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Nokia NRN-522 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: 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 2: Network Configuration and Management	25%	- Software management and upgrades 1. Software download, activation and rollback 2. Backup and restore procedures - Parameter management and configuration 1. Mobility and handover parameters 2. Cell, carrier and beam configuration
Topic 3: Performance Monitoring and Optimization	20%	- Performance analysis and optimization 1. Parameter tuning for better performance 2. Counter and trace analysis - Key performance indicators (KPIs) 1. Accessibility, retainability, mobility KPIs 2. Throughput and latency metrics
Topic 4: Security and Compliance	10%	- Security features and procedures 1. Data integrity and encryption 2. Access control and authentication
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 (Q21-Q26):

NEW QUESTION # 21
When configuring NR-NR (5G-to-5G) neighbor relations to support mobility between two 5G cells operating on different frequency bands, which type of neighbor relation must be established?

A. An EN-DC relation, since any handover involving different frequencies requires LTE anchoring
B. No neighbor relation is required since inter-band handovers occur automatically without configuration
C. An intra-frequency neighbor relation only
D. An inter-frequency neighbor relation, including the appropriate frequency and measurement configuration for the target band

Answer: D

Explanation:
When two 5G NR cells operate on different frequency bands (or different carrier frequencies within the same band), mobility between them requires an inter-frequency neighbor relation to be configured. This relation must include the necessary frequency information identifying the target carrier, along with measurement configuration parameters that instruct the UE when and how to measure the candidate target frequency - since, unlike intra-frequency measurements, inter-frequency measurements typically require measurement gaps and are not performed continuously by the UE. An intra-frequency neighbor relation would only be appropriate if both cells operated on the same carrier frequency, which is not the case here. Inter-band 5G-to-
5G handovers are not automatic without configuration; the network must explicitly define the relation and measurement parameters to enable the UE to detect and report the target cell. EN-DC relations are specifically for LTE-NR dual connectivity scenarios and are unrelated to NR-NR mobility between two 5G cells.

NEW QUESTION # 22
What does the NR-ARFCN (NR Absolute Radio Frequency Channel Number) represent in a 5G cell's configuration?

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

Answer: B

NEW QUESTION # 23
A remote 5G site has redundant transport paths (primary and backup) providing OandM connectivity to NetAct. What is the main operational benefit of this redundancy?

A. It allows two mobile operators to share the same spectrum band
B. It removes the ongoing need for software updates
C. It doubles the radio coverage area of the cell
D. It allows continued remote management, alarm reporting, and visibility from the Operations Center if the primary transport path fails

Answer: D

Explanation:
Providing dual or redundant transport paths for O and M connectivity increases the resilience of remote management. If the primary backhaul link fails - for example, due to a fiber cut or a microwave link outage - the base station can continue to report alarms and performance data, and remain reachable for configuration changes via the secondary path, preserving the Operations Center's visibility and control without requiring a site visit purely to restore management connectivity. This redundancy specifically benefits the continuity of monitoring and management functions. It has no effect on a cell's radio coverage area, which depends on RF design parameters such as transmit power, antenna configuration, and frequency band, nor does it relate to spectrum-sharing arrangements between operators. It also does not eliminate the ongoing need for periodic software updates and patching, which remain a separate lifecycle management activity.

NEW QUESTION # 24
Within NetAct, which functional module is primarily responsible for planning, distributing, and activating software packages across base stations?

A. Configuration Management (CM)
B. Performance Management (PM)
C. Software Management (SWM)
D. Fault Management (FM)

Answer: C

Explanation:
The Software Management (SWM) module within NetAct is the centralized functional area responsible for the end-to-end software lifecycle of base stations and other network elements, including planning software deployment campaigns, distributing (downloading) software packages to target network elements, scheduling and triggering activation, and monitoring the success or failure of these operations across potentially large numbers of sites. This is distinct from Fault Management (FM), which handles alarms and fault conditions; Performance Management (PM), which handles KPI and counter-based performance data; and Configuration Management (CM), which handles parameter and configuration provisioning. While these modules may interact - for example, a software activation might generate alarms visible in FM, or a software change might necessitate subsequent configuration adjustments via CM - the core responsibility for managing software packages, versions, and activation campaigns rests specifically with SWM, making it the primary tool a NOC engineer would use for software lifecycle activities.

NEW QUESTION # 25
A NOC engineer reviewing UE measurement reports notices that two physically adjacent 5G cells are broadcasting the identical Physical Cell Identity (PCI), causing UEs to receive ambiguous reference signals.
What is this condition called, and what is the appropriate remote corrective action?

A. This is a normal configuration and requires no action, since PCI values can be safely reused on adjacent cells
B. This is a PCI collision, and it should be resolved by reassigning a unique PCI value to one of the conflicting cells
C. This is PCI confusion, and it should be resolved by adjusting the cells' reference signal power
D. This is PCI confusion, and the only remedy is to delete the neighbor relation between the two cells

Answer: B

Explanation:
A PCI collision occurs when two neighboring (geographically adjacent or mutually visible) cells are configured with the same Physical Cell Identity, causing UEs to be unable to reliably distinguish between them based on their synchronization and reference signals. This leads to degraded reference signal measurements, failed handovers, and potential interference between the two cells' signals. This is distinct from PCI confusion, where two non-adjacent cells that share a PCI are both neighbors of a third common cell, creating ambiguity during handover target selection even though the two same-PCI cells are not directly adjacent. The correct remediation for a PCI collision is a PCI replanning exercise, reassigning one of the conflicting cells to a unique PCI value that avoids both direct reuse with its neighbors and problematic modulo relationships that affect reference signal sequences. This is typically performed remotely via configuration management without requiring a site visit.

NEW QUESTION # 26
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