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Nokia NRN-522 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Performance Monitoring and Optimization	20%	- Performance analysis and optimization 1. Counter and trace analysis 2. Parameter tuning for better performance - Key performance indicators (KPIs) 1. Throughput and latency metrics 2. Accessibility, retainability, mobility KPIs
Topic 2: Fault Management and Troubleshooting	25%	- Common issues and solutions 1. Connection and access problems 2. Interference and coverage issues - Alarm and fault handling 1. Fault isolation and resolution steps 2. Alarm classification and interpretation
Topic 3: Network Configuration and Management	25%	- Software management and upgrades 1. Backup and restore procedures 2. Software download, activation and rollback - Parameter management and configuration 1. Cell, carrier and beam configuration 2. Mobility and handover parameters
Topic 4: Security and Compliance	10%	- Security features and procedures 1. Access control and authentication 2. Data integrity and encryption
Topic 5: 5G RAN Architecture and Fundamentals	20%	- 5G RAN logical and physical architecture 1. NSA and SA deployment options 2. gNB functions and components - Protocol stack and interfaces 1. F1, E1, Xn, NG interfaces 2. User plane and control plane protocols

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Nokia 5G RAN Network Operations Expert Sample Questions (Q97-Q102):

NEW QUESTION # 97
A NOC team is investigating a degradation in E-RAB / QoS flow setup success rate for a specific gNB.
Which approach is MOST effective for identifying the root cause?

A. Assuming the cause is always the subscribers' devices without checking network-side data
B. Correlating the KPI degradation with active alarms, recent configuration changes, and relevant counters (e.g., resource congestion, transport, signaling) for that gNB during the affected period
C. Reviewing only high-level marketing performance summaries
D. Restarting NetAct entirely without further analysis

Answer: B

Explanation:
Investigating a degradation in E-RAB or 5G QoS flow setup success rate for a specific gNB is most effectively approached by correlating multiple data sources covering the affected time period: checking active alarms on that gNB (hardware, transport, or signaling faults), reviewing the configuration management audit trail for any recent parameter change that coincided with the degradation, and examining relevant performance counters such as resource availability/congestion indicators, transport interface statistics, and signaling success/failure counts. This multi-source correlation identifies whether the degradation stems from a hardware fault, a configuration error, a capacity constraint, or a transport issue, enabling targeted remediation. Reviewing only high-level summary reports lacks the technical granularity required. Restarting NetAct is a drastic, unfocused action unrelated to a single gNB's issue and risks disrupting network-wide monitoring. Assuming the cause is always subscriber devices, without first checking network-side data, skips the most relevant and controllable areas of investigation.

NEW QUESTION # 98
A NOC engineer 'acknowledges' an active alarm in NetAct FM. What does this action signify?

A. The underlying fault has been automatically repaired
B. The affected base station will automatically reboot
C. The alarm record is permanently deleted from the system
D. The alarm has been seen and is being handled, helping avoid duplicated investigation by other team members

Answer: D

Explanation:
Acknowledging an alarm in NetAct FM is an administrative action that marks the alarm as having been seen and taken ownership of by an engineer, without changing the underlying fault condition itself. In a NOC environment where multiple engineers or shifts monitor shared alarm lists, acknowledgement communicates that someone is already aware of and working on the issue, helping to avoid duplicated troubleshooting effort and providing a basic accountability trail for follow-up. It does not automatically resolve or repair the underlying fault - the alarm will only clear once the actual condition causing it is resolved, whether automatically by the network recovering or through engineer intervention. Acknowledgement also does not cause the base station to reboot, and acknowledged alarms remain visible in the active list (not deleted) until the underlying condition clears, at which point they typically move to the alarm history.

NEW QUESTION # 99
What does the NR-ARFCN (NR Absolute Radio Frequency Channel Number) represent in a 5G cell's configuration?

A. The percentage of available PRBs currently in use by the cell
B. The number of active alarms currently reported by the cell
C. A unique identifier for the cell within the core network's subscriber database
D. A standardized numeric reference that identifies the specific carrier frequency on which the cell operates

Answer: D

NEW QUESTION # 100
A NOC engineer is trying to isolate whether a fault originates in the baseband processing unit or in an RF module of an AirScale BTS. What is a useful FIRST diagnostic step?

A. Check the status and alarm details of the interface (such as CPRI/eCPRI links) between the System Module and the RF unit
B. Immediately replace the antenna
C. Restart the entire NetAct management server
D. Increase transmit power to see if the fault changes

Answer: A

Explanation:
When isolating a fault between baseband processing units and RF modules, checking the status and alarm details of the interconnecting interface - typically a CPRI or eCPRI link in AirScale architectures - between the System Module and the Radio unit is a logical first step. Alarms or abnormal status on this link can quickly reveal whether the problem lies in the connection itself (such as a fiber/cable fault or configuration mismatch) or within one of the connected components. This follows the principle of checking interfaces and boundaries before assuming a specific component has failed, avoiding unnecessary or premature hardware replacement. Replacing the antenna skips this diagnostic step entirely and risks an unwarranted field action.
Restarting NetAct is a network-wide action inappropriate for a single-site fault. Increasing transmit power to
'test' a suspected hardware issue is not a valid diagnostic method and could create interference.

NEW QUESTION # 101
What is the role of the Managed Object Model (MOM) in Nokia's RAN configuration management framework?

A. It defines the physical cabling diagram for a base station site
B. It is a list of all active and historical alarms for a network element
C. It defines the structured hierarchy of configurable objects (such as network elements, cells, and their parameters) that configuration management tools operate on
D. It is the software package used to upgrade base station firmware

Answer: C

Explanation:
The Managed Object Model (MOM) defines the structured, hierarchical representation of all configurable entities within the network - such as network elements, their subordinate functional units, cells, and the individual parameters associated with each object - along with the relationships between them. Configuration management tools, including NetAct CM applications, rely on the MOM to know what objects exist, what parameters each object type supports, valid value ranges, and how objects relate to one another (for example, a cell object existing as a child of a baseband equipment object). Understanding the MOM is important for NOC engineers performing configuration changes, since it determines where a given parameter resides within the object hierarchy and what other objects or parameters might be affected by a change. The MOM is a configuration management construct and is unrelated to physical cabling documentation, alarm history (a fault management function), or software upgrade packages (a software lifecycle management function).

NEW QUESTION # 102
......

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