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Huawei H12-891_V1.0 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Campus Network Planning and Deployment	23%	- Overlay Network (VXLAN) 1. BGP EVPN 2. VXLAN Gateway - Network Services 1. QoS 2. Network Security 3. WLAN - Underlay Network 1. IP Address Planning 2. Physical Layer Design - Campus Network Architecture 1. Hierarchical Design 2. Spine-Leaf Architecture
Topic 2: Advanced Routing and Switching Technology	37%	- IS-IS 1. Network Types 2. Configurations and Troubleshooting 3. Route Leaking 4. Basic Concepts 5. Addressing - BGP 1. Configurations and Troubleshooting 2. Basic Concepts 3. Routing Policies 4. Route Aggregation 5. Path Selection - OSPF 1. Route Calculation 2. Area Types 3. Configurations and Troubleshooting 4. Basic Concepts 5. LSA Types - Ethernet Switching 1. VLAN 2. STP/RSTP/MSTP 3. Stack & CSS 4. VXLAN - MPLS 1. LDP 2. MPLS VPN 3. Basic Concepts 4. Configurations 5. MPLS TE - Route Control 1. ACL 2. Route Filtering 3. Route-policy 4. IP Prefix List
Topic 3: Bearer WAN Planning and Deployment	15%	- SR (Segment Routing) 1. SR-MPLS 2. SRv6 - VPN Services 1. EVPN 2. L3VPN - Traffic Engineering 1. RSVP-TE 2. SR-TE 3. Flex-Algo
Topic 4: WAN Interconnection Network Planning and Deployment	8%	- Inter-AS VPN 1. Option B 2. Option A 3. Option C - MPLS VPN 1. Hub-Spoke 2. Full-Mesh - SD-WAN 1. Architecture 2. Orchestrator
Topic 5: Network Automation	17%	- Automation Technologies 1. RESTful API 2. Python Scripting 3. NETCONF/YANG 4. Ansible - iMaster NCE 1. Intent-Driven Networking - NCE (Network Cloud Engine) 1. Architecture 2. Deployment

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Huawei HCIE-Datacom V1.0 Sample Questions (Q291-Q296):

NEW QUESTION # 291
The following figure shows the inter-AS MPLS L3VPN Option C (Solution 2). ASBR-PE2 is connected to CE3 and runs eBGP.
To enable all CEs to communicate with each other, which of the following address families must peer relationships be enabled in the BGP process of ASBR-PE2?

A. VPNv4 address family
B. VPN instance unicast address family
C. BGP-LS address family
D. Unicast BGP address family

Answer: A,D

Explanation:
Understanding Inter-AS MPLS L3VPN Option C
# MPLS L3VPN provides Layer 3 VPN services over an MPLS backboneby using BGP to exchange VPN routes.
# Inter-AS MPLS L3VPN Option C (Carrier-to-Carrier Model) works as follows:
ASBRs (Autonomous System Boundary Routers) exchangeVPNv4 routes using MP-BGP.
ASBRsdo NOT store VPN routing tables. Instead, theyadvertise labeled IPv4 routesto enable inter-AS forwarding.
How ASBR-PE2 Enables Inter-AS Communication?
#VPNv4 Address Family (Answer A - Required)
Used to exchangeMPLS VPN routes between PE routers.
MP-BGP (Multiprotocol BGP) exchanges VPNv4 prefixesbetween ASBR-PE1 and ASBR-PE2.
#Unicast BGP Address Family (Answer D - Required)
Required to exchangeIPv4 labeled routesbetween ASBRs.
EnsuresMPLS label forwarding between AS100 and AS200.
#BGP-LS Address Family (Answer B - Not Required)
BGP-LS (BGP Link-State) is used for SDN controllersto learn topology information.
It isnot required for Inter-AS MPLS L3VPN.
#VPN Instance Unicast Address Family (Answer C - Not Required)
This is used forPE-CE communicationbut isnot required between ASBRs.
Why is the Answer A, D?
#VPNv4 routes enable inter-AS VPN communication.
#IPv4 unicast routes are required for ASBR-PE2 to forward packets across AS boundaries.
Real-World Application:
Service Provider Networks:Used incarrier-to-carrier MPLS VPN deployments.
Enterprise WAN Interconnection:Enablesmulti-AS MPLS VPN connectivityfor large enterprises.
#Reference:Huawei HCIE-Datacom Guide - Inter-AS MPLS L3VPN Option C (Carrier-to-Carrier Model)

