Nokia NRN-522 : Nokia 5G RAN Network Operations Expert

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Nokia NRN-522 Exam Syllabus Topics:

Nokia 5G RAN Network Operations Expert Sample Questions:

1. While remotely piloting an RF unit replacement, the NOC engineer notices the new unit is detected but the cell fails to come into service, with an alarm indicating a CPRI/eCPRI configuration mismatch. What is a likely cause that the NOC and field engineer should jointly investigate?

A) The replacement RF unit's exterior paint color does not match the original
B) The field engineer used a different brand of cable ties than specified
C) The cell's PLMN ID was automatically changed during the replacement
D) The replacement RF unit is connected to a different physical port than the original unit, resulting in a mapping that does not match the existing configuration

2. 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?

A) Increasing the handover event hysteresis and/or time-to-trigger values for the relevant measurement event between the two cells
B) Reducing the channel bandwidth of both cells
C) Disabling the neighbor relation between the two cells entirely
D) Increasing the PCI value of one of the two cells

3. What is the Nokia-recommended access control practice for NOC personnel who remotely manage live production AirScale base stations?

A) Share a single generic administrator account among all engineers
B) Assign individual accounts with role-based access control (RBAC) following least-privilege principles
C) Leave default factory administrator passwords unchanged
D) Disable session logging to improve performance

4. A NOC engineer needs to recover a base station from a state where its parameter settings have been corrupted, but the underlying software load is functioning correctly. Which type of backup would be most directly applicable to resolving this specific issue?

A) A configuration backup, since it contains the parameter data needed to restore the element's settings without requiring a software reinstallation
B) An alarm history export, since it contains the parameter values needed for restoration
C) A PM counter export, since it records the configuration state at each reporting interval
D) A software backup only, since configuration data is always embedded within the software image itself

5. 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

Solutions: