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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: SRAN Optimization Tools and Reports | 10-15% | - Automated optimization features - Nokia NetAct and performance tools - Configuration management for optimization - Report generation and interpretation |
| Topic 2: SRAN Architecture and Fundamentals | 15-20% | - SRAN solution components and functions - Radio access concepts and principles - Single RAN integration principles - SRAN network architecture overview |
| Topic 3: Performance Troubleshooting | 20-25% | - Network failure identification and resolution - Root cause analysis methodologies - Common performance issues diagnosis - Optimization case studies - Troubleshooting tools utilization |
| Topic 4: Radio Network Optimization Techniques | 25-30% | - Coverage optimization methods - Parameter tuning best practices - Interference analysis and mitigation - Handover optimization - Load balancing techniques - Capacity optimization strategies |
| Topic 5: Radio Network Performance Monitoring | 20-25% | - Performance data collection and analysis - Real-time network monitoring techniques - Threshold configuration and alerting - KPI definition and measurement - Performance monitoring tools and dashboards |
>> SRAN-Radio-Network-Performance-Optimizationテキスト <<
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質問 # 10
Identify the missing network components X, Y, and Z in the architecture diagram.
正解：D
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 # 11
The slice type SST value for Extreme Broadband is typically:
正解：B
解説：
The correct answer is B .
In 5G network slicing, SST means Slice/Service Type . It identifies the high-level service category of a network slice.
Typical standardized SST values are:
SST = 1 # eMBB, enhanced Mobile Broadband
SST = 2 # URLLC, Ultra-Reliable Low-Latency Communication
SST = 3 # MIoT/mMTC, Massive IoT or massive Machine Type Communication
SST = 4 # V2X-related slice type
"Extreme Broadband" is normally aligned with eMBB , because it refers to high data rate, high capacity, and broadband user experience.
Therefore, the SST value for Extreme Broadband is:
1.
質問 # 12
Which statement is not true about MantaRay SON ?
正解：D
解説：
The correct answer is B .
The statement "Energy savings management is not covered" is not true . Nokia describes MantaRay SON as supporting radio network performance, quality, and energy efficiency optimization. Nokia also references AI-powered energy savings management and RAN energy efficiency use cases under its SON/MantaRay automation portfolio.
The other statements are aligned with Nokia SON/MantaRay positioning. Nokia describes MantaRay SON as an automation layer within the MantaRay SMO framework, with support for multi-supplier/non-real-time RIC functionality and an application ecosystem. Nokia also has historical EdenNet SON material, including EdenNet SON Energy Saving Management.
Therefore, the statement that is not true is:
Energy savings management is not covered.
質問 # 13
In a 5G cell , the following parameter has been modified: lowLatencyReservation = 15 .
Which percentage of UEs will be reallocated to a higher SR periodicity group whenever the threshold for moving to a higher SR periodicity group is reached?
正解：D
解説：
The correct answer is C .
In 5G uplink scheduling, SR , or Scheduling Request , is used by the UE to request uplink resources when it has data to send. SR periodicity affects uplink latency and PUCCH capacity: shorter SR periodicity gives lower latency but consumes more control-channel resources, while longer SR periodicity saves resources but increases delay.
The parameter lowLatencyReservation = 15 means 15% of the UE/resource share is reserved for the low- latency SR periodicity group. When the load threshold is reached, the remaining portion can be moved to a higher SR periodicity group.
Calculation:
100% # 15% = 85%
So the percentage of UEs that can be reallocated to a higher SR periodicity group is:
0.85 , or 85% .
質問 # 14
Which of the following statements about CBRA , or contention-based random access , is correct?
正解：B
解説：
The correct answer is B .
In contention-based random access , the UE chooses a random access preamble by itself from a configured pool of available contention-based preambles. This is typically used when the UE does not yet have a dedicated connection or when the network has not assigned a dedicated preamble.
Because multiple UEs may choose the same preamble at the same time, preamble collision is possible . That is why CBRA requires a contention resolution step.
Option C describes contention-free random access , not CBRA. In contention-free random access, the network assigns a dedicated preamble to the UE, so collision risk is avoided and contention resolution is not required.
Option A is not the correct CBRA principle being tested. RACH false detection can be a receiver/design issue, but it does not define the CBRA procedure.
Option D describes a possible NSA signaling behavior around access failure handling, but it is not the core correct definition of CBRA.
Therefore, the correct CBRA statement is:
The UE autonomously selects a preamble from the configured range and starts the random access procedure.
質問 # 15
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