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| Section | Objectives |
|---|---|
| Topic 1: Troubleshooting and Performance Analysis | - Network issue identification and resolution
|
| Topic 2: SRAN Architecture Overview | - SRAN network structure and components
|
| Topic 3: RF Optimization Principles | - Coverage and capacity optimization
|
| Topic 4: Radio Network Performance Fundamentals | - Key performance indicators (KPIs)
|
| Topic 5: LTE/NR Performance Optimization | - Optimization techniques
|
>> SRAN-Radio-Network-Performance-Optimization시험대비 덤프문제 <<
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질문 # 14
The slice type SST value for Extreme Broadband is typically:
정답：C
설명：
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.
질문 # 15
Evaluate the impact of using MantaRay SON's centralized PCI optimization module compared to distributed SON implementations.
정답：D
설명：
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.
질문 # 16
In a 5G NSA Option 3x deployment, why should we not define 5G neighbors in LTE sectors where there is no 5G coverage ?
정답：A
설명：
The correct answer is A .
In 5G NSA Option 3x , LTE acts as the Master Cell Group , and NR acts as the Secondary Cell Group , usually added through EN-DC . If 5G NR neighbors are configured in an LTE sector where there is actually no 5G coverage , the LTE eNB may still configure the UE to perform NR measurements.
To perform NR inter-RAT or inter-frequency measurements, the UE may require measurement gaps .
During these gaps, the UE stops normal LTE reception/transmission activities to measure NR frequencies. If there is no real 5G coverage, those gaps become wasted measurement time and can reduce LTE user throughput.
Option B is not the best answer because if there is no 5G coverage, the main issue is not successful SCG addition or handover degradation, but unnecessary measurement activity. Option C is also not correct because redirection from 5G to 4G normally occurs when the UE is already on or connected to 5G coverage, which is not the case here.
Therefore, the main reason is:
LTE throughput degradation due to unnecessary measurement gap configuration.
질문 # 17
Which of the following statements about CBRA , or contention-based random access , is correct?
정답：A
설명：
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.
질문 # 18
Identify the missing network components X, Y, and Z in the architecture diagram.
정답：D
설명：
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.
질문 # 19
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