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Nokia Optical Diagnostics and Troubleshooting Sample Questions:

1. Which of the following Performance Measurement (PM) type is NOT typically retrieved at an Optical Transponder (OT) line interface?

A) Digital Wrapper (DW)
B) Ethernet collision counters
C) Optical Power Received (OPR)
D) Forward Error Correction - Errors Counted (FEC-EC)

2. Which of the following commands is used to retrieve the total output power level?

A) show interface am212 5a 1/6/lineout pm
B) show interface am2125a 1/6/lineout wavekey
C) show interface am2125a 1/6/lineout detail
D) show interface am2125a 1/6/lineout

3. Suppose a node is experiencing a little unexpected attenuation over the Optical Supervisory Channel (OSC) transmit direction. Which of the following statements is FALSE?

A) Traffic will pass between the local and adjacent node.
B) A Power adjustments action will fail on the local node.
C) No OSC-related alarms will raise on the local node.
D) A "Data Link Down" alarm will raise on the adjacent node.

4. Consider the exhibit. A single directional fiber cut is occurring between two amplifiers in unidirectional configuration with Raman pump.
Multiple services are crossing the affected span.
Which node(s) will report an Incoming Payload LOS" alarm?

A) Both Node A and Node C
B) No node, as a Raman pump is used in Node A.
C) Node C only.
D) Neither Node A nor Node C.

Solutions: