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| Section | Weight | Objectives |
|---|---|---|
| Performance Troubleshooting | 20-25% | - Network failure identification and resolution - Root cause analysis methodologies - Optimization case studies - Troubleshooting tools utilization - Common performance issues diagnosis |
| Radio Network Performance Monitoring | 20-25% | - Performance data collection and analysis - Threshold configuration and alerting - KPI definition and measurement - Real-time network monitoring techniques - Performance monitoring tools and dashboards |
| SRAN Architecture and Fundamentals | 15-20% | - SRAN solution components and functions - SRAN network architecture overview - Single RAN integration principles - Radio access concepts and principles |
| SRAN Optimization Tools and Reports | 10-15% | - Nokia NetAct and performance tools - Configuration management for optimization - Automated optimization features - Report generation and interpretation |
| Radio Network Optimization Techniques | 25-30% | - Interference analysis and mitigation - Capacity optimization strategies - Handover optimization - Parameter tuning best practices - Coverage optimization methods - Load balancing techniques |
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NEW QUESTION # 14
Regarding the Vo5G / IMS voice and video over 5G feature, which statements are correct?
Answer: C
Explanation:
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.
NEW QUESTION # 15
What is the role of admission control in 5G networks ?
Answer: A
NEW QUESTION # 16
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?
Answer: C
Explanation:
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.
NEW QUESTION # 17
In the case of 5G SA, which of the following triggers the Radio Link Failure, or RLF, handling mechanism?
Answer: D
Explanation:
The correct answer is C.
In 5G SA, Radio Link Failure handling is mainly UE-driven. The UE monitors the radio link quality using lower-layer indications such as in-sync and out-of-sync indications. If the UE receives enough out-of-sync indications, it starts the relevant RLF timer, commonly associated with T310 behavior. If the link does not recover before the timer expires, the UE declares Radio Link Failure and starts recovery, such as RRC re- establishment.
The gNodeB can detect uplink problems and may release or reconfigure the UE, but the classical RLF handling mechanism is triggered at the UE side.
So the correct answer is:
UE indication timer only.
NEW QUESTION # 18
Consider that the UE is performing handover from LTE to NR with the help of features CB007742 / CB008731 . Referring to the picture below, at what stage can the handover be triggered from LTE to NR?
Answer: B
Explanation:
The correct answer is C: From Stage 3 .
In LTE-to-NR mobility, the handover or redirection decision is normally based on a combination of:
LTE serving-cell signal level becoming weak enough, and
NR neighbor-cell signal level becoming strong enough.
From the diagram:
In Stage 1 , LTE is still good and NR is still weak, so LTE-to-NR HO should not be triggered.
In Stage 2 , the NR neighbor signal is improving, but the required combined LTE/NR mobility condition is not yet fully satisfied.
In Stage 3 , the NR neighbor signal has crossed the required NR threshold, while the LTE serving-cell signal has degraded enough to justify moving the UE from LTE to NR. This is the first valid stage where LTE-to- NR HO can be triggered.
In Stage 4 , NR is already clearly strong, but the handover could already have been triggered earlier in Stage 3.
NEW QUESTION # 19
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