Nokia 4A0-265 : Nokia Optical Diagnostics and Troubleshooting

  • Exam Code: 4A0-265
  • Exam Name: Nokia Optical Diagnostics and Troubleshooting
  • Updated: Sep 12, 2026
  • Q & A: 40 Questions and Answers

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Nokia 4A0-265 Exam Syllabus Topics:
SectionObjectives
Alarms, Conditions and Logs
EPT Report Parameters and Power Commissioning Data
Optical Transponder Configuration Troubleshooting
Optical Signal Flow Through a Node
Performance Monitoring and Loopbacks for Troubleshooting
Documentation and Support Information
Transmission and Power Adjustment Troubleshooting Techniques
Troubleshooting Fiber Cuts / Line Issues and Alarm Correlation
Wavelength Tracker
Nokia Optical Diagnostics and Troubleshooting Sample Questions:
Question #1

Consider the exhibit. What do the different colored green columns indicate?

  • A. The average optical power levels measured for multiple wavelengths throughout their shared optical path.
  • B. Optical power levels measured for multiple wavelengths against a specific interface.
  • C. Optical power levels measured at different interfaces throughout the optical path of a single wavelength.
  • D. Optical power levels measured multiple times against a specific interface, at 24-hour intervals for the same wavelength.
Reveal Solution  Discussion  0

Correct Answer: C  🗳️

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Question #2

Consider the exhibit which shows an EPT Power Management Report referring to an ingress amplifier. What is the available output optical power range?

  • A. 0.56 to 1.14 dB
  • B. -0.02 to 1.14 dB
  • C. 0.56 to 1.72 dB
  • D. -0.6 to 1.72 dB
Reveal Solution  Discussion  0

Correct Answer: D  🗳️

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Question #3

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

  • A. WT uses a unique identifier based on a pair of numbers encoded by Optical Transponders OTs) into each service wavelength direction.
  • B. Wave Keys are originated by optical amplifiers.
  • C. WT uses a unique identifier based on a pair of numbers encoded by Raman amplifiers into each service wavelength direction.
  • D. WT is compatible with other vendor domains, but the user must make sure that Wave Keys are unique on the crossed domains.
Reveal Solution  Discussion  0

Correct Answer: A  🗳️

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Question #4

Consider the exhibit. Given the following power readings, what is the calculated span loss from Node A to Node B?

  • A. 5.0 dB
  • B. 8.0 dB
  • C. 10.0 dB
  • D. 2.0 dB
Reveal Solution  Discussion  0

Correct Answer: C  🗳️

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