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Huawei H12-891_V1.0 (HCIE-Datacom V1.0) Certification Exam is a professional-level certification exam that tests the skills and knowledge of individuals in the field of data communication. H12-891_V1.0 exam is designed for those who aspire to become certified HCIE-Datacom professionals and want to demonstrate their expertise in data communication technologies.

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To be eligible for the exam, candidates must have a minimum of five years of experience in the field of data communication, as well as a solid understanding of networking fundamentals. They must also possess a strong technical background, excellent problem-solving skills, and the ability to work independently and as part of a team.

Huawei HCIE-Datacom V1.0 Sample Questions (Q20-Q25):

NEW QUESTION # 20
The correct description of the scene shown in the following figure is:

A. LSDB
B. No neighbor relationship can be established between R1 and R2
C. R1, which exists in both Level-1 and Leve-2, can ping the interface address of R2 loopback0
D. R there is a route to R2 loopback0 100

Answer: A,B,D

NEW QUESTION # 21
Which of the following statements aboutSR-MPLS Policy candidate pathsare correct?

A. An SR-MPLS policy can contain multiple candidate paths with the preference attribute.
B. The valid candidate path with the highest preference functions as the primary path of the SR-MPLS Policy.
C. Load balancing can be implemented among candidate paths and among segment lists.
D. A candidate path can contain multiple segment lists, with each segment list carrying the weight attribute.

Answer: A,B,C,D

Explanation:
Comprehensive and Detailed Explanation:
#SR-MPLS Policy candidate pathsare used forflexible path selectionandload balancinginSegment Routing (SR-MPLS)networks.
#Correct Statements:
#(A)Each candidate path can havemultiple segment lists, each with itsown weightfor load balancing.
#(B)Load balancingis supported bothbetween candidate pathsandwithin segment lists.
#(C)AnSR-MPLS Policy can contain multiple candidate paths, each with apreference value.
#(D)Thecandidate path with the highest preference is selected as the primary path.
#Reference:Huawei HCIE Datacom - SR-MPLS Policy Path Selection

NEW QUESTION # 22
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?

A. R1-R2-R4-R6
B. R1-R2-R3-R5-R6
C. R1-R3-R2-R4-R6

Answer: A

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 # 23
There is an existing router interface serial 0 in OSPF area 1 , well will interface Serial 0 is set to silent interface. So what is the impact of this setting?

A. OSPF receives a route update answer from the neighbor.
B. OSPF does not establish any adjacency relationships through the junction
C. OSPF does not join the routes learned from the connector to the local routing table
D. OSPF establishes usable adjacencies through this junction

Answer: B

NEW QUESTION # 24
When deploying the ISIS protocol in an IPv6 environment , the following statement is correct (single choice).

A. By default, the DIS priority for broadcast network interfaces at Level-1 and Level-2 is 1
B. In broadcast networks, IPv4 and The DIS priority for IPv6 can be set separately
C. In the same broadcast network. If each router supports both IPv4 and IPv6 The DIS for IPv4 and IPv6 must be the same device
D. IS-IS is configured under the finger port is ISIS silent, this interface will not send ISIS packets, but will receive ISIS packets

Answer: C

NEW QUESTION # 25
......

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