Purchase Huawei : H31-311-ENU Exam Materials and then pass exam easily
Updated: Nov 06, 2026
No. of Questions: 190 Questions & Answers with Testing Engine
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Huawei H31-311-ENU Exam Overview:
| Certification Vendor: | Huawei |
|---|---|
| Exam Name: | Huawei Certified ICT Associate - Transmission |
| Exam Number: | H31-311-ENU |
| Passing Score: | 600/1000 |
| Available Languages: | Chinese, English |
| Real Exam Qty: | 60-70 |
| Exam Format: | Single choice questions, Scenario-based questions, True/False, Multiple choice questions |
| Exam Price: | Approx. 200 USD (varies by region) |
| Related Certifications: | HCIA HCIP-Transmission HCIE-Transmission |
| Certificate Validity Period: | 3 years |
| Exam Duration: | 90 minutes |
| Recommended Training: | HCIA-Transmission Training (Huawei Talent Development) |
| Exam Registration: | Huawei Certification Official Portal |
| Sample Questions: | Huawei H31-311-ENU Sample Questions |
| Exam Way: | Online proctored exam or authorized test center |
| Pre Condition: | Basic knowledge of ICT and telecommunications concepts is recommended; no mandatory prerequisite certification. |
| Official Syllabus URL: | https://e.huawei.com/en/talent/#/cert |
Huawei H31-311-ENU Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| WDM Systems | - WDM principles and architecture - DWDM/CWDM applications |
| Transmission Fundamentals | - Basic concepts of transmission systems - Digital communication principles |
| SDH and OTN Technologies | - OTN fundamentals and multiplexing - SDH architecture and frame structure |
| Huawei Transmission Products | - Huawei optical transport equipment overview - Basic configuration and management |
| Optical Fiber Communication | - Optical transmission impairments and loss - Optical fiber types and characteristics |
| Transmission Network Operation & Maintenance | - Fault detection and troubleshooting - Network performance monitoring |
Huawei HCIA-Transmission(Huawei Certified ICT Associate-Transmission) Sample Questions:
Automatic laser shutdown (ALS): When no optical signal is received, the ALS function automatically shuts down the corresponding optical module. This function protects onsite maintenance personnel.
- A. FALSE
- B. TRUE
Correct Answer: B 🗳️
When a working PQ1 board is faulty, the device performs TFS protection switching.
Which of the following statements about the switching process are correct? (Multiple Choice)
- A. If the protection PQ1 board is normal, the cross-connect board sends a switching message to the D75S corresponding to the faulty PQ1 board through the switching control bus.
- B. The D75S board responds to the switching message by transferring services to the shared protection bus and stopping sending services to the faulty PQ1 board.
- C. The cross-connect board detects that the PQ1 board is faulty through the board status bus.
- D. The protection PQ1 board receives and processes the services that are transferred from the D75S board to the protection bus to complete the protection switching.
Correct Answer: A,B,C,D 🗳️
Which of the following factors determines that the optical signal-to-noise ratio (OSNR) at the receive end decreases to a certain extent After signals are transmitted for a certain distance in a WDM system, the optical signal-to-noise ratio (OSNR) at the receive end decreases to a certain extent.
Which of the following is the main cause?
- A. EDFAs are used.
- B. New types of optical fibers are not used.
- C. Multiplexers and demultiplexers are used.
- D. Fiber attenuation is excessively high.
Correct Answer: A 🗳️
Which of the following clock working modes support the ITU-T G.781 standard? (Multiple Choice)
- A. Master/Slave
- B. Free-run
- C. Holdover
- D. Tracing
Correct Answer: B,C,D 🗳️
Which of the following statements about overhead bytes is incorrect?
- A. 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.
- B. A1 and A2 are framing bytes. These bytes are used to separate STM-1 frames in a signal flow.
- C. B1 is bit interleaved parity-8 (BIP-8). This byte is used to monitor bit errors at the regenerator section layer.
- D. E1 and E2 are orderwire bytes. These bytes are used to provide a voice channel for orderwire connections.
Correct Answer: B 🗳️
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