Nokia NRN-522 Practice Exams Questions

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Nokia NRN-522 Exam Syllabus Topics:

SectionWeightObjectives
Performance Monitoring and Optimization20%- Performance analysis and optimization
  • 1. Parameter tuning for better performance
  • 2. Counter and trace analysis
- Key performance indicators (KPIs)
  • 1. Throughput and latency metrics
  • 2. Accessibility, retainability, mobility KPIs
5G RAN Architecture and Fundamentals20%- 5G RAN logical and physical architecture
  • 1. NSA and SA deployment options
  • 2. gNB functions and components
- Protocol stack and interfaces
  • 1. User plane and control plane protocols
  • 2. F1, E1, Xn, NG interfaces
Security and Compliance10%- Security features and procedures
  • 1. Data integrity and encryption
  • 2. Access control and authentication
Fault Management and Troubleshooting25%- Common issues and solutions
  • 1. Connection and access problems
  • 2. Interference and coverage issues
- Alarm and fault handling
  • 1. Alarm classification and interpretation
  • 2. Fault isolation and resolution steps
Network Configuration and Management25%- 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

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Nokia 5G RAN Network Operations Expert Sample Questions (Q47-Q52):

NEW QUESTION # 47
During a complex remote piloting activity involving multiple steps and risk of service impact, what additional coordination practice helps ensure accountability and a clear record of what was agreed and performed at each stage?

Answer: C

Explanation:
For complex, multi-step remote piloting activities with potential service impact, using a shared communication channel - such as a bridge call or a logged chat/messaging channel - where each step, its confirmation, and its result are recorded in real time provides significant benefits. It creates a contemporaneous record of exactly what was instructed, performed, and confirmed at each stage, which supports accountability (clarifying who performed or authorized each action) and provides an accurate timeline that can be referenced if an issue arises during or after the activity, or if the activity needs to be reviewed afterward for process improvement. This is in addition to, not a replacement for, the final documentation in the maintenance ticket. Avoiding real-time communication would undermine the collaborative coordination that complex activities require; anonymous channels would defeat the accountability purpose; and performing steps simultaneously without sequencing would be unsafe and likely to cause errors, particularly where later steps depend on the successful completion of earlier ones.


NEW QUESTION # 48
NetAct reports the transport link to a remote 5G site as 'up', but the NOC engineer still cannot establish an OandM session to the AirScale BTS. What is the MOST appropriate next troubleshooting step?

Answer: A

Explanation:
When basic transport/IP connectivity to a site is confirmed as up but an O and M management session still cannot be established, the issue is likely at a higher layer than physical or network-layer reachability.
Common causes include expired or mismatched security certificates, incorrect login credentials, or a misconfigured O and M IP address or management VLAN on the base station itself. A layered troubleshooting approach moves from transport, to network, to application/management-layer checks once lower layers are confirmed functional. Replacing the RF module addresses a hardware radio issue, not an O and M session
/authentication problem, and would be premature without further evidence. Adjusting reference signal power is unrelated to management connectivity. Restarting the entire NetAct server is a drastic action affecting the whole managed network and is never an appropriate first response to a single-site connectivity issue.


NEW QUESTION # 49
After a remote piloting session for a hardware replacement is successfully completed and the site is confirmed to be back in normal operation, what should the NOC engineer do regarding the activity record?

Answer: C

Explanation:
After successfully completing a remote piloting session, documenting the activity in the appropriate maintenance ticket or change record is an essential closing step. This documentation should capture what actions were taken (both remotely and physically), the verification steps performed and their results (such as confirmation that the cell returned to service without alarms and that links were re-established), and the final status of the site. This record provides traceability for future reference - for example, if related issues arise later, or for audit and reporting purposes - and ensures continuity for other team members who may not have been involved in the original activity but need context later. Relying solely on verbal confirmation provides no lasting record and is inconsistent with good operational practice. Deleting the ticket immediately discards this valuable history, and sharing a field engineer's personal contact information with the broader team is unrelated to activity documentation and would raise privacy considerations.


NEW QUESTION # 50
A NOC engineer notices that UEs in a cell are triggering handovers to a neighboring cell and then quickly handing back, repeating this cycle (a 'ping-pong' pattern). Which parameter adjustment is most likely to help reduce this behavior?

Answer: B

Explanation:
Ping-pong handovers occur when a UE repeatedly hands over back and forth between two cells, often because the signal levels of both cells are very close to each other near the cell boundary, causing the handover trigger condition to be met in alternating directions in quick succession. Handover events (such as an A3 event, where a neighbor's signal becomes a defined offset better than the serving cell) include configurable hysteresis and time-to-trigger parameters. Increasing the hysteresis margin requires a more substantial and sustained signal difference before a handover is triggered, while increasing the time-to- trigger requires the condition to be met for a longer continuous duration before the measurement report is sent. Both adjustments reduce sensitivity to short-term signal fluctuations, directly addressing ping-ponging.
Disabling the neighbor relation would prevent legitimate handovers entirely, harming mobility performance; changing PCI values or bandwidth does not address the underlying signal-level trigger sensitivity that causes ping-pong behavior.


NEW QUESTION # 51
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: C

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 # 52
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