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Nokia Optical Diagnostics and Troubleshooting Sample Questions:

1. Which of the following statements about the alarm masking mechanism is TRUE?

A) The alarm masking mechanism preserves the events' original time stamps, when related alarms gets hidden and then eventually displayed because of the mechanism itself, so that the user can still know the date and time of the original issue.
B) The alarm masking mechanism always forwards masked alarms to an external Network Management System (NMS) for alarm correlation.
C) The alarm masking mechanism makes sure that alarms are always present on the downstream interfaces to facilitate the troubleshooting process.
D) The alarm masking mechanism updates the events' original time stamps when it masks/shows alarms, so that when an alarm is not masked anymore, the user can see the updated date and time associated with the original issue.

2. Which of the following CLI commands displays a list of the expected and measured output power for the channels whose admin state is up?

A) show wavekey wtsource power
B) config wavekey power detail
C) show wavekey wtsource
D) config wavekey summary

3. A power adjustment has succeeded conditionally because of gain settings set to higher levels than expected by design. Which of the following alarms will raise?

A) Amplifier Gain Tilt Adjustments Suspended (PWRTILTSUSP)
B) Gain Adjustment Exceeded Max Value (PWRMAXGAIN)
C) Power Adjustment Failure (PWRADJFAIL)
D) Invalid topology (PRCDRERR-TOPO)

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

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

Solutions: