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Nokia 5G RAN Network Operations Expert Sample Questions:

1. 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 only that the module's indicator light is the correct color, without checking any system-level status
B) Confirm that the cell's PCI has automatically changed to a new value
C) Confirm the field engineer has left the site, without performing any further remote checks
D) 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

2. What is a 'threshold crossing alert' (TCA), and how does it differ from a standard equipment fault alarm?

A) It is functionally identical to an equipment fault alarm in every respect
B) It is generated when a monitored performance counter or KPI (e.g., PRB utilization) crosses a configured threshold, indicating a performance condition rather than necessarily a hardware failure
C) It applies only to software license expiry alarms
D) It is a fixed system value that operators cannot configure

3. An operator is considering reducing the PM Result Output Period (ROP) for a set of cells from 15 minutes to
1 minute to enable near real-time troubleshooting. What is the most significant operational trade-off of this change?

A) Shorter ROPs make KPI formulas invalid and unusable
B) Shorter ROPs significantly increase the volume of measurement data generated and the load on collection and storage systems
C) Shorter ROPs automatically disable all alarm notifications for the affected cells
D) Shorter ROPs prevent NetAct from displaying any historical performance trends

4. What does the term 'Single RAN' refer to in the context of Nokia AirScale base stations?

A) A type of SIM card used for testing
B) A requirement that only one mobile operator can ever use the equipment
C) A restriction allowing only one antenna per site
D) A common baseband hardware platform that can support 2G, 3G, 4G, and 5G simultaneously via software configuration

5. While remotely piloting an RF unit replacement, the NOC engineer notices the new unit is detected but the cell fails to come into service, with an alarm indicating a CPRI/eCPRI configuration mismatch. What is a likely cause that the NOC and field engineer should jointly investigate?

A) The cell's PLMN ID was automatically changed during the replacement
B) The field engineer used a different brand of cable ties than specified
C) The replacement RF unit's exterior paint color does not match the original
D) The replacement RF unit is connected to a different physical port than the original unit, resulting in a mapping that does not match the existing configuration

Solutions: