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Huawei H12-891_V1.0 Exam Syllabus Topics:

Section	Objectives
Topic 1: Routing and Switching Technologies	- IP routing protocols 1. IS-IS basics 2. BGP 3. OSPF - Switching technologies 1. VLAN and STP 2. Ethernet switching mechanisms
Topic 2: IPv6 and Advanced IP Technologies	- IPv6 deployment 1. IPv6 addressing and transition
Topic 3: Enterprise Network Architecture	- Network design principles 1. Scalability and high availability design 2. Hierarchical network architecture
Topic 4: Network Automation and Programmability	- SDN and automation 1. NETCONF/YANG basics 2. Network automation tools
Topic 5: Data Center and Virtualization Technologies	- VXLAN and overlay networks 1. Data center network virtualization
Topic 6: WAN and VPN Technologies	- MPLS fundamentals 1. VPN technologies 2. MPLS LDP and forwarding
Topic 7: Network Security and QoS	- Security mechanisms 1. Basic network security design 2. ACL and traffic control - QoS mechanisms 1. Traffic classification and shaping

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Huawei HCIE-Datacom V1.0 Sample Questions (Q10-Q15):

NEW QUESTION # 10
In a scenario where a VXLAN tunnel is dynamically established through BGP EVPN, which of the following fields is not carried in BGP EVPN Type 2 routes?

A. L2VNI
B. IP Prefix
C. IP Address
D. L3VNI

Answer: B

Explanation:
BGP EVPN Route Types in VXLAN:
BGP EVPN Type 2 Route (MAC/IP Advertisement Route)
Used for host reachability advertisement.
Carries MAC and IP address information of endpoints.
Does not carry an IP Prefix field (Type 5 routes handle prefixes).
Correct Explanation of Answer Choices:✅ IP Address (B) is included - Used for host mobility and reachability.✅ L3VNI (C) is included - Used for Layer 3 VXLAN routing.✅ L2VNI (D) is included - Used for Layer 2 VXLAN bridging.❌ IP Prefix (A) is not included in Type 2 routes - It is part of EVPN Type 5 routes for prefix advertisement.
Reference from Huawei HCIE-Datacom Documentation:
Huawei VXLAN BGP EVPN Configuration Guide - Type 2 vs. Type 5 Routes
HCIE-Datacom Training Material - VXLAN Overlay Networks and BGP EVPN

NEW QUESTION # 11
IPV6 multicast introduces the concept of multicast scope, which of the following ways is the multicast scope concept implemented? Multi-select

A. When the group shake source sends IP6 multicast data, the TTL value of the packet is set to limit the transmission range of the group shake
B. There is a special field in the IPv6 multicast address that specifies the propagation range of multicast.
C. Multicast scope is just a concept of spreading scope, and there is no specific technical implementation.
D. During network configuration, the administrator uses the configuration command at the edge of the network to limit the multicast scope.

Answer: B,D

NEW QUESTION # 12
There are multiple SR-MPLS TE tunnel protection mechanisms. FRR (Fast Reroute) constructs a virtual node to convert multiple identical route advertisement nodes into a single route advertisement node, and then computes the backup next hop of the virtual node based on the TI-LFA algorithm. In this way, traffic can be quickly switched when a fault occurs.
What is the name of this protection mechanism?

Answer:

Explanation:
TILFA
Explanation:
✔ TI-LFA (Topology Independent Loop-Free Alternate) is an enhanced Fast Reroute (FRR) mechanism used in SR-MPLS networks.
✔ How TI-LFA Works:
A virtual node is created, aggregating multiple route advertisements.
Backup paths are precomputed using Segment Routing (SR) SIDs.
When a link failure occurs, traffic is rerouted in <50ms without waiting for IGP convergence.
📖 Reference: Huawei HCIE Datacom - TI-LFA and SR-MPLS TE Protection

NEW QUESTION # 13
When the BFD detection intervals on both ends are 30ms and 40ms, are the following options described correctly?

A. BFD sessions cannot be established
B. BFD session can be established, which takes 30ms after negotiation
C. BFD sessions can be established, each occurring at its own interval
D. BFD session can be established, which takes 40ms after negotiation A

Answer: C

NEW QUESTION # 14
If you need to configure routing policies on one router. Which of the following parameters does an administrator use to route when deploying a routing policy?( Multiple select).

A. Identification of a specific terminal system
B. Throughput
C. Protocol
D. Size of the packet
E. Application

Answer: A,C,D,E

NEW QUESTION # 15
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