Nokia 4A0-265 Actual Free Exam Questions & Community Discussion

Exam Code/Number: 4A0-265
Exam Name/Title: Nokia Optical Diagnostics and Troubleshooting
Certification Provider: Nokia
Corresponding Certification: Nokia Optical Network Services Expert

Exam Questions: 40
Updated On: Jul 11, 2026

Question #9

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

A. Optical power levels measured at different interfaces throughout the optical path of a single wavelength.

B. Optical power levels measured multiple times against a specific interface, at 24-hour intervals for the same wavelength.

C. The average optical power levels measured for multiple wavelengths throughout their shared optical path.

D. Optical power levels measured for multiple wavelengths against a specific interface.

Discussion 0

Correct Answer: A Vote an answer

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Question #10

Which of the following correctly describes how a unidirectional amplification stage works?

A. * Incoming optical signals are boosted by the ingress amplifier.
* Outgoing optical signals pass through the ingress amplifier but are not boosted.

B. * Incoming optical signals pass through the ingress amplifier but are not boosted.
* Outgoing optical signals are boosted by the ingress amplifier.

C. * Incoming optical signals are boosted by the ingress amplifier.
* Outgoing optical signals are also boosted by the ingress amplifier.

D. * Incoming optical signals are boosted by the ingress amplifier.
* Outgoing optical signals do not pass through the ingress amplifier.

Discussion 0

Correct Answer: D Vote an answer

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Question #11

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

A. -0.02 to 1.14 dB

B. 0.56 to 1.72 dB

C. 0.56 to 1.14 dB

D. -0.6 to 1.72 dB

Discussion 0

Correct Answer: D Vote an answer

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Question #12

Which of the following Performance Measurement (PM) type is NOT typically retrieved at an Optical Transponder (OT) line interface?

A. Ethernet collision counters

B. Optical Power Received (OPR)

C. Digital Wrapper (DW)

D. Forward Error Correction - Errors Counted (FEC-EC)

Discussion 0

Correct Answer: A Vote an answer

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