Nokia Nokia Optical Network Services Expert 4A0-265

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Nokia Optical Diagnostics and Troubleshooting Sample Questions:

1. What is the typical severity level of a "Loss of Signal" (LOS) alarm?

A) Warning
B) Critical
C) Major
D) Minor

2. Consider the exhibit. A single directional fiber cut is occurring between two amplifiers in bidirectional configuration. Which node(s) will report a "LD Input LOS" alarm?

A) Node A only
B) Node A and Node B
C) Node C only
D) Node B only

3. Which of the following statements correctly describes where power adjustments can be performed?

A) When Raman pumps are used, both ingress and egress power adjustments are performed against the Raman pump directly.
B) In unidirectional configurations, both ingress and egress power adjustments are performed against the ingress amplifiers only.
C) In bidirectional configurations, ingress power adjustments are performed against the ingress amplifiers, while egress power adjustments are performed against the egress amplifiers.
D) In bidirectional configurations, both ingress and egress power adjustments are performed against the ingress amplifiers only.

4. When troubleshooting possible generic fiber cuts, the recommended first step is to: 1. Review alarms at nodes where power loss occurs.
What is the next recommended step?

A) Review EPT design for calculated span loss.
B) Review PM data to determine if the problem is intermittent.
C) Monitor amplifier total power in/out to isolate the direction of a possible cut.
D) Perform network power traces to attempt to determine the point of power loss.

Solutions: