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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: 5G RAN Architecture and Fundamentals | 20% | - 5G RAN logical and physical architecture
|
| Topic 2: Security and Compliance | 10% | - Security features and procedures
|
| Topic 3: Performance Monitoring and Optimization | 20% | - Performance analysis and optimization
|
| Topic 4: Network Configuration and Management | 25% | - Parameter management and configuration
|
| Topic 5: Fault Management and Troubleshooting | 25% | - Alarm and fault handling
|
Nokia NRN-522 덤프로 많은 분들께서 Nokia NRN-522시험을 패스하여 자격증을 취득하게 도와드렸지만 저희는 자만하지않고 항상 초심을 잊지않고 더욱더 퍼펙트한Nokia NRN-522덤프를 만들기 위해 모든 심여를 기울일것을 약속드립니다.
질문 # 85
When a software package is transferred to a base station via SFTP as part of a remote software delivery, what is the purpose of performing a checksum verification on the downloaded file before activation?
정답：B
설명：
A checksum (or hash value) verification compares a calculated value derived from the downloaded software file against an expected reference value provided by the software source. If the values match, this confirms that the file was transferred completely and without corruption or unauthorized modification during the transfer process - which is particularly important for large software images transferred over networks where transient errors, interruptions, or transmission issues can occasionally cause partial or corrupted downloads.
Activating a software package from a corrupted or incomplete file could lead to activation failures, unpredictable behavior, or a unit that fails to return to normal operation - even before any compatibility or configuration considerations come into play. Checksum verification is a foundational integrity check performed as part of the software delivery process and has no relationship to programming language translation, geographic location determination, or performance KPI calculations, which are entirely unrelated functions.
질문 # 86
What is the primary purpose of the Xn interface in a 5G RAN architecture?
정답：B
설명：
The Xn interface is the logical interface that connects neighboring gNBs (5G base stations) directly to one another, serving a role analogous to the X2 interface in 4G LTE. Its primary purpose is to support mobility- related signaling and data exchange between gNBs - most notably during handover procedures, where the source and target gNB use the Xn interface to coordinate the handover, exchange context information about the UE, and forward any buffered downlink user-plane data to minimize service interruption during the transition. The Xn interface can also carry information used for interference management and load balancing between neighboring cells. It is distinct from interfaces connecting the gNB to the core network (such as the NG interface), from intra-base-station interfaces like CPRI/eCPRI connecting baseband and RF units, and from the O and M connectivity used for software management, each of which serves a different architectural function within the overall RAN system.
질문 # 87
A remote 5G site has redundant transport paths (primary and backup) providing OandM connectivity to NetAct. What is the main operational benefit of this redundancy?
정답：A
설명：
Providing dual or redundant transport paths for O and M connectivity increases the resilience of remote management. If the primary backhaul link fails - for example, due to a fiber cut or a microwave link outage - the base station can continue to report alarms and performance data, and remain reachable for configuration changes via the secondary path, preserving the Operations Center's visibility and control without requiring a site visit purely to restore management connectivity. This redundancy specifically benefits the continuity of monitoring and management functions. It has no effect on a cell's radio coverage area, which depends on RF design parameters such as transmit power, antenna configuration, and frequency band, nor does it relate to spectrum-sharing arrangements between operators. It also does not eliminate the ongoing need for periodic software updates and patching, which remain a separate lifecycle management activity.
질문 # 88
What is the AISG bus used for in the context of antenna line device management?
정답：B
설명：
The Antenna Interface Standards Group (AISG) bus is a standardized communication interface (typically layered over RS-485 and sometimes carried over the same coaxial feeder cable as the RF signal, using a technique that separates the control signal from the RF) that enables the base station's control unit to discover, communicate with, and control Antenna Line Devices (ALDs) mounted on or near the antenna - most commonly Remote Electrical Tilt (RET) actuators and Tower Mounted Amplifiers (TMAs). Through the AISG bus, the system can remotely query device status, read sensor data such as current tilt position, and send control commands such as tilt adjustments or TMA gain settings. This is entirely distinct from the CPRI
/eCPRI fiber links carrying baseband-to-RF digital radio signals, the O and M IP network connecting the site to centralized management systems like NetAct, or the DC power distribution supplying equipment - each of which serves a different, non-overlapping function within the site's overall infrastructure.
질문 # 89
A NOC engineer needs to recover a base station from a state where its parameter settings have been corrupted, but the underlying software load is functioning correctly. Which type of backup would be most directly applicable to resolving this specific issue?
정답：D
설명：
When the issue is specifically that parameter/configuration data has become corrupted while the underlying software load remains functional, the most directly applicable recovery resource is a configuration backup - which contains the parameter settings (cell configuration, neighbor relations, transport settings, and so on) independent of the software image. Restoring from a configuration backup can address the corrupted settings without the additional time and disruption of reinstalling or reactivating software, which would be unnecessary in this scenario since the software itself is not the problem. Configuration data is a distinct dataset from the software image, not embedded within it, which is precisely why configuration-only backups exist as a lighter-weight option for scenarios like this. Alarm history and PM counter exports are records of operational events and measurements respectively - neither contains the parameter configuration data needed to restore an element's settings, making them unsuitable for this recovery scenario.
질문 # 90
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