Prepare with Nokia : NRN-522 exam braindumps as your best preparation materials

Following completion of a hardware replacement and remote piloting activity, which combination of checks represents the most complete final verification before the NOC engineer closes out the activity as successful?

• A. Confirming all previously raised alarms related to the activity have cleared (or only expected residual alarms remain), the cell is unlocked and in service, relevant links (such as CPRI/eCPRI and AISG) report normal status, and short-term KPIs are consistent with the site's historical baseline
• B. Confirming the replacement part's serial number matches the shipping manifest, with no further checks required
• C. Confirming the weather conditions at the site were favorable during the activity
• D. Confirming the field engineer has packed up their tools

A cell repeatedly raises and clears 'Cell Unavailable' alarms. Performance data shows PRB utilization dropping to zero during exactly the same periods. Which area should be investigated FIRST as the likely root cause?

• A. The operator's billing system
• B. The make and model of subscriber handsets in the area
• C. NetAct user interface display/theme settings
• D. Possible transport link instability, loss of synchronization reference, or unexpected hardware resets affecting the cell during those periods

What is the key distinction between a full site backup and a partial (configuration-only) backup in the context of base station lifecycle management?

• A. A partial backup can only be performed by a field engineer physically present at the site
• B. A full backup includes both the software load and the complete configuration data, while a partial backup typically captures only configuration data without the software image
• C. A full backup only captures alarm history, while a partial backup captures performance counters
• D. There is no practical difference; both terms refer to identical backup content

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

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

Following completion of a hardware replacement and remote piloting activity, which combination of checks represents the most complete final verification before the NOC engineer closes out the activity as successful?

• A. Confirming all previously raised alarms related to the activity have cleared (or only expected residual alarms remain), the cell is unlocked and in service, relevant links (such as CPRI/eCPRI and AISG) report normal status, and short-term KPIs are consistent with the site's historical baseline
• B. Confirming the replacement part's serial number matches the shipping manifest, with no further checks required
• C. Confirming the weather conditions at the site were favorable during the activity
• D. Confirming the field engineer has packed up their tools

A cell repeatedly raises and clears 'Cell Unavailable' alarms. Performance data shows PRB utilization dropping to zero during exactly the same periods. Which area should be investigated FIRST as the likely root cause?

• A. The operator's billing system
• B. The make and model of subscriber handsets in the area
• C. NetAct user interface display/theme settings
• D. Possible transport link instability, loss of synchronization reference, or unexpected hardware resets affecting the cell during those periods

What is the key distinction between a full site backup and a partial (configuration-only) backup in the context of base station lifecycle management?

• A. A partial backup can only be performed by a field engineer physically present at the site
• B. A full backup includes both the software load and the complete configuration data, while a partial backup typically captures only configuration data without the software image
• C. A full backup only captures alarm history, while a partial backup captures performance counters
• D. There is no practical difference; both terms refer to identical backup content

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

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