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| Section | Objectives |
|---|---|
| Configuration Management | - Parameter Administration
|
| 5G RAN Products and Solutions Management | - Network Connectivity and Access
|
| Software Management | - Base Station Software Operations
|
| Remote Operations of 5G Radio Access Networks | - 5G RAN Operations Center Procedures
|
| Fault and Alarm Management | - Monitoring and Troubleshooting
|
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NEW QUESTION # 17
What is the primary purpose of performing a configuration audit that compares a live network element's current parameter settings against an approved configuration baseline or template?
Answer: C
Explanation:
A configuration audit compares the actual, currently applied parameter settings on a live network element against a reference baseline or approved configuration template that represents the intended, standardized configuration for that element type or role. The primary purpose of this comparison is to detect configuration drift - differences that may have arisen from unauthorized manual changes, incomplete rollbacks, errors during bulk updates, or undocumented local modifications. Identifying such deviations is important for maintaining configuration integrity across the network, ensuring consistent behavior across similar cells, supporting troubleshooting (since unexpected parameter values are a common root cause of localized issues), and meeting internal governance or regulatory compliance requirements around change control. This process is distinct from performance monitoring (PRB utilization, handover success rate), which relies on PM counters, and from fault management, which tracks active alarms - configuration audits specifically address the state of configuration parameters themselves.
NEW QUESTION # 18
A transport alarm 'Ethernet link down' is raised on the BTS-side interface toward the aggregation router. What is an appropriate FIRST remote action for the NOC engineer?
Answer: B
Explanation:
When a transport-side alarm such as 'Ethernet link down' is raised on the BTS-facing interface toward the aggregation router, the appropriate first remote action is to investigate the physical and data-link layer status of that interface - checking link/port status, interface configuration such as speed and duplex settings and VLAN membership, and any visible cable/connector status indicators through management tools. If the issue appears to originate on the transport provider's side of the connection (such as a leased line or microwave link fault), coordinating with that provider is the next step. Only if remote checks cannot resolve the issue, or clearly indicate a physical hardware or cabling fault at the site, would on-site dispatch be considered.
Replacing the RF module addresses radio hardware, not a transport link fault, and modifying neighbor relations or cell bandwidth are RAN configuration changes that would not resolve a physical link failure.
NEW QUESTION # 19
After a field engineer physically replaces a Remote Electrical Tilt (RET) antenna actuator, what remote verification should the NOC engineer perform to confirm the new unit is properly integrated?
Answer: A
Explanation:
Remote Electrical Tilt (RET) units are Antenna Line Devices (ALDs) that communicate with the base station over the Antenna Interface Standards Group (AISG) bus. After a physical RET replacement, the appropriate remote verification is to confirm that the new device is discovered on the AISG bus, that it is communicating correctly with the base station's controller, and that its current tilt position can be read remotely and that tilt adjustment commands are correctly applied and reflected back. This confirms both the physical connectivity (cabling/bus communication) and functional operability (motor and position feedback) of the replaced unit.
The unit's color is irrelevant to functional verification, and while serial number changes are expected with replacement (a new unit will naturally have a different serial number, which should simply be recorded for inventory purposes), it is not itself a functional check. NR-ARFCN relates to radio carrier frequency configuration and has no relationship to RET device verification.
NEW QUESTION # 20
Before issuing any remote commands during a piloting session that will affect a specific cell at a multi-sector site, what verification is critical for the NOC engineer to perform to avoid unintended impact?
Answer: D
Explanation:
At multi-sector sites, or in environments where many similarly named cells exist across a large network, there is a meaningful risk that a NOC engineer could inadvertently issue a remote command - such as locking a cell, adjusting a parameter, or initiating a reset - against the wrong sector or even the wrong site if identifiers are not carefully verified. Before taking any action that affects a specific cell during a piloting session, the NOC engineer should explicitly confirm with the field engineer (and against system records) that the site, sector, and cell identifiers being acted upon correspond exactly to the physical location and equipment the field engineer is working on. This verification step is a critical safeguard against unintended service impact to unrelated cells or sites, which could create a second, unrelated outage on top of the planned activity. The remaining options are entirely unrelated to technical verification and have no bearing on safely executing remote piloting commands.
NEW QUESTION # 21
A NOC engineer observes an 'alarm storm' - dozens of alarms appearing within seconds across multiple cells served by the same site. What is the MOST likely explanation?
Answer: A
Explanation:
An 'alarm storm' - many alarms appearing across multiple cells at a single site within a short window - is a classic indicator that a shared resource serving all of those cells has failed. Multiple cells at a site commonly depend on the same System Module (baseband), the same transport connection back to the aggregation/core network, the same power supply, or the same synchronization source; a failure in any one of these shared elements can simultaneously impact every dependent cell, producing a burst of correlated alarms.
Recognizing this pattern allows the NOC engineer to search for a single common-cause fault - for example, a transport outage or System Module failure - rather than treating each cell's alarms as independent issues requiring separate investigation. It is extremely unlikely that multiple independent hardware faults occur simultaneously by coincidence, and such patterns should never be dismissed as a routine NetAct bug or simply ignored.
NEW QUESTION # 22
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