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Nokia 4A0-265 Exam Syllabus Topics:

SectionObjectives
Maintenance and Optimization- Preventive maintenance
  • 1. Degradation detection
    • 2. Performance trend analysis
      - Network optimization techniques
      • 1. Signal quality optimization
        • 2. Capacity and performance tuning
          Optical Equipment and System Operation- System configuration and monitoring
          • 1. Provisioning and service activation basics
            • 2. Network management system usage
              - Nokia optical platform components
              • 1. Transponders and muxponders
                • 2. ROADM and optical amplifiers
                  Network Diagnostics and Troubleshooting- Troubleshooting procedures
                  • 1. Root cause analysis techniques
                    • 2. Layered fault isolation approach
                      - Fault detection methods
                      • 1. Performance monitoring indicators
                        • 2. Alarm interpretation and correlation
                          Optical Network Fundamentals- DWDM/OTN basics
                          • 1. Optical transport network architecture overview
                            • 2. Wavelength division multiplexing principles
                              - Optical transmission principles
                              • 1. Signal attenuation and dispersion concepts
                                • 2. Light propagation and fiber characteristics

                                  Nokia Optical Diagnostics and Troubleshooting Sample Questions:

                                  1. Which of the following statements best describes the output of the CLI command: show wavekey wtmonitor
                                  1/6/LINE summary?

                                  A) A list of all channels detected against the selected interface (in and out); it shows if a Wave Keys pair is expected, if a Wave Keys pair is received, and if the received Wave Keys pair is unexpected.
                                  B) A list of the unexpected channels detected against the selected interface.
                                  C) A list of all channels on this interface for which any Wave Keys pair is being received.
                                  D) A list of all channels detected against the selected interface, including Wave Keys pair, channel status, expected and measured power, allowed deviation, and tolerance.


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

                                  A) Wave Keys are originated by optical amplifiers.
                                  B) WT uses a unique identifier based on a pair of numbers encoded by Optical Transponders OTs) into each service wavelength direction.
                                  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.


                                  3. Suppose a network operator needs to configure the 10GbE client interface 1/7/C1 with a GFP-F encapsulation mode. Which command should be used?

                                  A) config interface 1/7/C1 tenGige encmode gfp-f
                                  B) config encmode interface 1/7/C1 10client gfp-f
                                  C) config interface 1/7/C1 encmode 10client gfp-f
                                  D) config encmode interface 1/7/C1 tenGige gfp-f


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

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


                                  Solutions:

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

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