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Nokia NRN-522 Exam Syllabus Topics:

Nokia 5G RAN Network Operations Expert Sample Questions:

1. For security segmentation, NOC personnel typically do not connect directly from their workstations to production AirScale base stations. Instead, they first authenticate to an intermediate, hardened host. What is this intermediate host commonly called?

A) DNS server
B) Jump server / bastion host
C) Edge router
D) Load balancer

2. What does the NR-ARFCN (NR Absolute Radio Frequency Channel Number) represent in a 5G cell's configuration?

A) The number of active alarms currently reported by the cell
B) A standardized numeric reference that identifies the specific carrier frequency on which the cell operates
C) The percentage of available PRBs currently in use by the cell
D) A unique identifier for the cell within the core network's subscriber database

3. After a field engineer replaces an RF unit, the NOC engineer observes that the eCPRI link between the baseband and the new RF unit remains down, even after the cell is unlocked. What should the NOC engineer do first?

A) Immediately order a replacement baseband module to be shipped to the site
B) Permanently lock the cell and close the maintenance ticket as complete
C) Ask the field engineer to verify the physical fiber connections and SFP transceivers between the baseband and the new RF unit before pursuing further remote diagnosis
D) Change the cell's PLMN ID to force the eCPRI link to re-establish

4. A NOC team is investigating a degradation in E-RAB / QoS flow setup success rate for a specific gNB.
Which approach is MOST effective for identifying the root cause?

A) Reviewing only high-level marketing performance summaries
B) Assuming the cause is always the subscribers' devices without checking network-side data
C) Restarting NetAct entirely without further analysis
D) Correlating the KPI degradation with active alarms, recent configuration changes, and relevant counters (e.g., resource congestion, transport, signaling) for that gNB during the affected period

5. 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?

A) Document the activity, including the actions taken, verification results, and final status, in the appropriate maintenance ticket or change record
B) Forward the field engineer's personal mobile number to all other NOC team members
C) Take no further action, since verbal confirmation with the field engineer is sufficient and no written record is needed
D) Delete the maintenance ticket immediately, since the issue has been resolved

Solutions: