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| Section | Objectives |
|---|---|
| 5G RAN Products and Solutions Management | - Network Connectivity and Access
|
| Software Management | - Base Station Software Operations
|
| Fault and Alarm Management | - Monitoring and Troubleshooting
|
| Remote Operations of 5G Radio Access Networks | - 5G RAN Operations Center Procedures
|
| Configuration Management | - Parameter Administration
|
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NEW QUESTION # 21
After a remote configuration change causes unexpected cell behavior, and the automatic fallback mechanism does not fully resolve the issue, what is the most appropriate next step for the NOC engineer?
Answer: C
Explanation:
When a configuration change leads to unexpected behavior and any automatic fallback does not fully restore normal operation, the appropriate recovery action is to restore the affected network element's configuration from the most recent verified backup taken before the change was applied. This returns the element to its known-working state, addressing the immediate service impact while the root cause of the unexpected behavior from the new configuration can be investigated separately, outside of the live production environment if needed. This is precisely why taking and verifying a pre-change backup is emphasized as a best practice - it provides exactly this kind of recovery option. Decommissioning the cell is a drastic and disproportionate response to a configuration issue; applying an unrelated template introduces further uncertainty and risk; and taking no action prolongs any service degradation unnecessarily, which is inconsistent with the NOC's responsibility to restore service promptly.
NEW QUESTION # 22
After completing a software upgrade and subsequent configuration adjustments at a site, why is it important for the NOC engineer to update the site's maintenance records and change documentation?
Answer: C
Explanation:
Maintaining accurate and current maintenance records and change documentation - detailing what changes were made, when they were performed, by whom, and the reasoning or ticket reference behind them - provides essential context for future operations. If an issue arises at the site days, weeks, or months later, having a clear record of recent changes allows engineers investigating the new issue to quickly identify whether it might be related to a recent software upgrade or configuration adjustment, significantly speeding up root-cause analysis. This documentation also supports configuration audits, compliance requirements, and knowledge transfer between team members or shifts, ensuring continuity even as different engineers interact with the site over time. While documentation does have value for regulatory and audit purposes, dismissing it as having no operational value is incorrect - it directly supports troubleshooting efficiency. Documentation itself does not trigger software downloads or determine technical parameters like PCI, which are governed by separate configuration and software lifecycle processes.
NEW QUESTION # 23
A field team is planning a site visit to investigate a persistent coverage issue and requests information from the NOC to help prepare. What information can the NOC engineer most usefully provide to support this site survey?
Answer: C
Explanation:
When a field team is preparing to investigate a persistent coverage issue, remotely available operational data can significantly improve the efficiency and focus of their site visit. The NOC engineer can provide the current configuration of the affected cell (including parameters such as transmit power, tilt settings, and azimuth where available), a review of recent alarm history to identify any recurring or unresolved fault indications, and relevant performance data such as RSRP/SINR distributions and throughput trends, which can help characterize the nature of the coverage issue (for example, distinguishing a coverage gap from an interference problem) before the field team arrives. This context allows the field team to prioritize their investigation - for example, focusing on antenna alignment if tilt/azimuth data looks unusual, or focusing on potential external interference sources if SINR is poor despite adequate RSRP. Subscriber personal information, equipment purchase records, and data about unrelated sites would not provide relevant technical context for this investigation.
NEW QUESTION # 24
What is the key difference between a cell that has been administratively 'locked' (disabled) and a cell that reports 'Out of Service' due to a fault?
Answer: B
Explanation:
'Locked' (administratively disabled) describes a deliberate, controlled state set by an operator or engineer - for example, intentionally taking a cell out of service for planned maintenance, an upgrade, or a configuration change window. This is an expected, reversible action: the cell can be 'unlocked' once the work is complete. 'Out of Service' due to a fault, by contrast, reflects an unintended operational failure - the cell was expected to be operating normally, but a fault condition (such as a hardware, transport, or synchronization issue) has prevented it from doing so, typically accompanied by one or more alarms.
Distinguishing these states matters for NOC engineers: a locked cell appearing down is expected and requires no fault investigation, whereas an unexpectedly out-of-service cell requires diagnosis. Neither state inherently relates to transmit power, and out-of-service conditions are not always due to software upgrades.
NEW QUESTION # 25
A NOC engineer 'acknowledges' an active alarm in NetAct FM. What does this action signify?
Answer: A
Explanation:
Acknowledging an alarm in NetAct FM is an administrative action that marks the alarm as having been seen and taken ownership of by an engineer, without changing the underlying fault condition itself. In a NOC environment where multiple engineers or shifts monitor shared alarm lists, acknowledgement communicates that someone is already aware of and working on the issue, helping to avoid duplicated troubleshooting effort and providing a basic accountability trail for follow-up. It does not automatically resolve or repair the underlying fault - the alarm will only clear once the actual condition causing it is resolved, whether automatically by the network recovering or through engineer intervention. Acknowledgement also does not cause the base station to reboot, and acknowledged alarms remain visible in the active list (not deleted) until the underlying condition clears, at which point they typically move to the alarm history.
NEW QUESTION # 26
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