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Nokia NRN-522 Exam Syllabus Topics:

SectionObjectives
5G RAN Systems and Fault Management- Software and configuration management
  • 1. Base station software management
    • 2. Configuration parameter updates in live networks
      - Alarm and fault handling
      • 1. Fault detection and diagnosis in RAN nodes
        • 2. Troubleshooting operational issues
          Network Operations in 5G RAN- Operations Center procedures
          • 1. Support network operation center workflows
            • 2. Coordinate with technical support teams for issue resolution
              - Remote operation of 5G Radio Access Network
              • 1. Apply standard parameter configuration changes
                • 2. Retrieve faults and alarms
                  • 3. Manage base station software lifecycle
                    • 4. Connect to Nokia 5G RAN products and solutions

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                      Nokia 5G RAN Network Operations Expert Sample Questions (Q58-Q63):

                      NEW QUESTION # 58
                      Which statement correctly describes how OandM (management) traffic and user-plane traffic (e.g., NG-U/N3) are typically handled on the transport network connecting an AirScale BTS?

                      Answer: B

                      Explanation:
                      For security, isolation, and quality-of-service reasons, AirScale base stations typically separate Operations and Maintenance (O and M) traffic from user-plane traffic (such as NG-U/N3 in 5G or S1-U in 4G) using distinct VLANs and/or IP addressing on the transport network. This separation ensures that configuration commands, alarm reporting, and software transfers travel on a logically isolated path from subscriber data, reducing the risk that issues or attacks affecting the user-plane path could impact management connectivity, and allowing each traffic type to be independently prioritized and monitored. It is incorrect that they must share identical addressing, that O and M cannot use IP (modern AirScale O and M is IP-based and typically carried over the same physical transport with logical separation), or that user-plane traffic configuration is unrelated to transport - transport interface parameters configured via NetAct CM directly determine how user-plane traffic is carried.


                      NEW QUESTION # 59
                      After a field engineer physically replaces a Remote Electrical Tilt (RET) antenna actuator, what remote verification should the NOC engineer perform to confirm the new unit is properly integrated?

                      Answer: A

                      Explanation:
                      Remote Electrical Tilt (RET) units are Antenna Line Devices (ALDs) that communicate with the base station over the Antenna Interface Standards Group (AISG) bus. After a physical RET replacement, the appropriate remote verification is to confirm that the new device is discovered on the AISG bus, that it is communicating correctly with the base station's controller, and that its current tilt position can be read remotely and that tilt adjustment commands are correctly applied and reflected back. This confirms both the physical connectivity (cabling/bus communication) and functional operability (motor and position feedback) of the replaced unit.
                      The unit's color is irrelevant to functional verification, and while serial number changes are expected with replacement (a new unit will naturally have a different serial number, which should simply be recorded for inventory purposes), it is not itself a functional check. NR-ARFCN relates to radio carrier frequency configuration and has no relationship to RET device verification.


                      NEW QUESTION # 60
                      Which alarm severity level generally requires the MOST urgent NOC response under standard SLA-based prioritization?

                      Answer: D

                      Explanation:
                      In the standard alarm severity model used across telecom Fault Management systems, including NetAct, Critical alarms represent the highest severity, typically indicating a total or near-total loss of service, capability, or capacity with immediate and significant impact on subscribers - for example, a complete cell or site outage. Because of this severe impact, Critical alarms require the most urgent NOC response and are governed by the tightest response and resolution timeframes among all severity levels in most operational SLAs. Major alarms indicate serious degradation requiring prompt, though slightly less immediate, action.
                      Minor alarms represent non-service-affecting issues that should be addressed to prevent escalation, and Warning alarms are typically informational or preventive, requiring the least urgency. Correctly prioritizing Critical alarms above all others ensures NOC resources focus first on the issues with the greatest impact on network availability and customer experience.


                      NEW QUESTION # 61
                      Which AirScale management tool allows an engineer to connect directly to a single base station for local-level configuration viewing and diagnostics, as opposed to network-wide centralized management?

                      Answer: B

                      Explanation:
                      The BTS Site Manager, also referred to as the local Element Manager, is the tool used to connect directly to an individual AirScale base station to view its local configuration, hardware inventory, logs, and run element- level diagnostics. It is typically used when an engineer needs granular, site-specific information that may not be fully visible through the centralized system, or when NetAct connectivity to the site is impaired. NetAct CM Editor is used for network-wide configuration management of many sites from the central OSS, NetAct PM Reports aggregates performance counters across the network, and the SON Network Optimizer automates parameter tuning across multiple cells. Because the question specifically asks about direct, single-element access for local diagnostics rather than network-wide operations, the BTS Site Manager is the correct answer, complementing NetAct in a complete remote operations toolkit.


                      NEW QUESTION # 62
                      An operator is considering reducing the PM Result Output Period (ROP) for a set of cells from 15 minutes to
                      1 minute to enable near real-time troubleshooting. What is the most significant operational trade-off of this change?

                      Answer: D

                      Explanation:
                      Reducing the Result Output Period increases the frequency at which performance counters are collected, processed, and stored, which proportionally increases the volume of measurement data generated by each network element. Moving from a 15-minute to a 1-minute ROP, for example, would generate roughly fifteen times more data points over the same time period. This places significantly higher demand on the file transfer, processing, and storage capacity of NetAct and any downstream analytics systems, and can also increase signaling and processing load on the base stations themselves. While finer granularity can be valuable for short-term, targeted troubleshooting of a specific cell during an active investigation, it is not typically sustainable as a network-wide, long-term configuration. KPI formulas remain valid regardless of ROP, alarm notifications are a separate mechanism unaffected by PM ROP settings, and historical trending remains possible - it simply involves more granular data points.


                      NEW QUESTION # 63
                      ......

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