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Nokia 4A0-265 Exam Syllabus Topics:

SectionWeightObjectives
Troubleshooting Methodologies30%- Alarm and condition interpretation
  • 1. Fault isolation procedures
    • 2. Channel and line interface issues
      - Common optical impairments
      • 1. Non-linear effects, attenuation, dispersion
        • 2. Power balancing and adjustment
          Transponder and System Fault Resolution20%- Optical transponder faults
          • 1. Protection switching behavior
            • 2. Line and client-side issues
              - Service restoration
              • 1. Using Nokia support resources
                • 2. Trail and connection recovery
                  Optical Network Architecture and Signal Flow25%- Amplifier configurations
                  • 1. Ingress/egress amplification schemes
                    • 2. Unidirectional/bidirectional amplification
                      - 1830 PSS node architecture
                      • 1. Optical signal path and power budget
                        • 2. FOADM, ROADM, CDC-F structures
                          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

                                  Nokia Optical Diagnostics and Troubleshooting Sample Questions:

                                  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 C only
                                  B) Node A only
                                  C) Node A and Node B
                                  D) Node B only


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

                                  A) Optical power levels measured for multiple wavelengths against a specific interface.
                                  B) The average optical power levels measured for multiple wavelengths throughout their shared optical path.
                                  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.


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

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


                                  4. Which of the following statements about using Nokia product documentation in the troubleshooting process is TRUE?

                                  A) The Customer Release Notes (CRNs) document collects documented solved known issues, new issues discovered after the product software has been released.as well as software upgrade procedures and firmware details.
                                  B) Before investigating a problem it is important to check the User Provisioning Guide (UPG) if a possible issue has already been acknowledged by the Product Unit (PU).
                                  C) Before investigating a problem it is important to check the Engineering and Planning Tool User Guide (EPTUG) if a possible issue has already been acknowledged by the Product Unit (PU).
                                  D) The Customer Release Notes (CRNs) provides instructions to perform the automated provisioning, commissioning, and power balancing functions in a customer network based on the Nokia 1830 PS5 platform.


                                  Solutions:

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

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