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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: SRAN Performance Optimization Fundamentals | 25% | - Key performance indicators (KPIs) definition and measurement - Network performance monitoring and analysis tools - Performance optimization principles and methodology |
| Topic 2: Advanced Optimization and SON Features | 10% | - Self-Organizing Networks (SON) use cases and optimization - Energy saving and advanced features |
| Topic 3: Quality of Service and Resource Management | 15% | - Radio resource management and optimization - QoS parameters, scheduling and admission control |
| Topic 4: Mobility and Handover Optimization | 20% | - Handover parameters and algorithms - Inter-RAT mobility and optimization - Mobility robustness and optimization |
| Topic 5: Coverage and Capacity Optimization | 30% | - Interference analysis and mitigation techniques - Capacity planning, load balancing and optimization - Coverage analysis, tuning and optimization |
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NEW QUESTION # 19
What is the role of admission control in 5G networks ?
Answer: C
Explanation:
The correct answer is D .
Admission control is responsible for deciding whether a new UE connection, bearer, service, or session can be accepted by the cell without negatively affecting existing users and services.
In 5G RAN, admission control checks available radio resources such as:
* PRB availability
* PDCCH/PUCCH capacity
* UE context capacity
* QoS requirements
* GBR or non-GBR bearer requirements
* Cell load and congestion status
It does not directly manage modulation schemes; that is handled by link adaptation. It also does not directly increase spectral efficiency or optimize downlink throughput, although good admission control indirectly protects user experience and avoids overload.
So the main role of admission control is:
To check whether there are enough resources for new connections.
NEW QUESTION # 20
Identify the missing network components X, Y, and Z in the architecture diagram.
Answer: B
Explanation:
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.
NEW QUESTION # 21
The CB009425 feature provides several enhancements to improve the transmission link budget for VoNR, offering a better customer experience. Which statements are correct regarding this feature?
Answer: B
Explanation:
The correct answer is D.
The feature is focused on improving VoNR link robustness and user experience, especially near the cell edge or in difficult RF conditions. VoNR is sensitive to packet loss, delay, and uplink coverage limitations.
Therefore, link-budget improvement features commonly target BLER behavior, transport block sizing, and MCS robustness.
Statement A is correct because minimizing Packet Loss Rate, or PLR, directly improves VoNR speech quality and reduces mute, clipping, or robotic voice effects.
Statement B is correct because VoNR bearers can use specific initial BLER targets. A more suitable BLER target helps the scheduler choose a more robust MCS for voice traffic.
Statement C is correct because a configurable uplink minimum TBS, or Transport Block Size, helps ensure that small VoNR packets are transmitted efficiently and reliably.
Statement D is correct because MCS downgrade control can improve robustness by selecting a more conservative modulation and coding scheme for VoNR DRBs when radio conditions require it.
Therefore, all listed enhancements are part of the VoNR link-budget improvement concept:
A, B, C, and D.
NEW QUESTION # 22
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 # 23
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?
Answer: D
NEW QUESTION # 24
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