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Nokia NRN-522 Exam Syllabus Topics:

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

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                      Nokia 5G RAN Network Operations Expert Sample Questions (Q93-Q98):

                      NEW QUESTION # 93
                      What is the AISG bus used for in the context of antenna line device management?

                      Answer: D

                      Explanation:
                      The Antenna Interface Standards Group (AISG) bus is a standardized communication interface (typically layered over RS-485 and sometimes carried over the same coaxial feeder cable as the RF signal, using a technique that separates the control signal from the RF) that enables the base station's control unit to discover, communicate with, and control Antenna Line Devices (ALDs) mounted on or near the antenna - most commonly Remote Electrical Tilt (RET) actuators and Tower Mounted Amplifiers (TMAs). Through the AISG bus, the system can remotely query device status, read sensor data such as current tilt position, and send control commands such as tilt adjustments or TMA gain settings. This is entirely distinct from the CPRI
                      /eCPRI fiber links carrying baseband-to-RF digital radio signals, the O and M IP network connecting the site to centralized management systems like NetAct, or the DC power distribution supplying equipment - each of which serves a different, non-overlapping function within the site's overall infrastructure.


                      NEW QUESTION # 94
                      After completing a software upgrade and subsequent configuration adjustments at a site, why is it important for the NOC engineer to update the site's maintenance records and change documentation?

                      Answer: D

                      Explanation:
                      Maintaining accurate and current maintenance records and change documentation - detailing what changes were made, when they were performed, by whom, and the reasoning or ticket reference behind them - provides essential context for future operations. If an issue arises at the site days, weeks, or months later, having a clear record of recent changes allows engineers investigating the new issue to quickly identify whether it might be related to a recent software upgrade or configuration adjustment, significantly speeding up root-cause analysis. This documentation also supports configuration audits, compliance requirements, and knowledge transfer between team members or shifts, ensuring continuity even as different engineers interact with the site over time. While documentation does have value for regulatory and audit purposes, dismissing it as having no operational value is incorrect - it directly supports troubleshooting efficiency. Documentation itself does not trigger software downloads or determine technical parameters like PCI, which are governed by separate configuration and software lifecycle processes.


                      NEW QUESTION # 95
                      What is the purpose of a NetAct configuration/network audit tool in remote operations?

                      Answer: B

                      Explanation:
                      A NetAct configuration (network) audit tool compares the parameter values currently deployed on live network elements against a defined reference or baseline configuration - sometimes called a golden configuration or template - and reports any deviations or inconsistencies found. This is highly valuable for remote operations because it can detect unauthorized or accidental configuration changes, configuration drift following maintenance activities, or sites that failed to receive an intended bulk update correctly, all without requiring a physical site visit. It directly supports standard provisioning workflows by allowing engineers to confirm that planned configuration changes were applied correctly and consistently across all targeted base stations. The tool does not perform physical inspection of cabinets (a field activity), does not measure power consumption (handled by environmental/equipment monitoring functions), and is not used to produce marketing material - its scope is strictly configuration verification within the OAM domain.


                      NEW QUESTION # 96
                      Which KPI category do uplink and downlink packet loss rate counters primarily contribute to, and why are they operationally significant for a NOC team?

                      Answer: B

                      Explanation:
                      Packet loss rate counters fall under the Integrity KPI category, which focuses on the quality and reliability of service delivered to users during an active connection, as opposed to whether a connection can be established (Accessibility), maintained without dropping (Retainability), handed over successfully (Mobility), or whether the cell is operational at all (Availability). High packet loss directly degrades user experience for real-time applications such as voice, video, and gaming, and can also trigger retransmissions that further increase congestion and reduce effective throughput. For a NOC team, monitoring packet loss trends is operationally significant because sustained increases often correlate with transport network issues (such as congestion or errors on backhaul links), radio interference causing high error rates, or hardware degradation. Identifying and addressing rising packet loss early helps prevent broader service quality complaints and supports proactive maintenance before the issue escalates into accessibility or retainability problems.


                      NEW QUESTION # 97
                      What is the function of cell reselection priority parameters configured for idle-mode UEs across different frequency layers (e.g., 5G vs. 4G, or different 5G bands)?

                      Answer: B

                      Explanation:
                      Cell reselection priority parameters are broadcast to idle-mode UEs and inform them how to prioritize different frequency layers (such as a 5G band versus an LTE band, or multiple 5G bands) when more than one suitable cell is available for camping. By assigning higher reselection priority to certain layers, an operator can influence idle-mode UE distribution - for example, encouraging UEs to camp on a 5G layer where available to ensure faster initial access to 5G services, or directing UEs away from a layer that is being prepared for maintenance. These parameters work alongside reselection thresholds and timers that prevent excessive reselection (ping-ponging) between layers. They do not control network registration eligibility (which depends on subscription and PLMN matching), transmit power limits (a separate RF parameter), or encryption key management (a security function handled through different mechanisms), but they play an important role in idle-mode load distribution and user experience from the moment a device wakes up.


                      NEW QUESTION # 98
                      ......

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