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Nokia NRN-522 exam is an online, proctored exam that consists of 60 multiple-choice questions. Candidates are given 90 minutes to complete the exam, and they must achieve a passing score of at least 70% to earn the certification. NRN-522 Exam is designed to be challenging, and it covers a wide range of topics related to 5G network operations.
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Nokia NRN-522, also known as the Nokia 5G RAN Network Operations Expert Exam, is a comprehensive certification exam offered by Nokia that focuses on the planning, deployment, and maintenance of 5G Radio Access Networks (RAN). Nokia 5G RAN Network Operations Expert certification is designed for network professionals who have experience in managing and operating advanced telecommunications networks and want to validate their knowledge and skills in the 5G space.
NEW QUESTION # 111
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: C
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 # 112
After a field engineer completes a baseband module replacement and confirms physical installation is complete, which set of remote checks should the NOC engineer perform to verify successful restoration of service?
Answer: B
Explanation:
After a baseband module replacement, comprehensive remote verification is essential to confirm the site has been fully restored to normal operation before the maintenance activity is considered complete. This includes unlocking the affected cell(s) and confirming they successfully return to an in-service state without generating new critical or major alarms (beyond any expected transient alarms during the restart process), verifying that the CPRI or eCPRI links between the new baseband module and the connected RF units are established and reporting normal status (confirming correct physical connectivity and configuration), and monitoring relevant KPIs over a short period to confirm they return to levels consistent with the site's historical baseline, indicating the cell is performing as expected. Relying on indicator lights alone, simply confirming the field engineer's departure, or expecting a PCI change (which would not normally occur as a result of a hardware replacement) would all fail to provide meaningful assurance that the site is fully operational.
NEW QUESTION # 113
A NOC engineer is considering performing a remote factory reset on a base station as a troubleshooting step for a persistent issue. What is the most significant risk of this action if performed without proper preparation?
Answer: D
Explanation:
A factory reset typically returns a network element to its default, out-of-the-box configuration state, which generally means erasing the unit's current operational configuration - including cell parameters, neighbor relations, and other site-specific provisioning. If performed without first ensuring a verified, complete configuration backup is available, this action can leave the site without the configuration needed to resume normal operation, requiring a time-consuming restoration from backup or, in the worst case, a full re- commissioning process involving significant manual effort. Given this risk, a factory reset is generally considered a last-resort troubleshooting action, used only when less drastic remote troubleshooting steps have been exhausted, and only after confirming that a usable backup exists and that the operational impact (likely requiring an extended outage for the affected cells) is acceptable and properly scheduled. The action does not automatically create its own backup, nor is its impact limited to cosmetic indicators - it directly affects the unit's operational state.
NEW QUESTION # 114
Before applying a significant parameter change to a live production cell, what best practice should a NOC engineer follow regarding the cell's current configuration?
Answer: D
Explanation:
Taking a configuration backup or snapshot of the current parameter settings before applying a significant change is a fundamental change management best practice. If the new configuration causes unexpected behavior - such as degraded KPIs, connectivity issues, or unintended interactions with other parameters - having a known-good baseline allows the engineer to quickly roll back to the previous configuration, minimizing service impact and downtime while the root cause is investigated. While some configuration management tools may offer change history or versioning features, relying solely on this without an explicit pre-change backup is risky, and the assumption that changes are always automatically and fully reversible is incorrect. Deleting the existing configuration before applying a new one is highly disruptive and would cause an outage. Disabling alarm reporting during a change is dangerous, as it would prevent the NOC from detecting genuine problems introduced by the change itself, undermining the very monitoring needed to assess the change's impact.
NEW QUESTION # 115
Why is it important for NOC personnel to establish a KPI baseline for each cell or site before evaluating whether current performance indicates a problem?
Answer: D
Explanation:
Establishing a KPI baseline for each cell or site - representing typical performance under normal operating conditions, accounting for factors such as time-of-day traffic patterns, geography, and cell configuration - provides the reference point against which current performance can be meaningfully compared. Without a baseline, it is difficult to tell whether an observed KPI value represents a genuine degradation requiring investigation, or simply normal variation for that particular cell. For example, a busy urban cell may normally operate with higher PRB utilization than a rural cell, so what is alarming for one cell may be entirely typical for another. Baselines support effective threshold setting for alerts, help prioritize investigation effort toward genuine anomalies, and are referenced continuously - not only during initial commissioning - whenever assessing whether performance has changed meaningfully. Baselines have no relationship to a cell's maximum transmit power, which is a separate RF configuration parameter.
NEW QUESTION # 116
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