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The HCIE-Datacom V1.0 certification exam is designed to evaluate the understanding of candidates regarding various data communication technologies, including IP networking, MPLS VPN, and WLAN, among others. H12-891_V1.0 exam consists of both theoretical and practical modules, with a focus on real-world scenarios that professionals face in their daily tasks. H12-891_V1.0 Exam is an essential credential for individuals working in network engineering, network operations, and network architecture roles.
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Huawei H12-891_V1.0 (HCIE-Datacom V1.0) Exam is a challenging test that requires extensive preparation and study. H12-891_V1.0 exam consists of both theoretical and practical components, which means that candidates must have hands-on experience in designing and implementing data communication networks. To pass the exam, candidates must be familiar with the latest networking technologies and best practices, and must be able to apply this knowledge to solve real-world problems.
NEW QUESTION # 233
YANG is a data modeling language for the definition of data sent over network management protocols such as NETCONF. Which of the following are basic YANG data models? (Select all that Apply)
Answer: A,B
Explanation:
The basic constructs in YANG data modeling include:
Leaf node - A single data element with a specific type (e.g., integer, string).
List node - A repeating set of elements, each structured the same.
Incorrect options:
A . Set node - ❌ Not a valid YANG construct.
D . Tree node - ❌ Not an individual data model element. The entire model forms a tree structure, but there is no "tree node" in YANG syntax.
Exact Extract - Huawei YANG Modeling Fundamentals:
"YANG defines elements such as leaf, list, container, choice, and leaf-list. 'Set' and 'tree' are not YANG node types." Reference:
HCIE-Datacom Guide - YANG Language and Modeling Concepts
Huawei NETCONF & YANG Developer Manual
NEW QUESTION # 234
When deploying BGP/MPLS IPVPN, OSPF's VPN route tag is not present
The extended properties of MP-BGP are passed only locally, only locally, and only meaningful on routers that receive MP-BGP routes and generate OSPF LSAs.
Answer: B
NEW QUESTION # 235
MPLS supports both static and dynamic LSP establishment. Which of the following protocols cannot dynamically establish LSPs in MPLS TE scenarios? (Select all that apply)
Answer: A,C,D
Explanation:
InMPLS Traffic Engineering (TE),Label Switched Paths (LSPs)can be established:
Statically: Manual configuration.
Dynamically: Typically viaRSVP-TE.
Protocol roles:
RSVP-TE:Used to dynamically establish and signal TE LSPs##
OSPF / IS-IS: Act asIGP protocolsand provide TE-related link-state information (like bandwidth) butdo not establish LSPs themselves## BGP: Used forroute advertisement, not forLSP setupin MPLS TE ## Correct answers: A, C, D Reference:Huawei HCIE-Datacom V1.0 Study Guide -Chapter: MPLS TE FundamentalsSection: LSP Establishment Mechanisms
NEW QUESTION # 236
As shown in the figure, SW1 and SW2 use asymmetric IRB (Integrated Routing and Bridging) forwarding, and PC1 and PC2 communicate with each other. Which of the following is the destination MAC address of the original data frame in the packet sent from VTEP1 to VTEP2?
Answer: B
Explanation:
Comprehensive and Detailed In-Depth Explanation:
1. Understanding VXLAN Asymmetric IRB Forwarding:
InVXLAN (Virtual Extensible LAN)networks, there are two types of IRB forwarding:Symmetric IRBandAsymmetric IRB.
InAsymmetric IRB, routing occurs only at the ingress VTEP (Virtual Tunnel Endpoint).
Theingress VTEP (VTEP1)encapsulates the original data frame and sends it to theegress VTEP (VTEP2)over the VXLAN tunnel.
Thedestination MAC addressof the original Ethernet frame is theMAC address of the Layer 3 gateway (VBDIF)at the egress VTEP.
2. Analyzing the Topology:
PC1 (172.16.2.1/24) withMAC Ais sending traffic to PC2 (172.16.1.2/24) withMAC D.
Both PCs are in different subnets, so inter-subnet routing is required.
VTEP1 (1.1.1.1)on SW1 is the ingress VTEP.
VTEP2 (2.2.2.2)on SW2 is the egress VTEP.
TheVXLAN Network Identifier (VNI)for the traffic is100.
SW1 has two VBDIF interfaces:
VBDIF10 (MAC B)- Interface for BD10 (172.16.2.254).
VBDIF20 (MAC C)- Interface for BD20 (172.16.1.254).
3. Packet Flow in Asymmetric IRB:
Step 1:PC1 sends a packet destined for PC2. The packet is routed at theingress VTEP (SW1)using theVBDIF interface (VBDIF10 with MAC B).
Step 2:Theingress VTEP (SW1)encapsulates the packet in aVXLAN header(VNI 100) and sends it toVTEP2.
Step 3:Theoriginal data frame inside the VXLAN packetmust have adestination MAC addressthat matches thegateway MAC address (VBDIF20 - MAC C)at theegress VTEP (SW2).
Step 4:On reachingVTEP2, the encapsulation is removed, and the original frame withdestination MAC Cis forwarded.
Step 5:VTEP2performs Layer 3 routing to forward the packet toPC2.
4. Why MAC C is Correct:
Inasymmetric IRB forwarding, the routing decision at the ingress VTEP ensures that thedestination MACin the original frame is set to theVBDIF (gateway) MAC of the egress VTEP.
Since theegress VTEP (SW2)hasVBDIF20 (MAC C)for the destination subnet (172.16.1.0/24), thedestination MAC addressof the original frame isMAC C.
References:
Huawei HCIE-Datacom V1.0 Training Materials
Huawei Official Documentation: VXLAN Configuration Guide
VXLAN Asymmetric IRB Forwarding Concept
HCIE-Datacom Knowledge Base: VXLAN and IRB Configurations
NEW QUESTION # 237
What are the ways to divide VLANs in Huawei switches? ( Multi-select)
Answer: A,B,C,E
NEW QUESTION # 238
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