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Huawei H12-891_V1.0 Exam Syllabus Topics:

SectionObjectives
Topic 1: IPv6 and Advanced IP Technologies- IPv6 deployment
  • 1. IPv6 addressing and transition
    Topic 2: Enterprise Network Architecture- Network design principles
    • 1. Hierarchical network architecture
      • 2. Scalability and high availability design
        Topic 3: Network Automation and Programmability- SDN and automation
        • 1. Network automation tools
          • 2. NETCONF/YANG basics
            Topic 4: Data Center and Virtualization Technologies- VXLAN and overlay networks
            • 1. Data center network virtualization
              Topic 5: Network Security and QoS- QoS mechanisms
              • 1. Traffic classification and shaping
                - Security mechanisms
                • 1. Basic network security design
                  • 2. ACL and traffic control
                    Topic 6: Routing and Switching Technologies- IP routing protocols
                    • 1. OSPF
                      • 2. BGP
                        • 3. IS-IS basics
                          - Switching technologies
                          • 1. VLAN and STP
                            • 2. Ethernet switching mechanisms
                              Topic 7: WAN and VPN Technologies- MPLS fundamentals
                              • 1. VPN technologies
                                • 2. MPLS LDP and forwarding

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                                  Huawei HCIE-Datacom V1.0 Sample Questions (Q222-Q227):

                                  NEW QUESTION # 222
                                  Fill in Blank
                                  On a VXLAN-based virtualized network, if the fabric networking mode is centralized gateway networking, the gateway is located on the _____ device. (Capitalize the first letter.)

                                  Answer:

                                  Explanation:
                                  SpineInVXLANcentralizedgatewaynetworking
                                  Explanation:
                                  SpineIn VXLAN centralized gateway networking, the default gateway (for both intra- and inter-subnet traffic) is placed on the Spine node, which acts as a centralized gateway device.This architecture simplifies routing and enables centralized control for inter-VNI routing. It is often contrasted with distributed gateway mode, where gateways reside on leaf nodes.Huawei Datacom Reference:"In centralized gateway mode, the spine node functions as the gateway and processes both inter-VNI routing and gateway services."(Source: HCIE-Datacom V1.0 Official Training - VXLAN & Fabric Networking Chapter, Section: VXLAN Gateway Deployment Modes)


                                  NEW QUESTION # 223
                                  Based on the figure, which of the following statements are correct?
                                  <R1>tracert 172.17.1.5
                                  1 10.1.12.2 40 ms 10 ms 10 ms
                                  2 10.1.24.2 30 ms 20 ms 20 ms
                                  3 10.1.34.1 20 ms 20 ms 20 ms
                                  4 10.1.13.1 20 ms 20 ms 10 ms
                                  5 10.1.12.2 20 ms 30 ms 20 ms
                                  6 10.1.24.2 30 ms 30 ms 30 ms
                                  7 10.1.34.1 50 ms 40 ms 40 ms
                                  8 10.1.13.1 20 ms 30 ms 30 ms

                                  Answer: C

                                  Explanation:
                                  Comprehensive and Detailed In-Depth Explanation:
                                  The traceroute output shows that the path from R1 to the destination 172.17.1.5 is looping. After reaching the IP 10.1.13.1, the path goes back to 10.1.12.2, repeating the previous hops. This indicates a routing loop, where R1 continuously forwards packets through a circular path, never reaching the destination. Routing loops typically occur due to inconsistent or incorrect routing table entries, often because of routing protocol misconfigurations.


                                  NEW QUESTION # 224
                                  NETCONF provides a set of mechanisms for managing network devices. NETCONF operations take place on a configuration datastore of network devices. Which of the following statements is incorrect about the configuration datastore?

                                  Answer: A

                                  Explanation:
                                  NETCONF defines datastores to manage device configurations:
                                  running: Active configuration in use
                                  candidate: Staging area for changes before applying
                                  startup: Configuration loaded on reboot
                                  NETCONF operations:
                                  <commit>: Applies changes from candidate → running → ✅
                                  <delete-config>: Deletes a specified datastore (e.g., startup) → ✅
                                  <validate>: Validates syntax/logic in the candidate datastore → ✅
                                  Statement D is incorrect: <commit> never submits config from startup to running - that's handled automatically at boot time, not through NETCONF commands.
                                  Correct answer: D


                                  NEW QUESTION # 225
                                  The free mobility function is deployed on the iMaster NCE-Campus on a campus network. Which of the following information should an administrator pay attention to?

                                  Answer: A,B,C,D

                                  Explanation:
                                  Comprehensive and Detailed In-Depth Explanation:
                                  Thefree mobility functionin iMaster NCE-Campus allows users to maintain consistent security policies regardless of their physical location within the campus network. To correctly implement this function, the administrator must:
                                  A: Define security groups:Group users and devices based on roles or functions.
                                  B: Deliver the inter-group policy:Apply policies that define how different security groups interact.
                                  C: Deploy a policy control matrix:Establish a matrix that specifies theaccess control policiesbetween security groups.
                                  D: Select the policy enforcement point:Choose devices or interfaces where policies are enforced, such as switches or routers.
                                  All four steps are crucial for achieving dynamic policy enforcement in a virtualized and mobility-oriented campus network.


                                  NEW QUESTION # 226
                                  To build a loopless Layer 2 network, which of the following schemes is optimal?( Single Choice)

                                  Answer: A


                                  NEW QUESTION # 227
                                  ......

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