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Nokia 4A0-265 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Transponder and System Fault Resolution | 20% | - Service restoration
|
| Optical Diagnostics and Monitoring Tools | 25% | - Performance Monitoring (PM) data analysis
|
| Troubleshooting Methodologies | 30% | - Alarm and condition interpretation
|
| Optical Network Architecture and Signal Flow | 25% | - 1830 PSS node architecture
|
Nokia Optical Diagnostics and Troubleshooting Sample Questions:
Question 1
Consider the exhibit. A single directional fiber cut is occurring between two amplifiers in bidirectional configuration. Which node(s) will report a "LD Input LOS" alarm?
A. Node A only
B. Node B only
C. Node A and Node B
D. Node C only
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. Invalid topology (PRCDRERR-TOPO)
B. Gain Adjustment Exceeded Max Value (PWRMAXGAIN)
C. Amplifier Gain Tilt Adjustments Suspended (PWRTILTSUSP)
D. Power Adjustment Failure (PWRADJFAIL)
Question 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. A Power adjustments action will fail on the local node.
B. A "Data Link Down" alarm will raise on the adjacent node.
C. Traffic will pass between the local and adjacent node.
D. No OSC-related alarms will raise on the local node.
Question 4
Consider the exhibit. What do the different colored green columns indicate?
A. Optical power levels measured for multiple wavelengths against a specific interface.
B. Optical power levels measured multiple times against a specific interface, at 24-hour intervals for the same wavelength.
C. Optical power levels measured at different interfaces throughout the optical path of a single wavelength.
D. The average optical power levels measured for multiple wavelengths throughout their shared optical path.
Solutions:
| Question 1 Answer: B | Question 2 Answer: C | Question 3 Answer: D | Question 4 Answer: C |
