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Nokia 4A0-265 Exam Syllabus Topics:

Nokia Optical Diagnostics and Troubleshooting Sample Questions:

1. Which of the following is NOT a characteristic of an Optical Supervisory Channel Loss of Signal (OSC LOS) issue, in case that no "LD Input LOS" alarms are raised against the involved amplifiers?

A) A "Data Link Down" alarm is raised on the adjacent node.
B) An "Incoming SUPVY LOS" alarm is raised on the local node.
C) A "Power Adjustment Required" alarm is eventually raised on the local node.
D) Traffic does not pass between the local and adjacent nodes.

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

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

3. 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 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.
D) The alarm masking mechanism makes sure that alarms are always present on the downstream interfaces to facilitate the troubleshooting process.

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

Solutions: