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Last Updated: Jul 26, 2026

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Huawei H31-421 Practice Q&A's

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Huawei H31-421 Exam Syllabus Topics:

SectionObjectives
LTE Air Interface Fundamentals- OFDM / SC-FDMA Principles
  • 1. Uplink and downlink modulation
    • 2. Resource block structure
      - Physical Layer Procedures
      • 1. Channel coding and multiplexing
        • 2. Synchronization and reference signals
          QoS and Service Management- Bearer Management
          • 1. EPS bearer concepts
            • 2. QoS Class Identifier (QCI)
              - Policy Control
              • 1. PCRF functions
                • 2. Traffic prioritization
                  LTE Network Optimization and Troubleshooting- Performance Optimization
                  • 1. Coverage and capacity tuning
                    • 2. Interference analysis
                      - Fault Diagnosis
                      • 1. Signaling analysis
                        • 2. Network KPIs monitoring
                          Mobility Management- Tracking and Location Update
                          • 1. TAU procedures
                            • 2. Paging mechanism
                              - Handover Procedures
                              • 1. Inter-RAT mobility
                                • 2. Intra-LTE handover
                                  LTE System Architecture- EPC (Evolved Packet Core)
                                  • 1. MME, SGW, PGW roles
                                    • 2. Core network architecture
                                      - E-UTRAN Overview
                                      • 1. Radio access network structure
                                        • 2. eNodeB functions and interfaces

                                          Huawei HCIP-LTE V1.0 Sample Questions:

                                          1. Which of the following clock sources is supported by eNodeB? (Multiple Choice)

                                          A) BITS clock synchronization
                                          B) Internal clock
                                          C) GPS clock synchronization
                                          D) Galileo
                                          E) IEEE 1588V2 clock synchronization


                                          2. How many resource allocation types does PDSCH have?

                                          A) 1
                                          B) 4
                                          C) 3
                                          D) 2


                                          3. "To do the first surface data compression and decompression" is the function in which layer of the following?

                                          A) RLC
                                          B) PDCP
                                          C) PHY
                                          D) MAC


                                          4. Which of the following messages in the tracking area information will be sent to MME to do consistency test?

                                          A) RRC : RRC connection request
                                          B) S1AP : E-RAB setup request
                                          C) S1AP : Initial context setup request
                                          D) S1AP : S1 setup request


                                          5. What is the purpose of the Path Switch Request process?

                                          A) Request to switch the downstream GTP tunnel endpoint from one endpoint to another (from SGW to eNodeB)
                                          B) Request to switch the upstream GTP tunnel endpoint from one endpoint to another (from eNodeB to SGW)


                                          Solutions:

                                          Question # 1
                                          Answer: A,B,C,E
                                          Question # 2
                                          Answer: C
                                          Question # 3
                                          Answer: B
                                          Question # 4
                                          Answer: D
                                          Question # 5
                                          Answer: A

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