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Nokia NRN-522 Exam Syllabus Topics:

Nokia 5G RAN Network Operations Expert Sample Questions:

Question 1

Over a period of several weeks, a NOC team observes that a particular cell's average PRB utilization during the busy hour has steadily increased from 60% to consistently above 85%, even though no faults or configuration issues have been identified. What is the most appropriate action based on this trend?

A. Ignore the trend since no active alarms are present
B. Immediately lock the cell to prevent further load increase
C. Flag the cell for capacity planning review, as the trend suggests the cell may require additional capacity to maintain performance
D. Reduce the cell's transmit power to discourage new connections

Question 2

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

Question 3

Which of the following best describes 'fault isolation' as performed by NOC technical support before deciding whether to dispatch a field engineer?

A. Replacing hardware components at random until the alarm clears
B. Assuming every fault automatically requires a full site rebuild
C. Disregarding any alarm correlation information available
D. 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

Question 4

After exhausting standard remote troubleshooting steps for a persistent Major alarm that remains unresolved, what is the appropriate NOC action?

A. Delete the alarm record from NetAct so it no longer appears
B. Escalate the issue following defined procedures (e.g., to a higher support tier or field operations), documenting troubleshooting steps already performed
C. Ignore the alarm and wait to see if it clears on its own
D. Administratively lock all cells across the entire network

Question 5

Accessibility KPIs such as RRC Connection Setup Success Rate drop sharply for a single cell, while neighboring cells remain normal. What should the NOC engineer check FIRST?

A. The billing system records for that cell's coverage area
B. The operating system versions of handsets used by subscribers nationwide
C. Recent alarms or configuration changes specific to that cell, such as hardware/transport faults or recent parameter modifications
D. The color theme configuration of the NetAct dashboard

Solutions: