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| Section | Objectives |
|---|---|
| Fault and Alarm Management | - Monitoring and Troubleshooting
|
| Software Management | - Base Station Software Operations
|
| Configuration Management | - Parameter Administration
|
| Remote Operations of 5G Radio Access Networks | - 5G RAN Operations Center Procedures
|
| 5G RAN Products and Solutions Management | - Network Connectivity and Access
|
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NEW QUESTION # 76
Some alarms in NetAct FM clear automatically once the underlying fault condition no longer exists, while others require manual clearing by an engineer. What characterizes an alarm that requires manual clearing?
Answer: A
Explanation:
Many alarms in NetAct FM are designed to self-clear: once the network element detects that the underlying condition no longer exists - for example, a transient link flap recovering on its own - the element sends a clear notification and the alarm is automatically removed from the active list. However, some alarms represent conditions where the element cannot reliably self-verify resolution, such as certain hardware faults requiring physical intervention, or conditions tied to actions needing human confirmation. These alarms may remain active even after corrective action has been taken, until an engineer manually clears them or the system completes a subsequent successful self-test. NOC engineers need to understand this distinction so the active alarm list accurately reflects current network status, and so that manual clearing is correctly performed as part of completing a maintenance action where required.
NEW QUESTION # 77
What is the primary function of the AirScale System Module within an AirScale Base Transceiver Station (BTS)?
Answer: B
Explanation:
The AirScale System Module is the central baseband processing unit of the AirScale BTS. It hosts digital baseband processing for the deployed radio technologies, handles control-plane functions, and provides the O and M interface that NetAct and remote engineers use for configuration, fault, and performance management.
Under Nokia's Single RAN architecture, the same System Module hardware can support 2G, 3G, 4G, and 5G concurrently, with the active technology mix determined by software and licensing rather than separate dedicated hardware. RF amplification and the physical antenna interface are performed by separate AirScale Radio (RF) modules, not the System Module. The System Module is not a power supply for the cabinet, and while it receives external timing/synchronization references such as GNSS for network synchronization, it does not itself generate GPS satellite signals.
NEW QUESTION # 78
What is the Nokia-recommended access control practice for NOC personnel who remotely manage live production AirScale base stations?
Answer: A
Explanation:
Because a centralized Operations Center manages thousands of live network elements, strict access control is essential to maintaining network integrity and security. Nokia's operational security model requires each engineer to use an individually assigned account, with role-based access control (RBAC) restricting actions to those required for the user's job function - a configuration engineer might have provisioning rights, while a monitoring-only NOC analyst might have read-only access. This least-privilege approach provides full traceability of who performed which action, supports accountability during root-cause investigations, and limits the impact if any single account is compromised. Sharing a generic administrator account destroys individual accountability and increases risk of untraceable changes. Disabling session logging removes the audit trail needed for troubleshooting and compliance. Leaving default factory passwords unchanged is a well-known security vulnerability that must be remediated during commissioning, not a recommended ongoing practice.
NEW QUESTION # 79
What does the term 'Single RAN' refer to in the context of Nokia AirScale base stations?
Answer: C
Explanation:
Single RAN describes Nokia's architecture in which a common AirScale hardware platform - including the System Module and compatible radio units - can run multiple radio access technologies (2G GSM, 3G WCDMA, 4G LTE, and 5G NR) concurrently on the same site, with the technology mix and capacity determined by software configuration and licensing rather than separate dedicated hardware per generation.
This dramatically simplifies site footprint, power usage, and lifecycle management, and allows 5G to be introduced onto existing sites by adding software/capacity rather than deploying entirely new cabinets. It is unrelated to antenna count limits or SIM card types, and AirScale platforms also support multi-operator RAN sharing, so it does not restrict usage to a single operator. For NOC personnel, Single RAN means configuration, fault, and software management for several technologies may be addressed through the same base station and management session.
NEW QUESTION # 80
A NOC engineer is trying to isolate whether a fault originates in the baseband processing unit or in an RF module of an AirScale BTS. What is a useful FIRST diagnostic step?
Answer: D
Explanation:
When isolating a fault between baseband processing units and RF modules, checking the status and alarm details of the interconnecting interface - typically a CPRI or eCPRI link in AirScale architectures - between the System Module and the Radio unit is a logical first step. Alarms or abnormal status on this link can quickly reveal whether the problem lies in the connection itself (such as a fiber/cable fault or configuration mismatch) or within one of the connected components. This follows the principle of checking interfaces and boundaries before assuming a specific component has failed, avoiding unnecessary or premature hardware replacement. Replacing the antenna skips this diagnostic step entirely and risks an unwarranted field action.
Restarting NetAct is a network-wide action inappropriate for a single-site fault. Increasing transmit power to
'test' a suspected hardware issue is not a valid diagnostic method and could create interference.
NEW QUESTION # 81
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