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| Certification Vendor: | Nokia |
|---|---|
| Exam Name: | Nokia 5G RAN Network Operations Expert |
| Exam Number: | NRN-522 |
| Real Exam Qty: | 55-65 |
| Exam Duration: | 90 minutes |
| Passing Score: | 70% |
| Related Certifications: | Nokia Certified 5G RAN Optimization Expert Nokia Certified 5G RAN Field Operations Expert Nokia Certified 5G RAN Design Expert |
| Exam Price: | 250 USD |
| Certificate Validity Period: | 3 years |
| Available Languages: | English |
| Exam Format: | Drag and Drop, Scenario-based, Multiple Choice |
| Recommended Training: | Nokia 5G RAN Network Operations Training Course |
| Exam Registration: | Pearson VUE Nokia Training & Certification Portal |
| Sample Questions: | Nokia NRN-522 Sample Questions |
| Exam Way: | Online proctored or onsite at authorized test centers |
| Pre Condition: | Recommended: Nokia Certified 5G RAN Professional level certification or equivalent experience; no mandatory prerequisites |
| Official Syllabus URL: | https://www.nokia.com/networks/training/5g/ran/certifications/expert/ |
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Nokia NRN-522 Certification Exam is ideal for professionals who work in the telecommunications industry and are responsible for designing, implementing, and managing 5G RAN networks. NRN-522 exam covers a wide range of topics, including 5G RAN architecture, deployment scenarios, network slicing, security, and performance optimization. It is a comprehensive exam that requires a deep understanding of 5G RAN network operations.
NEW QUESTION # 49
What is the purpose of a NetAct configuration/network audit tool in remote operations?
Answer: D
Explanation:
A NetAct configuration (network) audit tool compares the parameter values currently deployed on live network elements against a defined reference or baseline configuration - sometimes called a golden configuration or template - and reports any deviations or inconsistencies found. This is highly valuable for remote operations because it can detect unauthorized or accidental configuration changes, configuration drift following maintenance activities, or sites that failed to receive an intended bulk update correctly, all without requiring a physical site visit. It directly supports standard provisioning workflows by allowing engineers to confirm that planned configuration changes were applied correctly and consistently across all targeted base stations. The tool does not perform physical inspection of cabinets (a field activity), does not measure power consumption (handled by environmental/equipment monitoring functions), and is not used to produce marketing material - its scope is strictly configuration verification within the OAM domain.
NEW QUESTION # 50
Which of the following best describes 'fault isolation' as performed by NOC technical support before deciding whether to dispatch a field engineer?
Answer: B
Explanation:
Fault isolation is the systematic process by which NOC technical support narrows down the likely location and cause of a fault using all available remote diagnostic information, before deciding whether a remote fix is possible or a field dispatch is required. This includes reviewing active alarms and their correlation (distinguishing root-cause from symptom alarms), examining relevant performance management data for anomalies, checking the status of interfaces between functional domains such as baseband-to-RF links or transport interfaces, and reviewing element logs where available. The goal is to determine whether the fault most likely resides in the baseband processing unit, an RF module, the transport network, or an external
/environmental factor such as power or cooling, so that any field dispatch is properly scoped with the correct parts, tools, and instructions. Randomly replacing components, assuming a full rebuild is always needed, or ignoring correlation data are inefficient approaches that proper fault isolation is designed to avoid.
NEW QUESTION # 51
A 'Loss of Synchronization Reference' alarm appears on a 5G cell. Which input to the BTS is this alarm most directly associated with?
Answer: D
Explanation:
5G base stations require accurate frequency, and for many configurations (especially TDD operation and features like carrier aggregation) phase/time synchronization, typically derived from a GNSS receiver such as GPS or from a network-distributed timing source such as Synchronous Ethernet or PTP/IEEE 1588 over the transport network. A 'Loss of Synchronization Reference' alarm indicates the BTS has lost access to its timing source. This can lead to degraded performance and, in TDD deployments, can cause uplink/downlink timing misalignment between neighboring cells (interference), and may force the cell out of service if synchronization cannot be maintained. The correct troubleshooting focus is therefore the GNSS antenna
/receiver, related cabling, satellite visibility/obstructions, or the alternative network-based synchronization path - not neighbor relation configuration, handover KPIs, or NetAct account credentials, none of which relate to the BTS's timing reference source.
NEW QUESTION # 52
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: C
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 # 53
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: A
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 # 54
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