Nokia SRAN-Radio-Network-Performance-Optimization対応資料 & SRAN-Radio-Network-Performance-Optimization受験練習参考書

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Nokia SRAN-Radio-Network-Performance-Optimization Exam Syllabus Topics:

SectionObjectives
Troubleshooting and Performance Analysis- Network issue identification and resolution
  • 1. Performance degradation root cause analysis
    • 2. Fault analysis workflows
      Radio Network Performance Fundamentals- Key performance indicators (KPIs)
      • 1. Accessibility, retainability, and mobility KPIs
        • 2. Throughput and latency KPIs
          RF Optimization Principles- Coverage and capacity optimization
          • 1. Interference analysis and mitigation
            • 2. Coverage analysis and enhancement
              SRAN Architecture Overview- SRAN network structure and components
              • 1. Radio access network elements overview
                • 2. LTE/NR integration principles
                  LTE/NR Performance Optimization- Optimization techniques
                  • 1. Scheduling and resource allocation optimization
                    • 2. Handover optimization

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                      Nokia MN: NCSS NPS - SRAN Radio Network Performance Optimization Certification Exam | GS40-NPS-SRPER-E-S03-2510 認定 SRAN-Radio-Network-Performance-Optimization 試験問題 (Q17-Q22):

                      質問 # 17
                      Which of the following statements does not apply to mmWave radio propagation ?

                      正解：C

                      解説：
                      The correct answer is C .
                      At mmWave / FR2 frequencies , radio propagation is more challenging than in low-band or mid-band spectrum. Diffraction becomes weaker, blockage is more severe, foliage attenuation is high, and building penetration loss is significant. This is why mmWave networks usually require dense site grids, line-of-sight or near-line-of-sight paths, and strong beamforming. Industry mmWave references consistently describe high path loss, high penetration loss, and the need for directional antenna systems to compensate for these losses.
                      Option C does not apply because water absorption and atmospheric absorption generally become more relevant at higher frequencies, not lower. Rain, humidity, and oxygen/water-vapor absorption are important considerations for mmWave link budgets.
                      So the statement that does not apply to mmWave propagation is:
                      Low water absorption at high frequencies.


                      質問 # 18
                      Evaluate the impact of using MantaRay SON's centralized PCI optimization module compared to distributed SON implementations.

                      正解：B

                      解説：
                      The correct answer is C .
                      A centralized SON approach has broader network-level visibility than a purely distributed implementation.
                      For PCI optimization , this is important because PCI conflicts, PCI confusion, and neighbor-related PCI issues are not always local to one cell. They may involve several neighboring cells, multiple layers, and sometimes multiple vendors.
                      Nokia positions MantaRay SON as a centralized, AI-powered network optimization and automation platform for improving RAN quality, efficiency, and customer experience. Nokia also describes MantaRay SON as supporting multi-supplier/non-real-time RIC functionality in the MantaRay SMO framework.
                      So compared with distributed SON, centralized PCI optimization can better analyze wider-area PCI relationships and resolve PCI problems across multi-vendor or multi-layer networks.
                      Therefore, the correct statement is:
                      Centralized PCI optimization can identify and resolve PCI issues across multi-vendor networks.


                      質問 # 19
                      During an intra-gNB DU handover , what is the role of the RRC Reconfiguration message sent by the gNB- CU to the UE?

                      正解：A

                      解説：
                      The correct answer is A .
                      During an intra-gNB DU handover , the UE is moved from one cell/DU resource to another under the same gNB-CU control. The gNB-CU coordinates the handover preparation and sends an RRC Reconfiguration message to the UE.
                      The role of this message is to provide the UE with the required handover command information, such as:
                      Target PCell configuration
                      Radio resource configuration
                      Mobility control information
                      Random access configuration, when needed
                      Measurement or reconfiguration-related information
                      After receiving the RRC Reconfiguration , the UE performs the handover execution procedure toward the target cell and later responds with RRC Reconfiguration Complete .
                      Option B is incorrect because admission control and source-cell scheduling suspension are internal network- side procedures, not the UE-facing role of the RRC Reconfiguration message.
                      Option C is not the best answer because user-plane resource transfer is handled between gNB-CU/gNB-DU functions, while dedicated preamble allocation may be part of the configuration but is not the main purpose of the message.
                      Option D is incorrect because RLC reestablishment and PDCP recovery are lower-layer/user-plane handling actions, not the primary purpose of the RRC Reconfiguration message.
                      Therefore, the correct role is:
                      It instructs the UE to perform handover to the target PCell and provides measurement/configuration information.


                      質問 # 20
                      Identify the missing network components X, Y, and Z in the architecture diagram.

                      正解：A

                      解説：
                      The correct answer is B .
                      In the 5G Core , component X is connected to:
                      N2 from NG-RAN
                      N11 toward SMF
                      N15 toward PCF
                      N26 toward the EPC mobility entity
                      These are typical interfaces of the AMF , or Access and Mobility Management Function . Therefore, X = AMF .
                      In the EPC , component Z is connected to:
                      S1-MME from eNB
                      S11 toward the gateway
                      N26 toward the 5GC AMF
                      These are typical interfaces of the MME , or Mobility Management Entity . Therefore, Z = MME .
                      Component Y is outside the core user-plane path and represents the external service network connected through N6/SGi , commonly shown as IMS in voice-service architecture diagrams. Therefore, Y = IMS .
                      So the correct mapping is:
                      X: AMF, Y: IMS, Z: MME.


                      質問 # 21
                      In a high-mobility network, the maximum cell size must be restricted to 33 km . Which PRACH format and restricted-set type should be used?

                      正解：C

                      解説：
                      The correct answer is Format 1 / Type B .
                      For PRACH planning, the selected preamble format must support the required cell radius. Format 0 is too short for a 33 km cell because it is typically suitable only up to around 14.5 km . Format 2 is also not suitable because its practical maximum cell radius is around 29.5 km , which is below the required 33 km . Therefore, a longer PRACH format is needed.
                      Because the scenario mentions high mobility , an unrestricted PRACH set is not preferred. High-mobility environments require a restricted set to handle Doppler effects and reduce ambiguity in PRACH preamble detection. Between the restricted-set options, Type B is the correct choice for this 33 km high-mobility case.
                      A matching Nokia-style question source also lists this exact scenario with Format 1 / Type B as option A.


                      質問 # 22
                      ......

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                      SRAN-Radio-Network-Performance-Optimization受験練習参考書: https://www.mogiexam.com/SRAN-Radio-Network-Performance-Optimization-exam.html