单项选择题

WhyisanSTM-12F-MS-SPRingNOTfeasible？（）……

Why is an STM-1 2F-MS-SPRing NOT feasible？（）

A. An equal amount of working and protect bandwidth is required.
B. DCC bandwidth is not large enough to handle K1/K2 processing.
C. Switch times would exceed 50 ms for an STM-1 MS-SPRing ring.
D. There is not enough bandwidth in an STM-1 ring to justify MS-SPRing protection.

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热门试题

单项选择题You are provisioning an E-1 circuit on an ONS 15454 SNCP configuration and XC-VXL-10G card. How many total ports are used within the Low-Order matrix at the source node？（）

A. 0
B. 1
C. 2
D. 3
E. 5

多项选择题Whataretwocharacteristicsofdual-ringinterconnectinSDHnetworks？（）

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.

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