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Nokia NRN-522 exam is designed for individuals who want to become experts in Nokia 5G RAN network operations. NRN-522 exam tests the candidate’s ability to understand and manage the Nokia 5G RAN network, including the planning, optimization, and troubleshooting of the network. NRN-522 Exam is intended for network engineers, network architects, and other IT professionals who work with Nokia 5G RAN network.
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Nokia NRN-522 exam covers a wide range of topics related to the Nokia 5G RAN network, including network architecture, network planning, and optimization, network element management, network security, and troubleshooting. Candidates are expected to have a thorough understanding of the 5G RAN network and its various components, including base stations, radio access network (RAN), transport network, and core network.
Nokia NRN-522 Exam covers a wide range of topics related to 5G RAN network operations. NRN-522 exam focuses on areas such as network planning, configuration, optimization, and troubleshooting. Candidates will be tested on their ability to analyze network performance metrics and identify and resolve issues that may arise in a 5G RAN network. NRN-522 exam also covers topics related to network security and compliance.
NEW QUESTION # 22
After a field engineer installs a brand-new RET unit (not a like-for-like replacement, but a new addition to the antenna line) and connects it to the AISG bus, what initial remote action does the NOC engineer typically need to perform to bring the device under management?
Answer: C
Explanation:
When a new Antenna Line Device such as a RET unit is physically connected to the AISG bus for the first time, it is not automatically recognized and managed by the base station's O and M system without an initial discovery step. The NOC engineer typically needs to initiate an AISG device scan (discovery process), which queries the bus for connected devices and identifies the new RET unit, retrieving its device information. Once discovered, the device needs to be configured within the management system - associating it with the correct antenna/sector and ensuring its parameters (such as tilt range limits) are properly set - so that it becomes a manageable object that can be monitored for status and controlled for tilt adjustments going forward. This process is entirely software/configuration-based and remote; it does not involve rewriting the base station's overall software image, modifying unrelated identifiers like Tracking Area Code, or any physical relocation of equipment.
NEW QUESTION # 23
A 'Loss of Synchronization Reference' alarm appears on a 5G cell. Which input to the BTS is this alarm most directly associated with?
Answer: A
Explanation:
5G base stations require accurate frequency, and for many configurations (especially TDD operation and features like carrier aggregation) phase/time synchronization, typically derived from a GNSS receiver such as GPS or from a network-distributed timing source such as Synchronous Ethernet or PTP/IEEE 1588 over the transport network. A 'Loss of Synchronization Reference' alarm indicates the BTS has lost access to its timing source. This can lead to degraded performance and, in TDD deployments, can cause uplink/downlink timing misalignment between neighboring cells (interference), and may force the cell out of service if synchronization cannot be maintained. The correct troubleshooting focus is therefore the GNSS antenna
/receiver, related cabling, satellite visibility/obstructions, or the alternative network-based synchronization path - not neighbor relation configuration, handover KPIs, or NetAct account credentials, none of which relate to the BTS's timing reference source.
NEW QUESTION # 24
During a remote piloting session, what communication practice is most important for the NOC engineer and field engineer to follow to ensure tasks are completed safely and correctly?
Answer: C
Explanation:
Effective remote piloting depends on clear, step-by-step communication where each action - whether performed by the field engineer physically or the NOC engineer remotely - is confirmed as complete before the next dependent step proceeds. This sequential confirmation approach ensures that both parties maintain an accurate, shared understanding of the site's current state at every point in the procedure, which is critical for both safety (for example, confirming a cell is locked before physical work begins near an antenna) and technical correctness (for example, confirming a physical connection has been made before the NOC engineer attempts to verify it remotely). Providing all instructions upfront without ongoing confirmation risks steps being missed, performed out of order, or performed before prerequisite conditions are met. Relying solely on non-real-time communication such as email is impractical for time-sensitive coordination, and allowing the field engineer to proceed entirely independently removes the collaborative verification that makes remote piloting effective and safe.
NEW QUESTION # 25
Which alarm severity level generally requires the MOST urgent NOC response under standard SLA-based prioritization?
Answer: B
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 # 26
An AirScale base station simultaneously raises a 'Cell Out of Service' alarm and an 'RF unit communication failure' alarm. How should a NOC engineer typically interpret this combination using alarm correlation principles?
Answer: C
Explanation:
Alarm correlation in Fault Management helps distinguish a root-cause alarm from symptom (consequent) alarms that appear together for a single underlying problem. In this scenario, an RF unit communication failure indicates a problem with the radio hardware or its link to the baseband, which directly prevents the cell served by that RF unit from operating - this generates the Cell Out of Service alarm as a direct consequence. NOC procedure is to focus remediation on the root-cause alarm (the RF unit communication failure); resolving it should automatically clear the dependent Cell Out of Service alarm. Treating both as separate, unrelated faults wastes troubleshooting effort on what is really a single underlying issue. NetAct can display many simultaneous alarms per element, and a Cell Out of Service alarm is itself a symptom, not a cause of hardware failure.
NEW QUESTION # 27
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