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Updated: Jul 21, 2026
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Huawei H12-931-ENU Exam Overview:
| Certification Vendor: | Huawei |
| Exam Name: | Huawei Certified ICT Expert – Transmission (HCIE-Transmission) Written Exam |
| Exam Number: | H12-931 / H12-931_V2.0 |
| Exam Duration: | 90 minutes |
| Passing Score: | 600/1000 |
| Exam Price: | USD $300 |
| Certificate Validity Period: | 3 years |
| Related Certifications: | HCIP-Transmission (H31-341) HCNA-Transmission (H31-311) |
| Exam Format: | Multiple Choice, Multiple Answer, True/False, Short Response, Case-Based |
| Real Exam Qty: | 60 |
| Available Languages: | English, Chinese |
| Sample Questions: | Huawei H12-931-ENU Sample Questions |
| Exam Way: | Written proctored exam delivered via Huawei's examination partners (e.g., Pearson VUE) in testing centers or online where available. |
| Pre Condition: | Recommended hands-on transmission network experience and prior HCIP/HCNA certifications. |
| Official Syllabus URL: | https://e.huawei.com/en/talent/cert/ |
Huawei H12-931-ENU Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Transmission Network QoS | - QoS Technologies - HQoS Implementation |
| Deploying and Commissioning OTN Devices | - OTN Configuration and Setup - Commissioning Practices |
| ASON Principles and Applications | - Protocol Operations - Automatic Switched Optical Network Concepts |
| MS-OTN Service Configuration | - Client and Server Configuration - Service Paths and Mapping |
| Introduction to iMaster NCE-T | - Functions and Features - Routine Operations & O&M Management - System Overview |
| Advanced Optical Technologies | - NG WDM Electrical Layer ASON - NG WDM Optical Layer ASON |
| Network Planning & Design | - Fiber Doctor System Fundamentals - Optical Doctor System Fundamentals - NG WDM Network Planning |
| Transmission Network Products | - Common Boards - Overview and Application Scenarios - Cabinets and Subracks |
| NHP Technology | - Principles and Application |
Huawei Certified Internetwork Expert-Transmission Sample Questions:
1. The insertion loss of the 40 sub-wavelength channels of D40 is 6dB, regardless of the influence of noise, when the signal is full-wave, the IN port optical power of D40 is X dBm. If the optical power of the IN port is reduced by 1dB, The measured value is () dBm. (Assuming that the optical power of each channel is balanced, lg40=1.6)
A) (X-6)
B) (X-23)
C) (X-5)
D) (X-22)
2. What are the main application scenarios of 1588 ACR? (multiple choice)
A) Traversing a leased third-party network
B) Huawei SDH network
C) Huawei PTN network
D) Traversing the asynchronous network
3. The sequence of downstream signals flowing through the functional blocks of the SL16 circuit board is
A) SPI, MST, RST, MSP, MSA, HPT
B) HPT, MSA, MSP, MST, RST, SPI
C) SPI, RST, MST, MSP, MSA, HPT
D) HPT, MSP, MSA, MST, RST, SPI
4. #1 and #2 are OTM network elements, point-to-point chain services, 1 channel, OAU light emission +4dbm at station A, -35dbm light at the SC2 board at station #2, -30dbm for the OBU board, and -30dbm for the OTU single board. There is no light on the board, what is the most likely cause of the failure?
A) Originating OTU board failure
B) #2 site optical amplifier board failure
C) #1/#2 line attenuation is too large
D) #2 site OTU board failure
5. The following are the time slot optimization steps (multiple choice)
A) Data collection and production optimization plan: Consistency verification of the customer's network management network element data, fiber and cable connection, and path data across the entire network: and process the deactivation business in the network, and confirm the one-way business in the network.
B) Analyze the resource evaluation report, focus on low-level crossover resources and line time slot utilization, focus on the location of bottlenecks, and confirm the principle of routing time slot optimization with customers.
C) Clean up discrete services before time slot optimization, delete junk services, and confirm with customers to complete or delete and reconstruct defective services.
D) Generate the time slot optimization plan in AMS5000 according to the optimization principle, and write the implementation plan.
Solutions:
| Question # 1 Answer: B | Question # 2 Answer: A,D | Question # 3 Answer: C | Question # 4 Answer: C | Question # 5 Answer: A,B,C,D |
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