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Nokia Optical Diagnostics and Troubleshooting Sample Questions:

1. Which of the following statements about the Wavelength Tracker (WT) capability is TRUE?

A) Wave Keys are originated by optical amplifiers.
B) WT uses a unique identifier based on a pair of numbers encoded by Optical Transponders OTs) into each service wavelength direction.
C) WT is compatible with other vendor domains, but the user must make sure that Wave Keys are unique on the crossed domains.
D) WT uses a unique identifier based on a pair of numbers encoded by Raman amplifiers into each service wavelength direction.

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

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

3. Which of the following statements best describes the output of the CLI command: show wavekey wtmonitor
1/6/LINE summary?

A) A list of all channels detected against the selected interface, including Wave Keys pair, channel status, expected and measured power, allowed deviation, and tolerance.
B) A list of all channels on this interface for which any Wave Keys pair is being received.
C) A list of all channels detected against the selected interface (in and out); it shows if a Wave Keys pair is expected, if a Wave Keys pair is received, and if the received Wave Keys pair is unexpected.
D) A list of the unexpected channels detected against the selected interface.

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

Solutions: