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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Security and Compliance | 10% | - Security features and procedures
|
| Topic 2: 5G RAN Architecture and Fundamentals | 20% | - 5G RAN logical and physical architecture
|
| Topic 3: Fault Management and Troubleshooting | 25% | - Alarm and fault handling
|
| Topic 4: Performance Monitoring and Optimization | 20% | - Performance analysis and optimization
|
| Topic 5: Network Configuration and Management | 25% | - Parameter management and configuration
|
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NEW QUESTION # 65
NetAct shows an AirScale gNB as 'Connection Lost' although there has been no reported power outage at the site. What should the NOC engineer check FIRST?
Answer: B
Explanation:
A complete loss of O and M connectivity status in NetAct, without an associated power loss, most commonly indicates a problem in the IP path between the management system and the site - such as a backhaul
/transport link failure, a routing misconfiguration, a firewall rule change, or a fault on the site router or switch. Standard remote troubleshooting methodology follows a layered, 'isolate before escalate' approach:
confirm basic transport and IP reachability first (for example, checking link status, ping/traceroute results to the site's O and M address) before investigating radio-related items. RF unit VSWR, PCI configuration, and antenna tilt are radio-domain parameters that would not cause a total O and M connectivity loss, and checking them first would waste time and delay resolution. Verifying the transport path quickly narrows the fault domain and determines whether the issue can be resolved remotely or requires field dispatch.
NEW QUESTION # 66
During a Site Acceptance Test (SAT) for a newly commissioned 5G site, what is the NOC team's typical role?
Answer: B
Explanation:
During a Site Acceptance Test for a newly commissioned site, the NOC team's role centers on remote verification from the centralized operations perspective, complementing the field team's physical inspection and commissioning activities. This typically includes confirming that the new site and its cells are visible, reachable, and manageable through centralized tools such as NetAct (confirming O and M connectivity is correctly established), verifying that all expected cells come into service without configuration errors, checking that no unexpected or unresolved alarms are present that would indicate an incomplete or faulty installation, and reviewing initial performance indicators (such as successful connection attempts and basic KPI reporting) to confirm the site is functioning as intended before it is accepted into normal operation.
Physical inspections of mounting hardware, cabling installation, and commercial/contractual matters fall outside the NOC's remote operational role and are handled by field engineering, construction, and commercial teams respectively.
NEW QUESTION # 67
In the context of Nokia's Single RAN approach, what does it mean for a base station site's software package to support 'Single RAN'?
Answer: D
Explanation:
Single RAN is an architectural approach in which a common hardware platform - such as the AirScale System Module and associated radio units - and an integrated software package can simultaneously support multiple radio access technologies (for example, 2G, 3G, 4G, and 5G) on the same shared infrastructure, rather than requiring separate, technology-dedicated equipment for each generation. This significantly reduces the physical footprint, power consumption, and operational complexity at a site, since multiple technologies can be managed, monitored, and upgraded through unified O and M tools and processes. A Single RAN site is not restricted to a single technology - in fact, the opposite is true: it is designed specifically to host multiple technologies concurrently. It also does not require separate cabinets per technology, and it remains fully capable of receiving ongoing software upgrades and lifecycle management like any other deployment, with Single RAN describing the architectural integration rather than a static, unchangeable state.
NEW QUESTION # 68
A field engineer needs to work in close proximity to an antenna to replace a Tower Mounted Amplifier (TMA). What is the NOC engineer's most important responsibility before the field engineer begins this work?
Answer: D
Explanation:
When a field engineer needs to work in close physical proximity to an antenna - such as when replacing a Tower Mounted Amplifier - radio frequency (RF) exposure becomes a safety consideration, since active transmission from the antenna could expose the engineer to RF energy levels exceeding safe limits at close range. The NOC engineer's most important responsibility in this scenario is to coordinate placing the affected cell's RF transmission into a safe state - typically by locking the cell - before the field engineer begins work near the antenna, and to confirm this state is in place before giving the go-ahead. This directly supports the field engineer's physical safety. Increasing transmit power would worsen RF exposure risk and is the opposite of the correct action; scheduling for busy hours is irrelevant to the safety requirement and would also affect more subscribers; and disabling alarm notifications would reduce the NOC's situational awareness during the activity without providing any safety benefit.
NEW QUESTION # 69
Why is it considered a best practice to verify the integrity of a configuration or software backup file shortly after it is created, rather than assuming the backup process completed successfully?
Answer: A
Explanation:
A backup operation reporting a successful completion status does not always guarantee that the resulting backup file is complete, uncorrupted, and usable for a future restore - issues such as interrupted transfers, storage errors, or partial writes can sometimes occur without being immediately obvious. The critical risk is that such problems are often only discovered at the moment a restore is actually needed - typically during a recovery from a failed upgrade or configuration change - at which point the absence of a usable backup severely limits recovery options and can significantly extend an outage. For this reason, verifying backup integrity (for example, through checksum validation, file size checks, or test restores where feasible) shortly after creation is considered a best practice, ensuring that if a restore is ever needed, the backup can be relied upon. Backup verification has no relationship to KPI performance, alarm display functionality, or causing repeated restarts - its sole purpose is to confirm the backup's usability for recovery.
NEW QUESTION # 70
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