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| Certification Vendor: | Huawei |
|---|---|
| Exam Name: | HCIE-Datacom V1.0 (Written Exam) |
| Exam Number: | H12-891_V1.0 |
| Exam Duration: | 90 minutes |
| Passing Score: | 600/1000 |
| Certificate Validity Period: | 3 years |
| Real Exam Qty: | 60-70 |
| Exam Price: | 300 USD |
| Related Certifications: | HCIP-Datacom-Core Technology HCIE-Datacom V1.0 (Lab Exam) H12-892_V1.0 |
| Available Languages: | Chinese, English |
| Exam Format: | Drag-and-drop, Multiple-choice, Single-choice, True/false, Fill-in-the-blank |
| Recommended Training: | Huawei Official Training - HCIE-Datacom V1.0 |
| Exam Registration: | Pearson VUE Huawei Talent Official |
| Sample Questions: | Huawei H12-891_V1.0 Sample Questions |
| Exam Way: | Online proctored or onsite at authorized test centers |
| Pre Condition: | Recommended to hold HCIP-Datacom-Core Technology certification; 5+ years of relevant network engineering experience suggested; must pass written exam before taking lab exam |
| Official Syllabus URL: | https://e.huawei.com/en/talent/certification/exam/H12-891_V1.0 |
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Huawei H12-891_V1.0 (HCIE-Datacom V1.0) Certification Exam is a challenging exam, and candidates are expected to have a solid understanding of the concepts and technologies covered in the exam. However, with proper preparation and training, it is possible to pass the exam on the first attempt.
NEW QUESTION # 205
Which of the following IEEE standards is specific to Gigabit Ethernet?
Answer: B,D
NEW QUESTION # 206
SR-MPLS is enabled on all routers. The label information encapsulated by R1 into a data packet is shown in the figure.
Which of the following is the forwarding path of the data packet?
Answer: C
Explanation:
Comprehensive and Detailed In-Depth
1. Understanding SR-MPLS (Segment Routing with MPLS):
Segment Routing (SR) leverages MPLS labels to define paths through the network.
The labels represent segments (nodes or specific paths) rather than traditional LDP or RSVP-TE labels.
The label stack determines the forwarding path through the network.
Top Label: Determines the next hop.
Next Label: After label pop, it indicates the subsequent hop.
2. Analyzing the Given Label Stack:
The label stack encapsulated by R1 is as follows:
Layer2: 2046
2013
2032
2024
2046
Layer3
The top label (2046) indicates that the next-hop router is R4.
After R4 pops the top label, the next label (2046) directs the packet to R6.
3. Forwarding Path Analysis:
Step 1: R1 sends the packet to R2 based on internal routing.
Step 2: R2 forwards the packet directly to R4 as dictated by the top label (2046).
Step 3: R4 pops the top label (2046) and checks the next label (again 2046), directing the packet to R6.
Step 4: R6 receives the packet as the final destination.
4. Why Option B is Correct:
The path R1-R2-R4-R6 matches the label stack processing in SR-MPLS.
The labels indicate the shortest path chosen by SR policies, which is R1 → R2 → R4 → R6.
The SR-MPLS label stack efficiently guides the packet through the optimal path without complex signaling.
Why Other Options Are Incorrect:
Option A (R1-R2-R3-R5-R6):
This path does not match the label sequence as the labels clearly indicate a direct path via R4, not through R3 and R5.
Option C (R1-R3-R2-R4-R6):
This path is longer and unnecessary, as the label stack indicates a more direct path via R2 and R4.
Reference:
Huawei HCIE-Datacom V1.0 Training Materials
Huawei Official Documentation: SR-MPLS Configuration Guide
RFC 8660 - Segment Routing with MPLS Data Plane
HCIE-Datacom Knowledge Base: Segment Routing and MPLS
NEW QUESTION # 207
R1 receives a common IPv6 packet from the CE and generates a packet carrying the SRH (Segment Routing Header), as shown in the figure. The packet is forwarded along the path R1 → R2 → R3 → R4. Identify the node type of each device based on their role in SRv6 processing.
Answer:
Explanation:
NEW QUESTION # 208
OSPF is deployed on a campus network to implement network interconnection. An engineer configures R2 as shown in the figure. Which of the following statements is incorrect about LSAs on the OSPF network?
Answer: A
Explanation:
# Analyze the Configuration:
[R2] acl 2000
[R2-acl-basic-2000] rule deny
[R2] ospf
[R2-ospf-1] area 1
[R2-ospf-1-area-0.0.0.1] filter 2000 import
[R2-ospf-1-area-0.0.0.1] quit
[R2-ospf-1] default-route-advertise always
# Understanding Key Concepts:
Type 3 LSAs (Inter-Area Routes):
Generated by ABRs to advertisesummary routesbetween areas.
Filtering Type 3 LSAsis possible using import filters (like in Area 1).
Type 5 LSAs (External Routes):
Flooded only within the same ASbutdo not enter stub or NSSA areas.
#Breakdown of the Options:
A). Type 5 LSAs are flooded in Area 1##Incorrect
If Area 1 is astub or NSSA, thenType 5 LSAs are not allowed.
Although the diagram does not explicitly say Area 1 is a stub/NSSA,real deployments often use stub areas at the edge (like Area 1).
More importantly,the filter is applied to Area 1, and there isno redistributionof external routes into Area 1 in the config.
Therefore, Type 5 LSAs wouldnot be floodedthere.
B). Type 3 LSAs are not flooded in Area 1##Correct
The command filter 2000 import with ACL rule deny meansType 3 LSAs are filtered from Area 0 into Area 1.
C). Type 3 LSAs are not flooded in Area 2##Correct
There isno filter applied to Area 2, so thiscould be false,butsince the question asks for the incorrect statement, this is not the answer.
D). Type 5 LSAs are flooded in Area 2##Correct
Area 2 is not shown to be stub or NSSA, and there's no filter or restriction configured.
Hence,Type 5 LSAs are allowedandflooded in Area 2.
#Correct answer: A. Type 5 LSAs are flooded in Area 1.
Reference:Huawei HCIE-Datacom V1.0 Study GuideChapter:OSPF Advanced ConfigurationSection:LSA Types and Filtering (Type 3 and Type 5)
NEW QUESTION # 209
The following description of Filter-Policy is correct?( Radio neck).
Answer: C
NEW QUESTION # 210
......
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