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Nokia NRN-522 Exam Syllabus Topics:

Nokia 5G RAN Network Operations Expert Sample Questions:

1. A cell repeatedly raises and clears 'Cell Unavailable' alarms. Performance data shows PRB utilization dropping to zero during exactly the same periods. Which area should be investigated FIRST as the likely root cause?

A) The operator's billing system
B) Possible transport link instability, loss of synchronization reference, or unexpected hardware resets affecting the cell during those periods
C) The make and model of subscriber handsets in the area
D) NetAct user interface display/theme settings

2. Before a field engineer disconnects and removes an RF unit for replacement, what action should the NOC engineer typically perform first?

A) Increase the transmit power of neighboring cells to compensate for the upcoming outage
B) Administratively lock the affected cell(s) so the disconnection occurs in a controlled state rather than appearing as an unexpected fault
C) Permanently delete the cell's configuration from NetAct
D) Change the cell's PLMN ID to prevent UEs from attempting to connect

3. A site reports a 'Rectifier Fault' or 'DC Power Fault' alarm together with multiple equipment alarms across different cabinets. What does the rectifier/DC power fault alarm relate to?

A) NetAct user account permissions
B) The site's AC-to-DC power supply system feeding the equipment
C) A software licensing issue on the base station
D) The configuration of neighboring cells

4. Why is it important for NOC personnel to establish a KPI baseline for each cell or site before evaluating whether current performance indicates a problem?

A) Baselines are only relevant during initial commissioning and are never referenced afterward
B) A baseline represents typical 'normal' performance for that cell, allowing deviations to be identified as potential issues rather than expected variation
C) Baselines provide no useful information and can be disregarded
D) Baselines are used to determine a cell's maximum transmit power setting

5. How does applying a software patch typically differ from performing a full software upgrade on a base station?

A) A patch completely replaces the entire software baseline with a new major release, while a full upgrade only modifies a single configuration parameter
B) There is no meaningful difference; the terms are interchangeable in all contexts
C) A patch is generally a smaller, targeted update addressing specific issues or fixes within the current software baseline, while a full upgrade replaces the overall software load with a new baseline release that may include new features and accumulated fixes
D) Patches can only be applied by replacing physical hardware components on site

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