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Nokia 4A0-265 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: EPT Report Parameters and Power Commissioning Data | |
| Topic 2: Alarms, Conditions and Logs | |
| Topic 3: Transmission and Power Adjustment Troubleshooting Techniques | |
| Topic 4: Optical Signal Flow Through a Node | |
| Topic 5: Performance Monitoring and Loopbacks for Troubleshooting | |
| Topic 6: Wavelength Tracker | |
| Topic 7: Troubleshooting Fiber Cuts / Line Issues and Alarm Correlation | |
| Topic 8: Optical Transponder Configuration Troubleshooting | |
| Topic 9: Documentation and Support Information |
Nokia Optical Diagnostics and Troubleshooting Sample Questions:
Question #1
Which of the following statements about the alarm masking mechanism is TRUE?
A. The alarm masking mechanism always forwards masked alarms to an external Network Management System (NMS) for alarm correlation.
B. 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.
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.
Question #2
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. Gain Adjustment Exceeded Max Value (PWRMAXGAIN)
B. Amplifier Gain Tilt Adjustments Suspended (PWRTILTSUSP)
C. Invalid topology (PRCDRERR-TOPO)
D. Power Adjustment Failure (PWRADJFAIL)
Question #3
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 PM data to determine if the problem is intermittent.
B. Perform network power traces to attempt to determine the point of power loss.
C. Review EPT design for calculated span loss.
D. Monitor amplifier total power in/out to isolate the direction of a possible cut.
Question #4
Suppose a unidirectional amplifier has been plugged into slot 1/13. Which command should the user enter to retrieve the OSC pluggable module type?
A. show interface 1/13/OSC
B. show interface 1/13/OSCSFP
C. show interface 1/13/OSC detail
D. show interface 1/13/OSCSFP detail
Solutions:
| Question #1 Answer: B | Question #2 Answer: B | Question #3 Answer: B | Question #4 Answer: D |
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