You are installing a Cisco ONS 15454 SDH in a service p……

单项选择题WhyisanSTM-12F-MS-SPRingNOTfeasible？（）

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.

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