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

OSPF (Open Shortest Path First) Router-LSA (Type 1 LSA)describesall directly connected OSPF linksof a router and their types. Thefollowing link types can appear in a Router-LSA:

Point-to-Point (P-2-P) (B)– Represents adirect connection between two routers.

Virtual Link (Vlink) (C)– Used toconnect an area to the backbone (Area 0)when a direct connection is unavailable.

Stub Network (StubNet) (D)– Represents anetwork with only one exit point(e.g., a loopback interface or passive interface).

Incorrect Option:

TransNet (A) – Incorrect!

Transit networks appear in Network LSAs (Type 2), not Router LSAs.

Reference from Huawei HCIE-Datacom Documentation:

Huawei OSPF Configuration Guide – Router-LSAs and Link Types

HCIE-Datacom Training Material – OSPF LSAs and Topology Advertisement

Comprehensive and Detailed In-Depth Explanation:

TheHuawei SD-WAN SolutionusesHTTP/2as the primary protocol toreport device performance datato the controller.

HTTP/2is chosen for itshigh efficiency, low latency, and enhanced data transfer speed.

It supportsbidirectional communicationbetween devices and the iMaster NCE-Campus controller.

While protocols likeNetFlowandSNMPare traditionally used for monitoring, Huawei SD-WAN specifically usesHTTP/2for real-time performance reporting and control due to its modern web-based architecture.

Comprehensive and Detailed Explanation:

R2 is anArea Border Router (ABR), meaning itconnects multiple OSPF areas(Area 0 and Area 1).

ABRs generate Router-LSAs for each area they belong to.

SinceR2 is part of both Area 0 and Area 1, it must generateRouter-LSAs (Type 1) for both areas.

R2 does not forward Router-LSAs between areas; instead, it generatesSummary LSAs (Type 3)to exchange routing information between areas.

Thus, the correct answer isD.

????Reference:Huawei HCIE Datacom – OSPF LSA Types and ABR Behavior

Understanding Huawei’s Free Mobility Solution

Huawei’sFree Mobility solutionis designed to ensure that users can seamlesslyaccess the networkregardless of their physical location while maintainingconsistent policies.

????Key Components in Free Mobility Solution:

1️⃣iMaster NCE-Campus (Answer A - Core Role)

Manages network policies & user access.

Implementscentralized policy control & orchestration.

2️⃣Policy Enforcement Device (Answer B - Core Role)

Ensures thatuser policies (such as QoS, security, VLANs) are applied dynamically.

Typically aswitch or gatewayenforcing access control.

3️⃣Policy Control Device (Answer D - Core Role)

Stores anddynamically assigns policies based on user role & device type.

Works closely withiMaster NCE-Campus.

????Why is C (Authentication Device) NOT a Core Role?

❌Authentication devices (such as aRADIUS or AAA server) arenot a core componentof Huawei’sFree Mobilitysolution.

They are part of thebroader network security frameworkbutnot mandatoryfor Free Mobility.

Real-World Application:

Used inenterprise & campus networkswhereemployees, guests, and IoT devices need seamless accesswhile maintaining security policies.

✅Reference:Huawei HCIE-Datacom Guide – Free Mobility Architecture & Policy Management