H12-891_V1.0 Exam Assessment - H12-891_V1.0 Reliable Test Notes

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Huawei H12-891_V1.0 Exam Syllabus Topics:

SectionObjectives
Topic 1: Enterprise Network Architecture- Network design principles
  • 1. Hierarchical network architecture
    • 2. Scalability and high availability design
      Topic 2: IPv6 and Advanced IP Technologies- IPv6 deployment
      • 1. IPv6 addressing and transition
        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. ACL and traffic control
                  • 2. Basic network security design
                    Topic 6: Routing and Switching Technologies- IP routing protocols
                    • 1. IS-IS basics
                      • 2. OSPF
                        • 3. BGP
                          - Switching technologies
                          • 1. Ethernet switching mechanisms
                            • 2. VLAN and STP
                              Topic 7: WAN and VPN Technologies- MPLS fundamentals
                              • 1. VPN technologies
                                • 2. MPLS LDP and forwarding

                                  >> H12-891_V1.0 Exam Assessment <<

                                  H12-891_V1.0 Reliable Test Notes, Cost Effective H12-891_V1.0 Dumps

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                                  Huawei HCIE-Datacom V1.0 Sample Questions (Q18-Q23):

                                  NEW QUESTION # 18
                                  How many bits are there in the label field of MPLS ?

                                  Answer: B


                                  NEW QUESTION # 19
                                  As shown in the figure, all routing diagrams declare the loopback address in OSPF, where R2 does not return the address is 10022/32, it is advisable to tell AraD. The R3 loopback address is 10033/321001.1.0/24 external routing, in order to reduce the burden on the RI router, the configuration command is as follows:( Multiple choice questions)[Rlip ip-prefix 1 permit 001.1.024 [RLIJospfl [RL-ospf-1]filter-policy ip-prefix l import please ask the following description is correct?

                                  Answer: A,B,D


                                  NEW QUESTION # 20
                                  The RR (Route Reflector) is critical to the Huawei SD-WAN Solution, and its deployment mode varies based on the scenario. In which of the following modes can an RR be deployed?

                                  Answer: A,B,D

                                  Explanation:
                                  Understanding Route Reflectors (RRs) in Huawei SD-WAN
                                  In Huawei's SD-WAN Solution, BGP Route Reflectors (RRs) are used to reduce the number of BGP peer relationships and optimize routing scalability.
                                  # Key Functions of an RR in SD-WAN:
                                  * Centralizes BGP route distribution in large-scale SD-WAN networks.
                                  * Reduces full-mesh BGP peering complexity.
                                  * Improves network scalability and convergence time.
                                  Analysis of Each Deployment Mode:
                                  # B. Independent deployment of the RR
                                  * Correct: The RR is deployed as a standalone device, independent of the SD-WAN hub site.
                                  * Best for large-scale SD-WAN deployments requiring dedicated route control.
                                  # C. Co-deployment of the RR and hub site
                                  * Correct: The RR is co-located with the SD-WAN hub site, reducing infrastructure overhead.
                                  * Best for mid-sized SD-WAN deployments where the hub and RR functions can be combined.
                                  # D. Partially independent deployment of the RR
                                  * Correct: The RR is partially separated from the hub but still shares some resources.
                                  * Provides a balance between full independence and co-location.
                                  # A. Multi-area deployment of the RR (Incorrect Choice)
                                  * Multi-area RR deployment is not a common Huawei SD-WAN practice.
                                  * Huawei does not require separate RRs per area, as SD-WAN is based on centralized policy-based routing.
                                  Real-World Application:
                                  * Large Enterprise SD-WAN: Uses independent RRs to optimize global network routing.
                                  * Service Provider SD-WAN: Uses co-deployed RRs to reduce infrastructure costs while maintaining route scalability.
                                  # Reference: Huawei HCIE-Datacom Guide - BGP Route Reflectors in SD-WAN Architecture


                                  NEW QUESTION # 21
                                  The following statement about the application of BFD is correct?

                                  Answer: A,B,C,D


                                  NEW QUESTION # 22
                                  As shown in the figure, ARP broadcast suppression is enabled on VTEP1 in BD 20 (VNI 200).
                                  VTEP1 learns ARP information about PC2 through BGP EVPN routes.
                                  When VTEP1 forwards the ARP request for PC1's MAC address to VTEP2,
                                  What is the destination MAC address of the inner data frame?

                                  Answer: C

                                  Explanation:
                                  Understanding VXLAN and ARP Suppression in BGP EVPN
                                  VXLAN (Virtual Extensible LAN) is used to extend Layer 2 networks over Layer 3 infrastructure.
                                  VXLAN uses VTEPs (VXLAN Tunnel Endpoints) to encapsulate and forward Layer 2 traffic.
                                  BGP EVPN (Ethernet VPN) is used for MAC/IP address learning and distribution across VXLAN networks.
                                  How ARP Request Forwarding Works in This Scenario?
                                  1️⃣ ARP Broadcast Suppression Enabled (VXLAN Optimized Forwarding)
                                  Since ARP broadcast suppression is enabled on VTEP1, the ARP request is not flooded.
                                  Instead, VTEP1 checks its EVPN learned database to find PC2's MAC address (MAC C).
                                  2️⃣ VTEP1 Encapsulates the ARP Request
                                  VTEP1 encapsulates the ARP request in a VXLAN packet and sends it to VTEP2.
                                  The original ARP frame inside the VXLAN tunnel still has:
                                  Source MAC: MAC A (PC1's MAC)
                                  Destination MAC: MAC C (PC2's MAC, learned via EVPN)
                                  3️⃣ VXLAN Outer Headers
                                  The outer VXLAN header uses:
                                  Source IP: 1.1.1.1 (VTEP1)
                                  Destination IP: 2.2.2.2 (VTEP2)
                                  VNI (VXLAN Network Identifier): 200 (BD 20)
                                  4️⃣ VTEP2 Receives and Forwards the ARP Request
                                  VTEP2 decapsulates the VXLAN packet and forwards the original ARP request to PC2 (MAC C).
                                  This ensures that only the intended receiver (PC2) gets the ARP request, preventing unnecessary broadcast flooding.
                                  Why the Answer is MAC C?
                                  ✅ B. MAC C is Correct
                                  The destination MAC of the inner data frame is PC2's MAC (MAC C).
                                  This is because VTEP1 forwards the ARP request directly to VTEP2, which then forwards it to PC2.
                                  Why Other Answers Are Incorrect?
                                  ❌ A. MAC B (Incorrect)
                                  MAC B is VTEP1's MAC address, which is used in the outer VXLAN header, not in the inner Ethernet frame.
                                  ❌ C. MAC A (Incorrect)
                                  MAC A is the source MAC of the ARP request (PC1), not the destination.
                                  ❌ D. MAC D (Incorrect)
                                  MAC D is not mentioned in the topology, so it is irrelevant.
                                  📖 Reference: Huawei HCIE Datacom - VXLAN BGP EVPN and ARP Suppression


                                  NEW QUESTION # 23
                                  ......

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