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  1. Home
  2. Huawei Certification
  3. H12-891_V1.0 Exam
  4. Huawei.H12-891_V1.0.v2026-06-05.q295 Dumps
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Download Now

Question 36

Port isolation can be deployed on an Ethernet network to implement both Layer 2 communication and Layer 3 isolation, making the networking more flexible.

Correct Answer: A
Comprehensive and Detailed Explanation:
Port isolation is a feature used to enhance security and network segmentation by restricting communication between certain switch ports at Layer 2 while allowing them to communicate through Layer 3.
* Layer 2 Communication: Devices within the same VLAN can communicate with an upstream gateway or router.
* Layer 3 Isolation: Devices cannot communicate directly at Layer 2 but must pass through a Layer 3 device (e.g., a router or firewall).
* Use Case: Typically used in enterprise networks, hotel networks, and campus networks to prevent unwanted direct communication between clients.
Thus, the statement is correct, and the answer is TRUE.
# Reference: Huawei HCIE Datacom Official Guide - Ethernet Port Isolation
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Question 37

The network administrator is ready to use the 6to4 automatic tunnel to carry IPv6 data on the IPv4 network, and the IPv4 address of the router interface is 1381485210, so the corresponding tunnel address is
2001:8a0e:55d2:1:230:65ff:fe2:9a6?

Correct Answer: A
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Question 38

If ISIS is used to transmit SIDs on an SR network, the node SIDs advertised by a Level-2 router are transmitted only within the same area.

Correct Answer: B
Comprehensive and Detailed In-Depth Explanation:
WhenIS-ISis used as theIGP (Interior Gateway Protocol)to advertiseSegment Routing (SR) SIDs, theLevel-2 (L2) routeradvertisesnode SIDs globally across the entire IS-IS domain, not just within a single area.
Level-1 (L1) routersonly advertise within the local area, butL2 routersdistribute information across multiple areas, enabling inter-area reachability.
Therefore, the statement isFALSE.
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Question 39

When configuring a static VXLAN tunnel, you need to manually configure the _____, VTEP IP address, and ingress replication list. (Enter only uppercase letters.)

Correct Answer:
VNIInstatic
Explanation:
VXLAN tunnel configuration, you donot use a control planelike BGP EVPN. Instead, youmanually configureall necessary forwarding parameters, including:VNI (VXLAN Network Identifier): Identifies the VXLAN segment.VTEP IP Address: The remote tunnel endpoint.Ingress Replication List: Required for multicast emulation (flooding/BUM traffic) in the absence of a multicast control plane.Whenconfiguring statically, theVNIis essential to map Layer 2/3 services to the correct VXLAN segment.Thus, the correct word to complete the sentence is:VNICorrect answer: VNI Reference:Huawei HCIE-Datacom V1.0 Study GuideChapter:VXLAN FundamentalsSection:Static VXLAN Configuration and Manual Tunnel Parameters
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Question 40

An SRv6 Policy can be either statically configured on a device or dynamically generated by the controller and then delivered to the device.

Correct Answer: A
Understanding SRv6 (Segment Routing over IPv6) Policies
🔹 What is an SRv6 Policy?
A traffic engineering (TE) mechanism used in SRv6-enabled networks.
Defines a set of Segment Routing (SR) paths that direct packets through a predefined set of waypoints.
Uses SRv6 SIDs (Segment Identifiers) instead of MPLS labels.
🔹 How Can SRv6 Policies Be Configured?
✅ Static SRv6 Policy Configuration:
Manually configured by network administrators.
Used in predictable, fixed network paths.
✅ Dynamic SRv6 Policy Generation:
Created dynamically by an SDN controller (e.g., Huawei iMaster NCE).
The controller analyzes network conditions and adjusts paths automatically based on traffic load and link failures.
Why is the Answer TRUE?
✅ SRv6 policies can be configured manually or dynamically delivered by a controller.
✅ SDN-based SRv6 solutions improve network automation and traffic engineering efficiency.
Real-World Application:
Cloud Data Centers: Uses dynamic SRv6 policies for optimal traffic distribution.
5G Transport Networks: Uses SRv6 TE for low-latency service guarantees.
✅ Reference: Huawei HCIE-Datacom Guide - SRv6 Policy and SDN Integration
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