Nokia SRAN-Radio-Network-Performance-Optimization Examsfragen, SRAN-Radio-Network-Performance-Optimization Fragen Und Antworten

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

Section	Weight	Objectives
Performance Troubleshooting	20-25%	- Troubleshooting tools utilization - Optimization case studies - Network failure identification and resolution - Common performance issues diagnosis - Root cause analysis methodologies
Radio Network Optimization Techniques	25-30%	- Capacity optimization strategies - Coverage optimization methods - Parameter tuning best practices - Handover optimization - Load balancing techniques - Interference analysis and mitigation
SRAN Architecture and Fundamentals	15-20%	- Radio access concepts and principles - SRAN network architecture overview - SRAN solution components and functions - Single RAN integration principles
SRAN Optimization Tools and Reports	10-15%	- Nokia NetAct and performance tools - Automated optimization features - Configuration management for optimization - Report generation and interpretation
Radio Network Performance Monitoring	20-25%	- Performance data collection and analysis - Performance monitoring tools and dashboards - KPI definition and measurement - Real-time network monitoring techniques - Threshold configuration and alerting

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Nokia MN: NCSS NPS - SRAN Radio Network Performance Optimization Certification Exam | GS40-NPS-SRPER-E-S03-2510 SRAN-Radio-Network-Performance-Optimization Prüfungsfragen mit Lösungen (Q20-Q25):

20. Frage
In NR SA Option 2, the UE is camped on an SA serving cell. An IRAT handover is triggered for a multi-QCI call, QCI 1 and QCI 6, due to weak coverage of the serving cell. What will happen to both QCIs during the IRAT handover toward LTE?

A. IRAT handover is not supported in SA Option 2.
B. The QCI 1 bearer, or voice call, will be released, while the QCI 6 data bearer will continue on LTE.
C. The QCI 1 bearer, or voice call, and the QCI 6 data bearer will both continue on LTE.
D. The QCI 1 bearer, or voice call, will continue on LTE, while the QCI 6 data bearer will be released.

Antwort: C

Begründung:
The correct answer is D.
In 5G SA Option 2, NR works independently with the 5G Core, but interworking with LTE/EPC can be supported for mobility continuity. When IRAT handover toward LTE is triggered due to weak NR coverage, the goal is to preserve the active services during mobility.
For a multi-QCI service:
QCI 1 normally represents the voice bearer, such as VoLTE/IMS voice continuity after movement to LTE.
QCI 6 normally represents a non-GBR data bearer.
During a supported IRAT handover from NR SA to LTE, both the voice bearer and data bearer can be transferred to LTE, assuming proper interworking, bearer mapping, and LTE coverage availability.
Option C is incorrect because IRAT mobility from NR SA to LTE is supported in properly configured networks. Option A is incorrect because the voice bearer is the most critical bearer to preserve. Option B is also not the best answer because the data bearer does not necessarily need to be released during IRAT handover.
Therefore, the expected result is:
Both QCI 1 voice and QCI 6 data continue on LTE.

21. Frage
Which of the following statements about CBRA , or contention-based random access , is correct?

A. If there is no existing connection between the UE and the RAN, the UE autonomously selects a preamble from the provided range and starts the access procedure.
B. If the RACH procedure fails for an NSA UE, it reports the failure to the eNB via the 4G RRC connection, and the eNB informs the gNB via the X2 connection.
C. If the RACH preamble is not particularly robustly coded, there is a risk that random noise combines into something that the BTS receiver interprets as a valid preamble.
D. If there is already an existing connection, the gNB can instruct the UE to use a specific, dedicated preamble. Therefore, there is no risk of preamble collision, and contention resolution is not needed.

Antwort: A

Begründung:
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.

22. Frage
Evaluate the impact of extended FR2 cell range on power consumption.

A. It reduces power consumption by optimizing beamforming.
B. It has no impact on power consumption.
C. It increases power consumption because UEs need more energy to transmit uplink signals.
D. It decreases power consumption due to better radio conditions.

Antwort: C

Begründung:
The correct answer is C .
In FR2/mmWave , uplink coverage is often the limiting factor because UE transmit power is much lower than gNodeB transmit power, and mmWave propagation suffers from high path loss and blockage. Ericsson's mmWave coverage discussion also notes that high-band coverage is limited by uplink signal quality and high- band propagation characteristics.
When the FR2 cell range is extended, UEs farther from the serving cell must transmit uplink signals over a more difficult radio path. This usually requires higher UE transmit power, more robust MCS, more repetitions or retransmissions, and potentially longer uplink activity. As a result, UE battery consumption can increase.
Therefore, extended FR2 range generally:
Increases power consumption because UEs need more energy to transmit uplink signals.

23. Frage
What is the role of admission control in 5G networks ?

A. To check whether there are enough resources for new connections
B. To manage the modulation schemes
C. To optimize the downlink throughput
D. To increase the spectral efficiency

Antwort: A

24. Frage
Regarding the Vo5G / IMS voice and video over 5G feature, which statements are correct?

A. A, B, C, and D
B. B and C
C. Supports IMS conversational voice with 5QI 1 .
D. Supports IMS video flow with 5QI 2 .
E. A and B
F. A, B, and C
G. Supports IMS signaling QoS flows with 5QI 5 .
H. Supports IMS voice and video over 5G in gNB for FR1, both TDD and FDD.

Antwort: C

Begründung:
The correct answer is C: A, B, C, and D .
This question is about Vo5G / VoNR IMS service support in 5G SA. For IMS-based services over 5G, different QoS flows are used for signaling, voice media, and video media.
Statement A is correct.
The feature supports IMS voice and video over 5G in the gNB for FR1 , including both TDD and FDD deployments.
Statement B is correct.
IMS signaling commonly uses 5QI 5 . This QoS flow carries SIP/IMS signaling messages such as registration, session setup, modification, and release.
Statement C is correct.
IMS conversational voice uses 5QI 1 , which is the standardized GBR QoS identifier for conversational voice.
Statement D is correct.
IMS conversational video commonly uses 5QI 2 , which is associated with conversational video traffic.

25. Frage
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