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4A0-265 exam dumps

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  • Exam Code: 4A0-265
  • Exam Name: Nokia Optical Diagnostics and Troubleshooting
  • No. of Questions: 40 Questions and Answers
  • Updated: Jul 19, 2026

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Nokia 4A0-265 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Troubleshooting Methodologies30%- Alarm and condition interpretation
  • 1. Channel and line interface issues
    • 2. Fault isolation procedures
      - Common optical impairments
      • 1. Power balancing and adjustment
        • 2. Non-linear effects, attenuation, dispersion
          Topic 2: Optical Network Architecture and Signal Flow25%- 1830 PSS node architecture
          • 1. Optical signal path and power budget
            • 2. FOADM, ROADM, CDC-F structures
              - Amplifier configurations
              • 1. Ingress/egress amplification schemes
                • 2. Unidirectional/bidirectional amplification
                  Topic 3: Transponder and System Fault Resolution20%- Optical transponder faults
                  • 1. Protection switching behavior
                    • 2. Line and client-side issues
                      - Service restoration
                      • 1. Trail and connection recovery
                        • 2. Using Nokia support resources
                          Topic 4: Optical Diagnostics and Monitoring Tools25%- Nokia management interfaces
                          • 1. Engineering and Planning Tool (EPT) reports
                            • 2. Web GUI and command-line access
                              - Performance Monitoring (PM) data analysis
                              • 1. Wavelength Tracker (WT) functionality
                                • 2. Optical power levels and OSNR measurement

                                  Nokia Optical Diagnostics and Troubleshooting Sample Questions:

                                  1. Which of the following statements about the "config powermgmt egress 1/2 adjust status command" is TRUE?

                                  A) The command enables power adjustment feature on the specified egress amplifier, as this feature Is always and only available at the egress amplification stage.
                                  B) The command displays commissioning status and WT decoder usage for the specified egress amplifiers only, as this feature is always and only done in the egress direction.
                                  C) The command enables power adjustment feature on the specified egress amplifier.
                                  D) The command displays the status of power adjustment on the specified egress amplifier.


                                  2. Which of the following issues can cause a "Loss too low" message to be displayed after a power adjustment has been provided?

                                  A) A defective WSS unit
                                  B) Unstable optical power levels
                                  C) An incorrect EPT network design
                                  D) A dirty fiber connector


                                  3. Which of the following commands is used to retrieve the total output power level?

                                  A) show interface am2125a 1/6/lineout
                                  B) show interface am2125a 1/6/lineout detail
                                  C) show interface am2125a 1/6/lineout wavekey
                                  D) show interface am212 5a 1/6/lineout pm


                                  4. Consider the exhibit.

                                  Which type of loopback is applied?

                                  A) Line port facility Ioopback
                                  B) Line port terminal Ioopback
                                  C) Client port facility loopback
                                  D) Client port terminal Ioopback


                                  Solutions:

                                  Question # 1
                                  Answer: C
                                  Question # 2
                                  Answer: B
                                  Question # 3
                                  Answer: B
                                  Question # 4
                                  Answer: D

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