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Nokia NRN-522 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: 5G RAN Architecture and Fundamentals | 20% | - Protocol stack and interfaces
|
| Topic 2: Fault Management and Troubleshooting | 25% | - Alarm and fault handling
|
| Topic 3: Performance Monitoring and Optimization | 20% | - Performance analysis and optimization
|
| Topic 4: Network Configuration and Management | 25% | - Software management and upgrades
|
| Topic 5: Security and Compliance | 10% | - Security features and procedures
|
Nokia 5G RAN Network Operations Expert Sample Questions:
1. A cell consistently shows PRB utilization above 90% during peak hours, along with a rising number of RRC Connection Rejections due to insufficient resources. What does this combination of indicators most strongly suggest?
A) The cell is suffering from capacity congestion during peak traffic periods
B) The cell is experiencing a hardware fault on the RF unit
C) The cell has an incorrect neighbor relation configuration
D) The cell's GNSS synchronization reference has been lost
2. What is the key difference between a graceful restart and an immediate (forced) restart of a base station unit during maintenance activities?
A) A graceful restart can only be performed by physically power-cycling the equipment on site
B) A graceful restart attempts to allow active sessions to complete or be handed over before the restart proceeds, reducing dropped connections, while an immediate restart proceeds without waiting, causing any active sessions to be dropped
C) A graceful restart permanently disables the unit, while an immediate restart only temporarily disables it
D) There is no functional difference between the two; both terms describe identical behavior
3. Which alarm severity level generally requires the MOST urgent NOC response under standard SLA-based prioritization?
A) Critical
B) Minor
C) Major
D) Warning
4. After a field engineer replaces a Tower Mounted Amplifier (TMA), what remote check should the NOC engineer perform to confirm the new TMA is correctly configured and operating within expected parameters?
A) Verify that the cell's PLMN ID has changed to reflect the new TMA
B) Verify that the TMA is detected on the AISG bus and that its gain and bias settings are read correctly and align with the expected configuration for that antenna line
C) Verify that the TMA's external housing matches the color of the antenna
D) Verify that the TMA has the same weight as the unit it replaced
5. Which of the following best describes 'fault isolation' as performed by NOC technical support before deciding whether to dispatch a field engineer?
A) Disregarding any alarm correlation information available
B) Using available remote diagnostics - alarms, correlation, PM data, interface status, and logs - to determine whether the fault likely lies in the baseband, RF, transport, or external/environmental domain
C) Replacing hardware components at random until the alarm clears
D) Assuming every fault automatically requires a full site rebuild
Solutions:
| Question # 1 Answer: A | Question # 2 Answer: B | Question # 3 Answer: A | Question # 4 Answer: B | Question # 5 Answer: B |
