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Huawei H12-891_V1.0 Exam Syllabus Topics:

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

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Huawei HCIE-Datacom V1.0 Sample Questions (Q168-Q173):

NEW QUESTION # 168
What about the description of IGMP Snooping, is it correct?

A. IGMP Snooping establishes a MAC multicast address table by listening for IGMP packets sent by the host
B. IGMP Snooping does not consume the CPU of the switch
C. IGMP Snooping runs at the link layer and is a multicast constraint mechanism on Layer 2 Ethernet switches that manages and controls multicast groups
D. IGMP Snooping solves the problem of multicast messages broadcasting in layer 3

Answer: A,C

NEW QUESTION # 169
If you need to configure routing policies on one router. Which of the following parameters does an administrator use to route when deploying a routing policy?( Multiple select).

A. Application
B. Size of the packet
C. Protocol
D. Throughput
E. Identification of a specific terminal system

Answer: A,B,C,E

NEW QUESTION # 170
s the following description of THE MUX VLA N in huawei switches correct?

A. Each Separate VLAN can bind multiple Principal VLANs
B. Under the same VLAN, muX VLANs can be mixed with SuperVLANs
C. MUX VLAN ??Principal VI-AN ?Subordinate VI-AN ???Separate VLAN ? Isolate VLAN
D. The Principal port can pass the answer to all ends within the MUX VLAN

Answer: D

NEW QUESTION # 171
In the following figure, R1, R2, R3, and R4 all belong to OSPF area 0. The link costs are marked in the figure.
The Loopback0 addresses of R1, R2, R3, and R4 are advertised to OSPF. R1, R2, and R3, which are R4 clients, use Loopback0 to establish an iBGP peer relationship with R4. The directly connected network segment 172.20.1.4/32 of R4 is advertised to BGP. Which of the following statements are correct about the direction of traffic from R1 to 172.20.1.4/32?

A. Packet loss occurs during both the power-off and startup processes of R3.
B. If the stub router on-startup command is run on R3, packet loss occurs during the power-off process of R3 but no packet loss occurs during the startup process of R3.
C. The preferred path is R1-R3-R4.
D. The preferred path is R1-R2-R4.

Answer: B,C

Explanation:
Let's analyze the scenario and each statement carefully based on OSPF path selection and BGP behavior in Huawei routers.
# Option A: The preferred path is R1-R3-R4.
According to the OSPF cost values:
R1-R3-R4: Cost = 1 + 1 = 2
R1-R2-R4: Cost = 2 + 2 = 4
OSPF chooses the lowest-cost path to reach a destination. Therefore, R1 will prefer the R1-R3-R4 path to reach 172.20.1.4/32.
Huawei Datacom Reference:
" OSPF selects routes based on the shortest path calculated using link costs. The router always selects the path with the lowest cost. " (Source: HCIE-Datacom Study Guide v3.0 - OSPF Path Selection, Chapter 5)
# Option B: If the stub router on-startup command is run on R3, packet loss occurs during the power-off process of R3 but no packet loss occurs during the startup process of R3.
When R3 is powered off, OSPF needs to reconverge, which causes temporary packet loss.
When R3 starts up, it will advertise itself as a stub router using the stub-router on-startup command. This tells OSPF not to use R3 as a transit path during the startup period, thus preventing traffic blackholing.
Huawei Datacom Reference:
" stub-router on-startup command prevents a newly started router from being used as a transit node by OSPF, allowing routing to remain stable during convergence. " (Source: HCIE-Datacom Study Guide v3.0 - OSPF Stub Router Functionality, Chapter 6.2)
# Option C: The preferred path is R1-R2-R4.
This is incorrect because the OSPF path cost via R2 is higher (4) than the cost via R3 (2).
# Option D: Packet loss occurs during both the power-off and startup processes of R3.
Incorrect. As explained above, when the stub-router on-startup command is used, packet loss is avoided during startup, but still occurs during power-off since the alternate path requires convergence.

NEW QUESTION # 172
Which of the following statements are correct about authentication points and policy enforcement points in Huawei ' s free mobility solution?

A. When receiving user traffic, the authentication point enforces a policy to process the traffic based on the source or destination security group corresponding to the source or destination IP address of the traffic.
B. The authentication point and policy enforcement point can be deployed on different devices.
C. The policy enforcement point executes inter-group policies based on security groups.
D. The authentication point and policy enforcement point must be deployed on the same device.

Answer: B,C

Explanation:
In Huawei'sFree Mobility solution:
Authentication Point (AP): Identifies users and associates them with aSecurity Group Tag (SGT)upon access.
Policy Enforcement Point (PEP): Enforces policiesbetween different security groups, such as allowing or denying traffic.
Key points:
Ais correct - The PEP enforces inter-group access based on defined policies.
Bis incorrect - AP and PEPcan be on separate devices, offering deployment flexibility.
Cis incorrect - Thepolicy enforcementhappens at thePEP, not the AP. AP ' s job is to authenticate and tag traffic.
Dis correct - AP and PEP can be deployed ondifferent devices.
Correct answers: A, D
Reference:Huawei HCIE-Datacom V1.0 Study Guide -Chapter: Free Mobility and User-Centric PolicySection: Role of Authentication and Enforcement Points

NEW QUESTION # 173
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