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| Section | Objectives |
|---|---|
| Configuration Management | - Parameter Administration
|
| 5G RAN Products and Solutions Management | - Network Connectivity and Access
|
| Fault and Alarm Management | - Monitoring and Troubleshooting
|
| Remote Operations of 5G Radio Access Networks | - 5G RAN Operations Center Procedures
|
| Software Management | - Base Station Software Operations
|
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NEW QUESTION # 75
Before a field engineer disconnects and removes an RF unit for replacement, what action should the NOC engineer typically perform first?
Answer: A
Explanation:
Before a field engineer physically disconnects an RF unit, the NOC engineer should administratively lock the affected cell(s). Locking puts the cell into a controlled, planned out-of-service state, which has several benefits: it allows UEs currently served by the cell to be handed over or to reselect to neighboring cells in an orderly manner before the disconnection occurs, and it ensures that when the RF unit is disconnected, the resulting alarms are correctly understood by the NOC and any monitoring systems as part of a planned maintenance activity rather than an unexpected fault requiring separate investigation or triggering unnecessary alerts/escalations. Increasing neighboring cells' power is not a standard or necessary preparatory step and could introduce interference; deleting the configuration would require a full re- commissioning afterward; and changing the PLMN ID would be both ineffective at preventing the brief outage and disruptive to network identification.
NEW QUESTION # 76
A NOC team uses NetAct to download a new software package to a group of base stations during business hours, but schedules the activation of that software for later that night. What is the primary operational benefit of this 'download now, activate later' approach?
Answer: B
Explanation:
Software lifecycle management for base stations typically separates the download (transfer) phase from the activation phase, because each has different operational implications. Downloading a software package involves transferring a potentially large file to the base station's storage, which consumes transport bandwidth and storage I/O but does not itself interrupt the cell's current operation, since the existing software load continues running unaffected. Activation, by contrast, involves switching to the new software load, which typically requires the affected unit to restart and briefly interrupts service. By downloading during business hours - when transport capacity may be more available and the activation step has not yet occurred - and scheduling activation for a low-traffic maintenance window, the NOC minimizes both the duration of any service interruption and its impact on subscribers. This separation does not eliminate the need for backups, nor does activation occur automatically; it is explicitly scheduled or triggered as a distinct step.
NEW QUESTION # 77
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?
Answer: D
NEW QUESTION # 78
A NOC engineer notices that a cell's PRB (Physical Resource Block) utilization is consistently above 90% during peak hours. What does this MOST LIKELY indicate?
Answer: B
Explanation:
PRB (Physical Resource Block) utilization represents the proportion of a cell's available radio resources that are actively being used to carry traffic at a given time. Consistently high PRB utilization (for example, above
90%) during peak hours indicates the cell is approaching, or already experiencing, capacity congestion - there is little to no spare radio capacity to allocate to new or existing users during busy periods. This can directly affect throughput-related (Integrity) KPIs, since users may receive fewer resources than under lighter load, and can also impact accessibility if the cell becomes unable to admit new connections. This condition does not indicate a hardware failure - the cell is clearly operating and carrying significant traffic - is unrelated to PCI configuration, which is an identification parameter rather than a capacity indicator, and has no relationship to NetAct database storage. High PRB utilization is a capacity signal that may prompt load balancing, optimization, or capacity expansion actions.
NEW QUESTION # 79
A NOC engineer notices that UEs in a cell are triggering handovers to a neighboring cell and then quickly handing back, repeating this cycle (a 'ping-pong' pattern). Which parameter adjustment is most likely to help reduce this behavior?
Answer: D
Explanation:
Ping-pong handovers occur when a UE repeatedly hands over back and forth between two cells, often because the signal levels of both cells are very close to each other near the cell boundary, causing the handover trigger condition to be met in alternating directions in quick succession. Handover events (such as an A3 event, where a neighbor's signal becomes a defined offset better than the serving cell) include configurable hysteresis and time-to-trigger parameters. Increasing the hysteresis margin requires a more substantial and sustained signal difference before a handover is triggered, while increasing the time-to- trigger requires the condition to be met for a longer continuous duration before the measurement report is sent. Both adjustments reduce sensitivity to short-term signal fluctuations, directly addressing ping-ponging.
Disabling the neighbor relation would prevent legitimate handovers entirely, harming mobility performance; changing PCI values or bandwidth does not address the underlying signal-level trigger sensitivity that causes ping-pong behavior.
NEW QUESTION # 80
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