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Updated: Sep 03, 2026
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Huawei H31-331 Exam Overview:
| Certification Vendor: | Huawei |
|---|---|
| Exam Name: | HCNP Building Carrier OTN Transmission Network (H31-331) |
| Exam Number: | H31-331 |
| Certificate Validity Period: | 3 years |
| Exam Format: | Multiple Response Questions, Multiple Choice Questions |
| Related Certifications: | Huawei Certified ICT Associate (HCIA) Huawei Certified ICT Professional (HCIP) – Transmission |
| Available Languages: | Chinese, English |
| Recommended Training: | Huawei Learning – Transmission Courses |
| Exam Registration: | Pearson VUE Huawei Exams Huawei Talent Certification |
| Sample Questions: | Huawei H31-331 Sample Questions |
| Exam Way: | Pearson VUE test center or online proctored exam |
| Pre Condition: | Recommended: basic knowledge of IP networking and optical transmission fundamentals (HCIA-level knowledge). |
Huawei H31-331 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Optical Fiber Transmission Technologies | - Dispersion and impairment management - DWDM system principles and components - Optical amplification (EDFA, Raman) |
| Topic 2: Fundamentals of Optical Transport Networks (OTN) | - OTN architecture and layered structure (ODUk/OTUk) - Digital wrapper and encapsulation principles - OTN framing and overhead structure |
| Topic 3: Advanced Optical Network Technologies | - Next-generation converged transport networks - ASON/GMPLS principles in transport networks - IP over OTN integration concepts |
| Topic 4: Carrier-Class OTN Equipment and Huawei Solutions | - Service mapping and cross-connect principles - Board types and functional modules - Huawei OptiX transmission platform overview |
| Topic 5: OTN Network Planning and Design | - Network topology design (ring, mesh, linear) - Protection schemes (1+1, 1:1, SNCP-like protection) - Capacity planning and wavelength allocation |
| Topic 6: Operation, Maintenance, and Troubleshooting | - Alarm analysis and fault localization - Performance monitoring and KPIs - Routine maintenance procedures |
Huawei Certified Network Professional-Building Carrier OTN Transmission Network Sample Questions:
Question 1
The monitoring channel bit rate is different, and the test result of the optical monitoring board interface index has little effect, and the OSC spectral index requirement is much higher than that of the OTU board.
A. False
B. True
Question 2
Which of the following alarms triggers optical line protection switching in the optical line protection of the NG WDM 40G systems?
A. OTU3_LOF
B. MUT_LOS
C. OTU3_PM_DEG
D. R_LOS
Question 3
Regarding the removal of the path operation from the network management, which of the following statements is wrong.
A. Deleting a path from the network layer deletes only the WDM path of the network layer on the NMS side.
B. Delete the path from the NE layer and delete the NE side with the path of the NE layer.
C. The business is not interrupted after the path is deleted from the network layer.
D. After the path is deleted from the network layer and the network element, the service is interrupted.
Question 4
What are the possible reasons why optical line protection cannot be automatically recovered? (multiple choice)
A. The protection group "recovery mode" is "non-recovery".
B. Artificially performed manual switching, lock switching, or forced switching commands.
C. The working channel has failed.
D. The protection channel has failed.
Question 5
Which of the following layers is the overhead of the segment monitoring overhead SM?
A. OTUK
B. ODUK
C. OPUK
D. OMS
Solutions:
| Question 1 Answer: A | Question 2 Answer: B | Question 3 Answer: D | Question 4 Answer: A,B,C | Question 5 Answer: A |
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