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Huawei-certification H31-421

H31-421

Exam Code: H31-421

Exam Name: HCIP-LTE V1.0

Updated: Sep 25, 2026

Q&A Number: 195 Q&As

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Huawei H31-421 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: LTE Air Interface30%- Physical Layer Principles
  • 1. Reference Signals and Modulation
    • 2. Frame and Channel Structure
      • 3. MIMO and Antenna Techniques
        • 4. OFDM and SC-FDMA
          - Radio Interface Protocols
          • 1. Paging and Attach Procedures
            • 2. Random Access Procedure
              • 3. Uu Interface
                • 4. Cell Search Procedures
                  Topic 2: LTE Advanced Troubleshooting & Optimization30%- Fault Diagnosis
                  • 1. Antenna & Feeder System Faults
                    • 2. Interworking with 2G/3G
                      • 3. Transmission and Signaling Faults
                        - Radio Network Optimization
                        • 1. Coverage and Capacity Optimization
                          • 2. KPI Analysis and Improvement
                            Topic 3: eNodeB Configuration and Maintenance13%- Operation and Maintenance
                            • 1. Routine Maintenance
                              • 2. Performance Monitoring
                                - Basic Configuration
                                • 1. Radio and Transmission Configuration
                                  • 2. Parameter Planning
                                    Topic 4: LTE Signaling and Protocols27%- Protocol Architecture
                                    • 1. EPS Network Architecture
                                      • 2. MAC, RLC, PDCP, RRC
                                        • 3. S1, X2, Uu Interfaces
                                          - Key Signaling Procedures
                                          • 1. Attach and Detach
                                            • 2. Bearer Establishment and Release
                                              • 3. Handover and TAU

                                                Huawei HCIP-LTE V1.0 Sample Questions:

                                                Question #1
                                                Which interface from the LMT client to the eNodeB is required to maintain the eNodeB at the local end? (The board is a UMPT)

                                                A. FE/GE1
                                                B. FE/GE0
                                                C. USB
                                                D. ETH


                                                Question #2
                                                Which of the following command can be used to modify the eNodeB's near-end maintenance address?

                                                A. MOD OMCH
                                                B. SET LOCALIP
                                                C. MOD LOCALIP
                                                D. ADD OMCH


                                                Question #3
                                                Which of the following channels can carry HARQ feedback and scheduling request at the same time (Scheduling Request)?

                                                A. PUSCH
                                                B. PRACH
                                                C. PUCCH
                                                D. SRS


                                                Question #4
                                                One slot size of the FDD-LTE frame structure is 0.5 ms.

                                                A. True
                                                B. False


                                                Question #5
                                                Which of the following is a function of UPEU board?

                                                A. provide 2 route RS485 signal interface and 8-way switch signal interface, switch input only supports dry contact and OC (Open Collector) input
                                                B. -48V DC or + 24V DC input power is converted to support the +12V working power supply
                                                C. Environmental monitoring (including temperature and humidity, flooding, smoke)
                                                D. provide the system clock


                                                Solutions:

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

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