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Huawei H12-891_V1.0 Exam Syllabus Topics:

Section	Weight	Objectives
Advanced Routing and Switching Technologies	37%	- Advanced Routing Protocols 1. IS-IS protocol principles and deployment 2. OSPF advanced features and optimization 3. BGP route control, policy and deployment - Advanced Switching Technologies 1. Multicast routing and deployment 2. Ethernet protection and reliability technologies 3. VXLAN and EVPN principles and application - Network Quality and Optimization 1. QoS mechanism and deployment 2. Traffic engineering and MPLS technology
Bearer WAN Planning and Deployment	15%	- High-level Technology Deployment 1. SRv6 principles and deployment 2. Network slicing and service bearing - Bearer Network Architecture 1. Typical bearer network structure and requirements 2. CloudWAN solution and application scenarios
Campus Network Planning and Deployment	23%	- Campus Network Architecture Design 1. Typical campus network structure and design principles 2. CloudCampus solution architecture and features - Campus Network Service Deployment 1. User access management and security 2. WLAN planning and deployment 3. Campus network management and operation
Network Automation Technologies and Practice	17%	- Automation Foundation 1. Network programming basis and protocols 2. YANG model and data modeling - Huawei Automation Solutions 1. API-based network operation and maintenance 2. Configuration automation and deployment 3. eSight and iMaster NCE tools
WAN Interconnection Network Planning and Deployment	8%	- WAN Service Optimization 1. WAN security and isolation design 2. WAN link reliability and load balancing - WAN Interconnection Technologies 1. Traditional WAN connection technologies 2. SD-WAN architecture and Huawei solution

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Huawei HCIE-Datacom V1.0 Sample Questions (Q156-Q161):

NEW QUESTION # 156
In the gRPC-based telemetry protocol, the data model layer consists of theRPC layer,telemetry layer, andservice data layer. Drag the.proto fileto the layer where the file should be located.

Answer:

Explanation:

Explanation:
A screenshot of a computer AI-generated content may be incorrect.

Comprehensive and Detailed In-Depth Explanation:
ThegRPC-based telemetry protocolutilizesprotocol buffers (.proto files)to define the structure and data format used in communication between a client and a server. In Huawei's telemetry architecture, these files are categorized based on their roles in the data model.
1. RPC Layer:
File:huawei-grpc-dialin.proto
TheRPC layer (Remote Procedure Call layer)handles communication between the client and server.
The filehuawei-grpc-dialin.protodefines thegRPC service interfaces, message structures, and procedures for remote method invocation.
It is essential forestablishing communicationandinvoking telemetry data collection.
Function:Managesdial-in and dial-out connectionsbetween the telemetry client and the server.
2. Telemetry Layer:
File:huawei-telemetry.proto
Thetelemetry layeris responsible forcollecting, packaging, and exporting telemetry data.
The filehuawei-telemetry.protocontains thedata modelused for telemetry reporting, includingstreaming data formatsandtelemetry messages.
It defines how thecollected datais organized and transmitted.
Function:Provides astructured way to export telemetry datain real-time or batch mode.
3. Service Data Layer:
File:huawei-debug.proto
Theservice data layercontains data models related todiagnostics, debugging, and operational data.
The filehuawei-debug.protois used tocollect debugging informationfrom network devices.
This file is crucial fortroubleshooting and monitoring the healthof the system.
Function:Facilitatesdebugging and diagnostic telemetry data collection.
Why This Mapping Is Correct:
The mapping is based on thefunctional role of each layerand thepurpose of each .proto filein the Huawei gRPC-based telemetry architecture.
Correctly identifying the file location is crucial foreffective telemetry configurationanddata collection.

NEW QUESTION # 157
A campus deployed both IPv4 and IPv6 networks for service testing, and ran IS-S to interconnect the networks. (The S-S routing protocol has good scalability and is widely used in the live network.) Regarding IS-IS extensibility, which of the following statements is true?

A. In order to support IPv6, IS-IS needs to add TLV to carry IPv6 address information
B. NLPID is a new type of TLV added by IS-IS to support IPv6
C. For IS-IS, adding new features simply adds a new TLV to
D. IS-IS uses the TLV structure to build messages, making lS-IS more flexible and extensible

Answer: A,C,D

NEW QUESTION # 158
As shown in the following topology, EBGP is running between ASI0O0, AS.203, AS.30, AS8400, and the neighbor relationship has been established as RECEIVed by AS4O0 When AS1OO issues a 1..11/2 CIDR segment BGP route, the path order recorded in the ASPath attribute is correct

A. 300,200,100
B. 400,300,200,100
C. 10,200,3
D. 100,200,300,400

Answer: A

NEW QUESTION # 159
When a Layer 3 switch sends IP packets originating from one VLAN to another LAN, which field in the following options is overridden?( Single choice questions).

A. Three layers of TTL
B. Layer 3 source address
C. Layer 3 Transport Protocol
D. Two-tier TTL
E. Layer 3 destination address

Answer: A

NEW QUESTION # 160
An SRLB is a set of user-specified local labels reserved for SR-MPLS. These labels are locally configured and have only local significance. Therefore, they are not advertised through the IGP.

A. FALSE
B. TRUE

Answer: B

Explanation:
Understanding SRLB (Segment Routing Local Block)
🔹 What is SRLB?
SRLB (Segment Routing Local Block) is a range of local MPLS labels used by Segment Routing (SR-MPLS).
These labels are only relevant to the local router and are not advertised to other routers.
🔹 Key SR-MPLS Label Blocks:
✅ SRGB (Segment Routing Global Block) - Globally significant labels shared among routers.
✅ SRLB (Segment Routing Local Block) - Locally significant labels, not shared.
Why is the Answer TRUE?
✅ SRLB labels are only locally defined and are NOT distributed via IGP (OSPF or IS-IS).
✅ They are used for local forwarding decisions within an SR-enabled router.
✅ Only SRGB labels are advertised to ensure consistent global label assignment.
Real-World Application:
Traffic Engineering (TE): Uses SRLB for custom local path optimizations.
Segment Routing Networks: Ensures scalable MPLS forwarding without requiring full LDP signaling.
✅ Reference: Huawei HCIE-Datacom Guide - Segment Routing Label Blocks (SRGB & SRLB)

NEW QUESTION # 161
......

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