單項(xiàng)選擇題

You are installing a Cisco ONS 15454 SDH in a service provider site. An E3 cable is being connected to a digital cross-connect system. 
What is the maximum distance allowed between the two?()

A. 225 ft
B. 450 ft
C. 655 ft
D. 900 ft


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1.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.

3.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.

4.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)

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

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Click the Exhibit button. What is the maximum allowable loss budget between the ONS 15216 Mux (left side) composite output and the ONS 15216 Demux (right side) composite input, with the optical values given in the exhibit? (Assume the worst case loss of 4.5 dB for 15216 200 GHz Mux/Demux and ignore power penalties or extra margin.)  ()

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What is the difference between the transmitted power and the sensitivity of the receiver? ()

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