NEW QUESTION # 292
Regarding the description of the permanent multicast address, the error is ?

A. All routers listen on 224002
B. All routers running the OSPF protocol listen to 224005
C. All routers running the PIM protocol listen on 22400100
D. All hosts and routers in the network segment listen on 224001

Answer: C

NEW QUESTION # 293
Which of the following statements about 802.1X authentication are correct?

A. In EAP termination mode, EAP packets are terminated and re-encapsulated into RADIUS packets on the network access device. The network access device and AAA server use the standard RADIUS protocol to implement authentication, authorization, and accounting.
B. 802.1X authentication uses EAPoL to exchange authentication information between the client, device, and authentication server.
C. In EAP relay mode, EAP packets are directly encapsulated by the network access device into RADIUS packets (that is, EAP over RADIUS, or EAPoR). The network access device and AAA server use EAPoR to perform authentication, authorization, and accounting.
D. EAPoL implements EAP encapsulation on an IEEE 802.3 network, whereas EAPoW implements EAP encapsulation on an IEEE 802.11 network.

Answer: A,B,C,D

Explanation:
802.1X Authentication Overview
802.1X is a port-based authentication mechanism used for secure network access control. It involves:
* EAPoL (Extensible Authentication Protocol over LAN) communication between the client (supplicant) and the switch (authenticator).
* RADIUS communication between the authenticator and the authentication server (AAA server).
# A. 802.1X authentication uses EAPoL to exchange authentication information.
* EAPoL (Extensible Authentication Protocol over LAN) is used to send authentication packets over Ethernet (IEEE 802.3) networks.
# B. In EAP termination mode, the network device terminates EAP packets and re-encapsulates them into RADIUS.
* The switch acts as an authentication proxy by terminating EAP sessions and converting authentication information into RADIUS format.
# C. EAPoL is for wired (802.3), EAPoW is for wireless (802.11).
* EAPoL (EAP over LAN) is used in wired Ethernet networks.
* EAPoW (EAP over Wireless) is used in Wi-Fi (802.11) networks.
# D. In EAP relay mode, EAP packets are encapsulated into RADIUS using EAPoR (EAP over RADIUS).
* The switch does not terminate the EAP session but instead forwards EAP messages to the AAA server inside RADIUS packets.
Reference from Huawei HCIE-Datacom Documentation:
* Huawei 802.1X Configuration Guide - EAPoL, EAPoW, and EAPoR
* HCIE-Datacom Training Material - AAA Authentication Modes

NEW QUESTION # 294
The following description is correct regarding route control

A. In Node 10, if-match community-fiter1 and f-match as-pah-fiter1 are "and the relationship
B. IBGP routes can be introduced using the impot-route BGP command
C. AS-path-fiter is for AS-path, which affects the routing of paths.
D. OSPF, ISIS, and BGP can issue default routes.

Answer: A,C,D

NEW QUESTION # 295
What is the wrong description of the function of OSPFv3 protocol authentication?

A. The OSPFv3 protocol header removes the Type and Automation fields
B. Huawei router OSPFv3 IPSec authentication can not only support transmission mode, but also support tunnel mode
C. OSPFv3 authentication relies on IPv6 packet authentication headers and encapsulation security net load headers
D. OSPFv3 can only establish a security alliance SA using manual mode

Answer: B

NEW QUESTION # 296
......

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