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Nokia 4A0-265 Exam Syllabus Topics:

SectionWeightObjectives
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. Optical power levels and OSNR measurement
        • 2. Wavelength Tracker (WT) functionality
          Optical Network Architecture and Signal Flow25%- 1830 PSS node architecture
          • 1. FOADM, ROADM, CDC-F structures
            • 2. Optical signal path and power budget
              - Amplifier configurations
              • 1. Ingress/egress amplification schemes
                • 2. Unidirectional/bidirectional amplification
                  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
                          Transponder and System Fault Resolution20%- Service restoration
                          • 1. Using Nokia support resources
                            • 2. Trail and connection recovery
                              - Optical transponder faults
                              • 1. Line and client-side issues
                                • 2. Protection switching behavior

                                  Nokia Optical Diagnostics and Troubleshooting Sample Questions:

                                  1. Which of the following is a passive component in a CDC-F network configuration?

                                  A) WR20-TFM Wavelength Router
                                  B) IRDM20 Integrated ROADM
                                  C) MSH4-FSB Fiber Shuffle Module
                                  D) 130SCX10 Optical Transponder


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

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


                                  3. Consider the exhibit which shows part of an EPT Schematic View. Which number refers to the Wavelength Router (WR8-88) block?

                                  A) 4
                                  B) 1
                                  C) 3
                                  D) 5
                                  E) 2


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

                                  A) Forward Error Correction - Errors Counted (FEC-EC)
                                  B) Optical Power Received (OPR)
                                  C) Digital Wrapper (DW)
                                  D) Ethernet collision counters


                                  Solutions:

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

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