Try Huawei : H12-891_V1.0-ENU valid & accurate questions and answers
Updated: Sep 06, 2026
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Huawei H12-891_V1.0-ENU Exam Overview:
| Certification Vendor: | Huawei |
|---|---|
| Exam Name: | HCIE-Datacom V1.0 (Written) |
| Exam Number: | H12-891_V1.0-ENU |
| Exam Price: | USD 300 |
| Exam Duration: | 90 minutes |
| Real Exam Qty: | 60 |
| Exam Format: | Drag-and-drop, Single choice, True/False, Multiple choice, Short response |
| Certificate Validity Period: | 3 years |
| Related Certifications: | HCIP-Datacom-Advanced Routing & Switching Technology V1.0 HCIP-Datacom-Core Technology V1.0 HCIA-Datacom V1.0 |
| Available Languages: | English, Chinese |
| Passing Score: | 600/1000 |
| Sample Questions: | Huawei H12-891_V1.0-ENU Sample Questions |
| Exam Way: | Written exam delivered at Huawei-authorized testing centers. Candidates pursuing HCIE certification must also pass the corresponding lab exam. |
| Pre Condition: | No mandatory prerequisite. HCIP-Datacom knowledge and extensive enterprise network deployment experience are strongly recommended. |
| Official Syllabus URL: | https://e.huawei.com/en/talent/cert/#/careerCert |
Huawei H12-891_V1.0-ENU Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Datacom Basic Knowledge | 15% | - Core Protocol Technologies
|
| Topic 2: Advanced Datacom Technologies and Applications | 35% | - Network Security
|
| Topic 3: Campus Network Solution | 25% | - Campus Network Deployment
|
| Topic 4: Network Planning, Operations and Maintenance | 10% | - Operations and Maintenance
|
| Topic 5: Network Automation and Programmability | 15% | - Automation Technologies
|
Huawei HCIE-Datacom V1.0 Sample Questions:
Question 1
OSPF fast convergence is an extended feature to improve the convergence speed of routing, in which PRC works by speeding up routing computation by performing path calculations only on the affected nodes when the network topology changes.
A. FALSE
B. TRUE
Question 2
When you deploy LLQ, you need to configure bandwidth parameters, what is the significance of bandwidth parameters? (Single choice questions).
A. The parameter should be as small as possible. It means that the bandwidth is always preserved, and even if the LLQ is set, changing the parameters will reduce the available bandwidth of the interface
B. It represents a reference CIR to calculate the burst size D of the built-in tactician token bucket Changing parameters is an option because LLQ always takes precedence over other queues
C. Provides a built-in policer to limit the maximum available bandwidth of a low-latency queue during congestion
Question 3
The default configured switch has an empty MAC address table at this time, and Host A connected to the switch issues the first unicast data frame, so what will the switch do after receiving the teaching system? (Single choice questions).
A. The switch records the source MAC address of the data frame and floods the data frame
B. based on the mesh MAC address of the data frame. The switch caches the data frame and waits for the destination host to send the effect frame before forwarding it
C. The switch will drop the data frame
D. The switch will forward data to interface
Question 4
Regarding the sliding window of TCP, what are the following descriptions that are enough to be wrong? (Multiple choice question)
A. The TCP sliding window allows multiple packets to be sent before an acknowledgment is received
B. After the retransmission timer times out, the sender has not received an acknowledgment and will retransmit unacknowledged data
C. The sender does not need to transmit messages of full window size
D. Sliding window size can only be increased or remain unchanged
E. The sender declares the initial window size
F. The receiver needs to acknowledge the sender's packet
Question 5
What is the correct description of the scene shown in the following figure?
A. R1 simultaneously exists level-1 and Level-2 LSDB
B. R1 has a route to R2 loopback 010022/32
C. R1 can ping the interface address of R2 loopback 0
D. There is no neighbor relationship between R1 and R2
Solutions:
| Question 1 Answer: A | Question 2 Answer: C | Question 3 Answer: A | Question 4 Answer: D,E | Question 5 Answer: A,B |
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