單項(xiàng)選擇題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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2.多項(xiàng)選擇題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.

3.單項(xiàng)選擇題

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)

4.單項(xiàng)選擇題

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

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What protection method is used in 4F MS-SPRing networks?()

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Which timing mode is appropriate for an SDH NE that is adjacent to an SDH NE Bits-1 timing? ()

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Given the formula: (Fiber Attenuation * Km) + (Splice Attenuation * # of Splices) + (Connector Attenuation * # of Connectors) + (Optical Fiber or OADM) + Buffer(Fiber aging)) With regard to SONET/SDH optical calculations, what will the given formula provide?()

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On an ONS 15454 node you can tunnel a(n) ().

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If the dispersion of a given fiber is 17ps/nm*km at 1550 nm and zero at 1310 nm, then what is the accumulated dispersion of an ITU wavelength after it travels 200 km? ()

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What is an advantage of an externally modulated laser over a directly modulated laser? ()

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Click the Exhibit button. Which type of multiplexer is shown in the exhibit?()

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If the power is 0 dBm, what is the power in mW?()

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What are three factors that limit the maximum distance of an amplified optical signal without regeneration? ()

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