Free PDF Updated Nokia - 4A0-205 - Valid Nokia Optical Networking Fundamentals Exam Pattern

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Nokia 4A0-205 Exam Syllabus Topics:

SectionObjectives
WDM and Optical Transport Technologies- Wavelength Division Multiplexing (WDM)
  • 1. CWDM vs DWDM principles
    • 2. Channel spacing and grid concepts
      - Optical Transport Network (OTN)
      • 1. OTN framing and multiplexing basics
        • 2. Mapping and encapsulation concepts
          Fundamentals of Optical Networking- Optical fiber principles and transmission characteristics
          • 1. Attenuation and dispersion concepts
            • 2. Fiber types and structure
              • 3. Optical signal behavior in fiber
                - Optical networking components
                • 1. Optical amplifiers (EDFA)
                  • 2. Passive optical components (splitters, couplers)
                    • 3. Transmitters and receivers
                      Optical Network Architectures and Systems- Performance and impairments
                      • 1. Noise and OSNR basics
                        • 2. Chromatic dispersion and nonlinear effects
                          - Metro and long-haul optical networks
                          • 1. Network topology concepts
                            • 2. ROADM and switching principles

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                              Nokia Optical Networking Fundamentals Sample Questions (Q39-Q44):

                              NEW QUESTION # 39
                              Which of the following applications is related to Wavelength Tracker tool?

                              Answer: D

                              Explanation:
                              Tracking the protection path for a specific wavelength. The Wavelength Tracker tool is used to track the protection path of a specific wavelength, allowing the user to quickly identify any issues that may arise and take corrective action.
                              Wavelength Tracker tool is a feature used to monitor and track the protection path for a specific wavelength in an optical network. It can also be used to monitor and verify the working state of the protection path, and to detect and troubleshoot protection switch events. The Wavelength Tracker tool can be used to monitor the protection path for a specific wavelength, and it can also be used to trace the end-to-end path of a wavelength through the network. This tool is typically used by network operators to monitor and troubleshoot wavelength-level issues in the network, such as protection switch events or wavelength-level performance issues.


                              NEW QUESTION # 40
                              What is the function of a pre-amplifier in an optical network?

                              Answer: B

                              Explanation:
                              A pre-amplifier is an optical amplifier that is used to boost the power of the received optical signal before it is detected by the receiver in an optical communication system. This is done to overcome the loss of power that occurs as the signal travels through the optical fiber and to ensure that the receiver can detect the signal. The pre-amplification stage is typically located close to the receiver in order to minimize the distance that the signal has to travel between the amplifier and the receiver, which helps to reduce the noise and distortion in the signal.


                              NEW QUESTION # 41
                              Which application generates the commissioning file(s)?

                              Answer: D

                              Explanation:
                              The CPB (Commissioning Parameter Builder) application is used to generate the commissioning files for a Nokia 1830 Photonic Service Switch (PSS-1). The CPB application allows the user to create multiple commissioning files [1][2], which can be used to configure a variety of different features on the device. The CPB also allows users to view, edit and modify the commissioning files before they are uploaded to the device. The NSP (Network Service Platform) and EPT (Element Provisioning Tool) are used to manage the devices and network elements within the network, but do not generate commissioning files.


                              NEW QUESTION # 42
                              Which statement is correct about the NFM-T network map?

                              Answer: D

                              Explanation:
                              The NFM-T network map provides a graphical view of the network with different colors used to represent each node, physical connection, and active alarm. It allows the user to quickly identify any issues in the network and provides context sensitive navigation.


                              NEW QUESTION # 43
                              In which of the following forms does the TTI byte provide information on network elements?

                              Answer: A

                              Explanation:
                              Comprehensive and Detailed Explanation From Nokia Optical Networking Fundamentals:
                              In the Optical Transport Network (OTN) hierarchy, the TTI (Trail Trace Identifier) is a 64-byte overhead signal used to ensure that the source and destination of a path are correctly connected. It is part of the overhead in the OTU (Optical Transport Unit) and ODU (Optical Data Unit) layers. The TTI provides a mechanism for "path trace" to prevent misconnections. It specifically carries the SAPI (Source Access Point Identifier) and the DAPI (Destination Access Point Identifier).
                              These identifiers are strings that uniquely identify the source and destination ports. By comparing the "Expected SAPI/DAPI" configured on a port with the "Received SAPI/DAPI" actually coming in over the fiber, the Nokia 1830 PSS can detect fiber patching errors or cross-connect mistakes. If there is a mismatch, the system can trigger a TIM (Trace Identifier Mismatch) alarm and potentially squelch the traffic to prevent data from being delivered to the wrong customer. This is a Layer 1 (OTN) function and is entirely independent of Layer 2 MAC addresses or Layer 3 IP addresses used by the management system for DCN (Data Communication Network) connectivity.


                              NEW QUESTION # 44
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