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Nokia NRN-522 Exam Syllabus Topics:

Nokia 5G RAN Network Operations Expert Sample Questions:

1. 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 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
B) The cell's PLMN ID was automatically changed during the replacement
C) The replacement RF unit's exterior paint color does not match the original
D) The field engineer used a different brand of cable ties than specified

2. What is the key difference between a graceful restart and an immediate (forced) restart of a base station unit during maintenance activities?

A) A graceful restart attempts to allow active sessions to complete or be handed over before the restart proceeds, reducing dropped connections, while an immediate restart proceeds without waiting, causing any active sessions to be dropped
B) A graceful restart can only be performed by physically power-cycling the equipment on site
C) There is no functional difference between the two; both terms describe identical behavior
D) A graceful restart permanently disables the unit, while an immediate restart only temporarily disables it

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

A) It is the power supply cable providing DC power to the baseband unit
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 OandM IP network used to connect the site to NetAct

4. What is the Nokia-recommended access control practice for NOC personnel who remotely manage live production AirScale base stations?

A) Assign individual accounts with role-based access control (RBAC) following least-privilege principles
B) Share a single generic administrator account among all engineers
C) Disable session logging to improve performance
D) Leave default factory administrator passwords unchanged

5. A NOC engineer increases the configuredMaxTxPower parameter for a 5G cell as part of a coverage improvement initiative. What is the most likely operational consequence of this change?

A) The cell's coverage area may expand, but interference toward neighboring cells operating on the same or adjacent frequencies may also increase
B) The cell will automatically reduce its bandwidth to compensate for the power increase
C) The change will immediately disable all neighbor relations associated with the cell
D) The change has no impact on coverage or interference, only on the cell's software version

Solutions: