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| Section | Weight | Objectives |
|---|---|---|
| 5G Radio Network Optimization | 20% | - Fault diagnosis and troubleshooting - Performance indicator analysis - Coverage, capacity, and quality optimization - Drive test and signaling tracing |
| 5G Industry Applications & Private Network Solutions | 5% | - Vertical industry scenarios and KPI requirements - Private 5G network requirements and design |
| 5G Radio Network In-depth Principles | 30% | - 5G spectrum and frame structure - Massive MIMO and beamforming principles - 5G NR protocol stack and signaling procedures - 5G NR air interface fundamentals |
| 5G RAN Feature Application | 35% | - Mobility management and handover optimization - Carrier aggregation and dual connectivity - Power control and load balancing - Energy saving and coverage enhancement features |
| 5G Radio Network Planning | 10% | - Coverage and capacity planning - Interference analysis and mitigation - Parameter planning and configuration - Link budget calculation |
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NEW QUESTION # 13
For both the VoNR and EPS fallback solutions, the 5GC must interwork with the IMS.
Answer: B
Explanation:
The statement is true because both Voice over New Radio (VoNR) and Evolved Packet System (EPS) fallback provide voice services through the IP Multimedia Subsystem (IMS), although the radio-access and core-network procedures used to deliver the voice session differ.
In a VoNR deployment, the UE maintains its connection to the 5G Core (5GC) through NR. IMS signaling and media traffic are transported over an appropriate PDU session, with the 5GC supporting QoS-flow establishment, policy enforcement, and connectivity to the IMS network.
The Session Management Function (SMF) manages the corresponding PDU session, while the User Plane Function (UPF) provides user-plane connectivity toward the IMS data network.
EPS fallback applies when the 5G system cannot provide the required IMS voice service directly over its existing radio access.
In this case, the 5GC and NG-RAN coordinate a handover or redirection toward LTE connected to the EPC.
IMS voice establishment or continuation then takes place over the EPS.
Importantly, EPS fallback does not mean that the voice-media path remains anchored in the 5GC after fallback. It means that the 5G system participates in IMS voice-service support and coordinates access to EPS when necessary.
Official Reference: 3GPP TS 23.501, Sections 5.16.3.1-5.16.3.10, IMS Support and IMS Voice Service via EPS Fallback .
NEW QUESTION # 14
For type 0 allocation, bitmaps are used to map resources, and this is applicable to downlink scheduling with a small amount of data because the minimum scheduling unit for this type is one RBG.
Answer: B
Explanation:
The statement is false in the intended examination context because resource allocation type 0 uses Resource Block Group (RBG) granularity, which is generally coarser than the individual Resource Block (RB) allocation granularity available through type 1.
In NR downlink scheduling, the gNodeB allocates Physical Downlink Shared Channel (PDSCH) resources according to the configured frequency-domain resource-allocation method.
According to 3GPP TS 38.214, type 0 allocation uses a bitmap in which each bit indicates whether a corresponding RBG is assigned to the scheduled UE.
An RBG normally contains multiple consecutive RBs, with its nominal size determined by the Bandwidth Part (BWP) size and the configured RBG-size parameter.
For example, standardized nominal RBG sizes include 2, 4, 8, and 16 RBs.
Type 0 supports flexible selection of adjacent or nonadjacent RBGs, making it useful for scheduling across separated frequency-domain resources.
However, it may allocate more bandwidth than necessary when only a small amount of data must be transmitted.
Type 1 allocation identifies a starting RB and a contiguous allocation length, permitting finer control of the assigned resource quantity.
Therefore, type 0 is not inherently preferable for small-data scheduling merely because its minimum normal allocation is one RBG.
Official Reference: 3GPP TS 38.214, Sections 5.1.2.2.1 and 5.1.2.2.2, Downlink Resource Allocation Types
0 and 1 .
Technical warning / qualification: Type 0 is not prohibited for small packets. The incorrect part is the conclusion that RBG-level granularity makes it particularly suitable for small-data scheduling.
NEW QUESTION # 15
Which NAS security encryption algorithms are supported by an RG?
Select All that Apply
Answer: B,C,D
Explanation:
SNOW 3G, ZUC, and AES are standardized ciphering algorithms supported within the 5G security architecture for Non-Access Stratum (NAS) protection.
NAS security protects signaling exchanged between the UE and the Access and Mobility Management Function (AMF), including registration, authentication-related procedures, mobility management, and applicable NAS transport messages.
3GPP TS 33.501 identifies three principal 128-bit non-null ciphering algorithm families.
128-NEA1 is based on SNOW 3G, a stream-cipher algorithm originally developed for mobile-network security applications.
128-NEA2 uses the Advanced Encryption Standard (AES) in Counter (CTR) mode.
128-NEA3 is based on ZUC, a stream cipher standardized for mobile telecommunications security.
The serving network selects a ciphering algorithm according to the UE security capabilities and the algorithms permitted by the network configuration.
Option A is incorrect because quantum encryption is not one of the standardized NAS ciphering algorithms defined in the referenced 3GPP specification.
An additional standardized option, NEA0, represents null ciphering, but it is not listed among the available answers.
Therefore, B, C, and D identify the applicable standardized non-null algorithm families.
Official Reference: 3GPP TS 33.501, Sections 5.11.1.1 and 5.11.2, Ciphering Algorithm Identifier Values and Requirements for Algorithm Selection .
Technical warning / qualification: The question uses RG without defining the abbreviation. The explanation verifies standardized 5G NAS ciphering algorithms, but whether a particular residential gateway supports all three depends on its implementation and advertised security capabilities. The wording should specify the intended gateway type.
NEW QUESTION # 16
Which of these statements about the downlink scheduling process are correct?
Select All that Apply
Answer: A,B,C
Explanation:
Options A, B, and D represent the intended downlink scheduling principles described in the updated question bank.
Downlink scheduling is controlled by the gNodeB, which assigns radio resources and selects transmission parameters according to channel conditions, traffic demand, interference, and retransmission requirements.
Option A: Interference randomization can be used as an interference-management technique in heavily loaded radio networks. Its purpose is to reduce persistent interference effects by varying the relevant transmission or resource-allocation characteristics. However, enabling a particular Huawei interference- randomization feature at high PRB utilization is an implementation-specific recommendation.
Option B: The gNodeB uses HARQ acknowledgment information reported by the UE to determine whether transmitted downlink data has been successfully decoded or whether retransmission may be required.
Option D: Channel Quality Indicator (CQI) feedback provides information about the radio channel and supports Modulation and Coding Scheme (MCS) selection. Higher-quality conditions generally permit higher- order modulation and more efficient coding.
Option C is incorrect because downlink scheduling does not universally require an explicit scheduling request initiated by the UE.
The gNodeB already manages downlink data queues and can schedule available downlink traffic according to the configured scheduling mechanism.
Therefore, A, B, and D are the intended selections.
Official Reference: 3GPP TS 38.214, Sections 5.1 and 5.2, PDSCH Procedures and CSI Reporting ; TS
38.321, Section 5.3.2, Downlink HARQ Operation .
Technical warning / qualification: Options B and D are supported by standardized mechanisms. Option A is a vendor-specific optimization recommendation and requires confirmation against the Huawei scheduling feature documentation for the relevant release.
NEW QUESTION # 17
Which of the following parameters determines the PRACH time-domain position?
Answer: C
NEW QUESTION # 18
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