in the exhibit， a customer has several interconnected core rings. They want to create several irtual rings？utilizing their STM-64 backbone （nodes 1， 2， 3， and 4）. What do you recommend？（）

A. SNCP rings
B. MS-SPRing rings
C. 1：N protection on all core circuits
D. dual-ring interconnect with MS-SPRing rings

单项选择题A customer has 2 E1s to add between far-end nodes in an SNCP ring. What type of circuit should you recommend？（）

A. LO-PATH circuits
B. HO-PATH circuits
C. 1：1 protection circuits
D. 1：N protection circuits
E. LO-TUNNEL tunnel circuits

单项选择题WhatisthecorrectrelativeswitchingpriorityinanMS-SPRingring（highertolower）？（）

A. signal fail， signal degrade， manual switch
B. signal degrade， signal fail， manual switch
C. protection lockout， manual switch， path AIS
D. forced switch， manual switch， signal degrade
E. protection lockout， manual switch， forced switch