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Nokia NRN-522 Exam Syllabus Topics:

Nokia 5G RAN Network Operations Expert Sample Questions:

1. What is the AISG bus used for in the context of antenna line device management?

A) It is a standardized communication interface that allows the base station to communicate with and control Antenna Line Devices such as RET units and Tower Mounted Amplifiers (TMAs)
B) It is the main fiber optic link carrying CPRI/eCPRI traffic between the baseband and RF units
C) It is the OandM IP network used to connect the site to NetAct
D) It is the power supply cable providing DC power to the baseband unit

2. After a remote configuration change causes unexpected cell behavior, and the automatic fallback mechanism does not fully resolve the issue, what is the most appropriate next step for the NOC engineer?

A) Wait indefinitely without taking action, since the issue will eventually self-correct
B) Restore the affected network element's configuration from the most recent verified pre-change backup
C) Permanently decommission the affected cell
D) Apply a completely different, unrelated configuration template to the cell

3. A specific neighbor relation between Cell A and Cell B shows a consistently low handover success rate, while overall network-wide mobility KPIs remain healthy. What is the most appropriate first troubleshooting step?

A) Review and verify the neighbor relation configuration and measurement parameters between Cell A and Cell B
B) Restart the entire baseband module serving Cell A
C) Reboot the core network mobility management element
D) Increase the transmit power of every cell in the cluster

4. Why is an automatic fallback (rollback) mechanism important when activating new software on a base station?

A) It allows the base station to automatically revert to the previous, known-working software load if the new load fails to come into normal operation within a defined time, minimizing service downtime
B) It permanently deletes the previous software version immediately after a successful activation
C) It automatically applies the new software to all other base stations in the network simultaneously
D) It prevents the NOC from ever needing to monitor the base station after a software activation

5. Why do NOC teams typically schedule software activation activities - which require a base station restart - for late-night or off-peak hours rather than during the day?

A) Because restarting the base station briefly interrupts service, and scheduling this during periods of lowest traffic minimizes the number of subscribers affected
B) Because activation always takes significantly longer to complete at night than during the day
C) Because base stations are physically unable to restart during daylight hours
D) Because NetAct only permits configuration changes to be submitted during off-peak hours

Solutions: