Huawei HCIA-Transmission V2.5 : H31-311_V2.5 Exam

  • Exam Code: H31-311_V2.5
  • Exam Name: HCIA-Transmission V2.5
  • Updated: Aug 08, 2026
  • Q & A: 750 Questions and Answers

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About Huawei HCIA-Transmission V2.5 : H31-311_V2.5 Exam Questions

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Huawei H31-311_V2.5 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Packet Transport Network (PTN)15%- PTN Protection Mechanisms
- QoS Mechanisms
- MPLS-TP Principles
Topic 2: Huawei Transmission Products Overview15%- OSN 3800/5800/6800/8800 Series
- Product Portfolio and Positioning
- OSN 1800 Series
Topic 3: Optical Communication Basics10%- Optical Communication Principles
- Optical Fiber Types and Characteristics
- DWDM Fundamentals
Topic 4: OTN Technology25%- OTN Protection
- OTN Architecture and Structure
- ODU and OTU Mapping
- ROADM Technology
- WDM Principles
Topic 5: SDH/SONET Technology20%- SDH Multiplexing Principles
- SDH Protection Mechanisms
- SDH Frame Structure
- SDH Equipment and Interfaces
Topic 6: Transmission Network Maintenance15%- Network Commissioning
- Performance Monitoring
- Typical Troubleshooting
- Common Alarm Analysis

Huawei HCIA-Transmission V2.5 Sample Questions:

1. For OSN3500, which of the following boards provides centralized backup function for the +33V power supply of each board in the subrack?

A) AUX
B) COA
C) PIU
D) SCC


2. EDFA (Erbium Doped Fiber Amplifier) is a key component of the new generation of optical communication systems. Which of the following options are included in its characteristics?

A) High gain
B) High output power
C) Amplify any wavelength
D) Low noise index


3. Which of the following statements about the EFS4 circuit board are correct? (Multiple choice)

A) This board must be used together with the processed board
B) This board has four FE ports
C) The board interface is LC interface
D) The board supports Layer 2 switching


4. EPL service realizes exclusive use of ports and bandwidth. Different users may need to share resources. In order to isolate user data, which of the following methods cannot be used to solve this problem?

A) MPLS label
B) VLANID
C) QinQ Technology
D) Configure ERPS


5. Compared with the dense wavelength division multiplexing system, the sparse wavelength division multiplexing system greatly reduces the cost of the system and has very strong flexibility while providing a certain number of wavelengths and a transmission distance within 100 kilometers.

A) False
B) True


Solutions:

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

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