Prepare with Huawei H31-311-ENU exam practice material, pass for sure
Updated: Sep 09, 2026
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Huawei H31-311-ENU Exam Overview:
| Certification Vendor: | Huawei |
|---|---|
| Exam Name: | HCIA-Transmission (Huawei Certified ICT Associate-Transmission) |
| Exam Number: | H31-311-ENU |
| Exam Price: | 200 USD |
| Available Languages: | Chinese, English |
| Related Certifications: | HCIE-Transmission HCIP-Transmission |
| Exam Duration: | 90 minutes |
| Certificate Validity Period: | 3 years |
| Passing Score: | 600/1000 |
| Real Exam Qty: | 60-70 |
| Exam Format: | True/False, Multiple-choice, Single-choice |
| Recommended Training: | HCIA-Transmission V3.0 Official Training |
| Exam Registration: | Huawei Talent Platform Pearson VUE |
| Sample Questions: | Huawei H31-311-ENU Sample Questions |
| Exam Way: | Online proctored or at authorized Pearson VUE/Huawei test centers |
| Pre Condition: | No mandatory prerequisites; basic knowledge of ICT and optical communication recommended |
| Official Syllabus URL: | https://support.huawei.com/learning/Certificate!toExamOutlineDetail?lang=en&nodeId=Node1000006043 |
Huawei H31-311-ENU Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: WDM and OTN Networks and Signal Flow | 5% | - OTN cross-connect and signal flow - WDM networking modes |
| Topic 2: Hardware Installation Basics | 10% | - Installation environment and safety requirements - Cabling and power supply |
| Topic 3: Basics of Optical Fiber Communication | 10% | - Optical transmission principles - Optical fiber characteristics and types - Optical passive components |
| Topic 4: Optical Transmission Technologies | 25% | - SDH principles and frame structure - OTN protocol and frame structure - WDM principles and system composition - Ethernet services over transmission networks |
| Topic 5: Overview of Optical Transmission Networks | 5% | - Network architecture and application scenarios - Development and classification of transmission networks |
| Topic 6: Commissioning and Configuration Basics | 20% | - Performance monitoring and alarm processing - Service configuration and protection - Initial configuration process |
| Topic 7: Routine Maintenance | 10% | - Common fault handling - Daily maintenance procedures |
| Topic 8: Optical Transmission Network Products | 10% | - OptiXtrans SDH/WDM product series - Hardware composition and functions |
| Topic 9: Network Management System | 5% | - Basic management functions - NCE-T/iManager U2000 overview |
Huawei HCIA-Transmission(Huawei Certified ICT Associate-Transmission) Sample Questions:
Which of the following statements about overhead bytes is incorrect?
- A. A1 and A2 are framing bytes. These bytes are used to separate STM-1 frames in a signal flow.
- B. B1 is bit interleaved parity-8 (BIP-8). This byte is used to monitor bit errors at the regenerator section layer.
- C. J0 is a regenerator section trace byte. This byte is used to repeatedly transmit a section access point identifier, so that the receive end can verify its continuous connection to the specified transmit end.
- D. E1 and E2 are orderwire bytes. These bytes are used to provide a voice channel for orderwire connections.
Correct Answer: A 🗳️
The number of bit error blocks on each VC-4 channel is detected by B3 at the receive end. At the same time, the information is sent back to the transmit end through Q, and HP-REI and HP-FEBBE are reported at the transmit end.
- A. G1 (b5-b8)
- B. K3 (b1-b4)
- C. J (b1-b4)
- D. G1 (b1-b4)
Correct Answer: D 🗳️
When the J1 byte mismatch occurs, the () alarm is reported and services may be interrupted.
- A. LP_TEM
- B. HP_TIM
- C. HP_SLM
- D. RS_TEM
Correct Answer: B 🗳️
In a WDM system, using a dielectric thin film filter (TFF) is ideal when fewer than () wavelengths are used.
- A. 20
- B. 8
- C. 16
- D. 4
Correct Answer: C 🗳️
During service configuration, there are two timeslot modes. Huawei uses the interleaved timeslot mode by default.
- A. FALSE
- B. TRUE
Correct Answer: A 🗳️
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