單項選擇題

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


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1.多項選擇題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.

2.單項選擇題

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)

3.單項選擇題

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

5.單項選擇題

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

6.單項選擇題What is the correct relative switching priority in an MS-SPRing ring (higher to lower)? ()

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

9.單項選擇題What is the difference between 1+1 and 1:1 protection switching?()

A. 1+1 is based on APS, while 1:1 is based on IPS.
B. 1:1 is used in SNCP switching, while 1+1 is used in MS-SPRing switching.
C. 1+1 sends signals on Working and Protect paths, while 1:1 sends signals only on Working path.
D. 1+1 sends signals on Working path ONLY, while 1:1 sends signals on both Working and Protect paths.

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