Huawei Updated H12-891_V1.0 Exam Questions and Answers by avery

An IPsec Security Association (SA) includes the following critical components:

SPI (Security Parameter Index)

Destination IP address

Security Protocol (AH or ESP)

Encryption/Authentication algorithms

The Source IP address is not a defining parameter of an SA. SA is unidirectional and identified based on the SPI and destination address.

Exact Extract - Huawei Security Configuration Guide – IPsec Fundamentals:

“An SA is uniquely identified by the SPI, destination IP, and security protocol. The source address is not a determining factor in the SA.”

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.

NAFTIR (Network Address Flow Traffic Incoming Rate) policingis a traffic control mechanism that can only be applied toinboundtraffic.

Purpose:

Monitorsandlimitsthe traffic entering a network device.

Preventsupstream devices fromoverloadingthe network with excessive data.

Key Fact:Outbound policing requires different mechanisms likeQoS shapingortraffic scheduling.

✅Reference:Huawei HCIE-Datacom Study Guide - Traffic Policing and Shaping

Correct Order of Steps:

1️⃣Network planning

2️⃣Site design

3️⃣Device management

4️⃣Fabric management

5️⃣VN (Virtual Network) management

6️⃣Service deployment

Understanding the iMaster NCE-Campus Deployment Process

????iMaster NCE-Campus is Huawei’s AI-driven network automation and management platform for campus networks.

????The deployment follows a structured sequence to ensure a fully operational network.

Detailed Explanation of Each Step:

✅1️⃣Network Planning(First Step)

Defines the overallnetwork architecture, topology, and business requirements.

DeterminesWAN, LAN, and WLAN coveragefor the campus.

EnsuresIP addressing, VLANs, and security policiesare planned.

✅2️⃣Site Design(Second Step)

Createssite layoutsand determinesdevice placement(switches, APs, routers).

Definespower, cabling, and uplink requirementsfor optimal connectivity.

✅3️⃣Device Management(Third Step)

Onboards network devices (e.g., switches, APs, firewalls) into iMaster NCE-Campus.

Configuresinitial settingssuch asIP addresses, interfaces, and SNMP settings.

Ensuresdevices are registered and reachablein the management platform.

✅4️⃣Fabric Management(Fourth Step)

EstablishesVXLAN-based network fabricforautomated Layer 2/3 connectivity.

ConfiguresEVPN/VXLAN overlays, VTEPs, and underlay routing.

✅5️⃣VN (Virtual Network) Management(Fifth Step)

Definesvirtual networks (VNs) for different departments, tenants, or services.

ConfiguresQoS, ACLs, and network segmentation policies.

✅6️⃣Service Deployment(Final Step)

Activatesnetwork services like DHCP, security policies, and application access.

Ensures thatend-user connectivity and application traffic policies are in place.

Why Is This the Correct Order?

✅Each step builds upon the previous one, ensuring a smooth and structured deployment process.

✅Service deployment comes last because it finalizes user access and application connectivity.

Real-World Application:

Enterprise Campus Networks:Deployssecure, scalable campus connectivity with AI-based automation.

University Campuses & Smart Cities:UsesSDN-driven network segmentation and automationto simplify operations.

✅Reference:Huawei HCIE-Datacom Guide – iMaster NCE-Campus Deployment & Automation