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Nokia NRN-522 Exam Syllabus Topics:

Nokia 5G RAN Network Operations Expert Sample Questions:

Question 1

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

Question 2

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

Question 3

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

A. It is the OandM IP network used to connect the site to NetAct
B. It is the main fiber optic link carrying CPRI/eCPRI traffic between the baseband and RF units
C. 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)
D. It is the power supply cable providing DC power to the baseband unit

Question 4

After a field engineer completes a baseband module replacement and confirms physical installation is complete, which set of remote checks should the NOC engineer perform to verify successful restoration of service?

A. Confirm that the cell's PCI has automatically changed to a new value
B. Confirm the cell(s) return to service without critical or major alarms, CPRI/eCPRI links to RF units are up, and relevant KPIs return to expected baseline levels
C. Confirm only that the module's indicator light is the correct color, without checking any system-level status
D. Confirm the field engineer has left the site, without performing any further remote checks

Question 5

After a field engineer replaces a Tower Mounted Amplifier (TMA), what remote check should the NOC engineer perform to confirm the new TMA is correctly configured and operating within expected parameters?

A. Verify that the TMA is detected on the AISG bus and that its gain and bias settings are read correctly and align with the expected configuration for that antenna line
B. Verify that the TMA has the same weight as the unit it replaced
C. Verify that the cell's PLMN ID has changed to reflect the new TMA
D. Verify that the TMA's external housing matches the color of the antenna

Solutions: