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Huawei H12-891_V1.0 Exam Syllabus Topics:

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

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Huawei HCIE-Datacom V1.0 Sample Questions (Q119-Q124):

NEW QUESTION # 119
As shown in the figure, all routers run OSPF, which is correct in the following statement:

A. R2 forwards the R1-generated Router LSA to R3
B. Both R2 and Zone 0 generate Router LSA
C. R2 generates Router LSA only in Zone 0
D. R2 Forwards the R3-generated Router LSA to R1

Answer: B

NEW QUESTION # 120
The following description of the GVRP interface registration mode in Huawei switches is correct?

A. When fixed registration mode is selected, the interface cannot propagate dynamic VLANs
B. When the normal registration mode is selected, allow the interface to dynamically register and unregister the VLAN. Logout here includes deleting dynamically learned VLANs and VLANs created natively by the administrator
C. When the interface layer two operating mode must be hybird
D. GVRP when the register mode with forbidden is selected, there are four types of interface registration mode

Answer: A

NEW QUESTION # 121
Which of the following statements is incorrect about intranet security design for a large or medium-sized virtualized campus network?

A. To secure data transmission, the CAPWAP tunnel between the AC and AP supports DTLS encryption.
B. In addition to terminal access security, air interface security must be considered during wireless network security design.
C. Intranet security refers to both wired and wireless network security.
D. Traffic suppression can be configured on the wired network to block broadcast traffic by shutting down interfaces.

Answer: D

Explanation:
Comprehensive and Detailed Explanation:
# Traffic suppression is used to control broadcast storms, but shutting down interfaces is NOT the correct way to block broadcast traffic.
# Correct Statements:# (B) Intranet security covers both wired and wireless networks.# (C) CAPWAP tunnels use DTLS encryption for security.# (D) Wireless security requires air interface protection against attacks.
# Reference: Huawei HCIE Datacom - Intranet Security Design

NEW QUESTION # 122
SR-MPLS is enabled on all routers. The label information encapsulated byR1into a data packet is shown in the figure.
Which of the following is the forwarding path of the data packet?

A. R1-R2-R4-R6
B. R1-R3-R2-R4-R6
C. R1-R2-R3-R5-R6

Answer: A

Explanation:
Comprehensive and Detailed In-Depth Explanation:
1. Understanding SR-MPLS (Segment Routing with MPLS):
Segment Routing (SR)leverages MPLS labels to define paths through the network.
The labels representsegments(nodes or specific paths) rather than traditional LDP or RSVP-TE labels.
Thelabel stackdetermines the forwarding path through the network.
Top Label:Determines thenext hop.
Next Label:After label pop, it indicates thesubsequent hop.
2. Analyzing the Given Label Stack:
The label stack encapsulated byR1is as follows:
Layer2:2046
2013
2032
2024
2046
Layer3
Thetop label (2046)indicates that thenext-hop routerisR4.
AfterR4pops the top label, thenext label (2046)directs the packet toR6.
3. Forwarding Path Analysis:
Step 1:R1sends the packet toR2based on internal routing.
Step 2:R2forwards the packet directly toR4as dictated by the top label (2046).
Step 3:R4pops the top label (2046) and checks the next label (again2046), directing the packet toR6.
Step 4:R6receives the packet as the final destination.
4. Why Option B is Correct:
The pathR1-R2-R4-R6matches thelabel stack processingin SR-MPLS.
Thelabels indicate the shortest pathchosen by SR policies, which isR1 # R2 # R4 # R6.
TheSR-MPLS label stackefficiently guides the packet through the optimal path without complex signaling.
Why Other Options Are Incorrect:
Option A (R1-R2-R3-R5-R6):
This path does not match thelabel sequenceas the labels clearly indicate adirect path via R4, not throughR3 and R5.
Option C (R1-R3-R2-R4-R6):
This path is longer and unnecessary, as thelabel stackindicates a moredirect path via R2 and R4.
References:
Huawei HCIE-Datacom V1.0 Training Materials
Huawei Official Documentation: SR-MPLS Configuration Guide
RFC 8660 - Segment Routing with MPLS Data Plane
HCIE-Datacom Knowledge Base: Segment Routing and MPLS

NEW QUESTION # 123
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 5 routes?

A. Route Distinguisher
B. GW IP Address
C. IP Prefix Length
D. MAC Address

Answer: D

Explanation:
Understanding BGP EVPN and VXLAN Routing
EVPN (Ethernet VPN) with VXLANis used fordata center networkingandL3 VPN interconnection.
#BGP EVPN Route Types & Their Purpose
Type 2:MAC/IP Advertisement Route (Carries MAC + IP)
Type 3:Inclusive Multicast Route (Carries VTEP Multicast Information)
Type 5:IP Prefix Route(Used for Layer 3 VXLAN Routing)
#What does Type 5 route contain?
#Route Distinguisher (RD):Identifies a unique VPN instance.
#GW IP Address:Specifies theGateway IPfor L3 VXLAN routing.
#IP Prefix Length:Defines theIPv4/IPv6 network maskfor routing.
#MAC Address is NOT included in Type 5
Why is Option B (MAC Address) Correct?
#MAC addresses are carried in EVPN Type 2 routes, NOT in Type 5.
#Type 5 routes focus on IP prefixes, not MAC forwarding.
#Real-World Application:
VXLAN L3 Gateways (EVPN Type 5)allow routers to forwardIP traffic across VXLAN tunnels, removing the need for traditionalL3 VPNs.
#Reference:Huawei HCIE-Datacom Guide - BGP EVPN and VXLAN Routing

NEW QUESTION # 124
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