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Huawei H12-831_V1.0 Exam Syllabus Topics:

SectionObjectives
Topic 1: IP Network Technologies- IPv6 Deployment
  • 1. Dual-stack and tunneling technologies
    • 2. IPv6 addressing and transition mechanisms
      - IS-IS Routing Protocol
      • 1. Route convergence and optimization
        • 2. Level-1/Level-2 design
          Topic 2: Advanced Routing Protocols- BGP Configuration and Policy Control
          • 1. Route filtering and policy control
            • 2. BGP attributes and path selection
              - OSPF Advanced Features
              • 1. Route calculation and optimization
                • 2. LSA types and area types
                  Topic 3: Network Design and Troubleshooting- Enterprise Network Design
                  • 1. Hierarchical network architecture
                    • 2. High availability design principles
                      - Fault Diagnosis
                      • 1. Protocol convergence issues
                        • 2. Routing loop troubleshooting
                          Topic 4: MPLS and VPN Technologies- MPLS Fundamentals
                          • 1. LDP basics
                            • 2. Label switching mechanism
                              - VPN Implementation
                              • 1. Inter-AS VPN scenarios
                                • 2. L3VPN configuration principles
                                  Topic 5: Network Services and Optimization- QoS Fundamentals
                                  • 1. Congestion management mechanisms
                                    • 2. Traffic classification and marking
                                      - Multicast Technologies
                                      • 1. Multicast distribution models
                                        • 2. PIM protocol operations

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                                          Huawei HCIP-Datacom-Advanced Routing & Switching Technology V1.0 Sample Questions (Q145-Q150):

                                          NEW QUESTION # 145
                                          On the network shown in the figure, PC1 and PC2 are connected to the same switch (SW1) and belong to the same VLAN .

                                          Which of the following are possible causes of a communication failure between PC1 and PC2?
                                          Options:

                                          Answer: A,B,C,D

                                          Explanation:
                                          Comprehensive and Detailed In-Depth Explanation:
                                          1. Understanding the Network Setup
                                          * PC1 (192.168.1.1/24) and PC2 (192.168.1.2/24) are connected to SW1.
                                          * Both PCs are in the same VLAN, meaning communication should work without routing.
                                          * If there is a communication failure, it could be due to physical, VLAN, ARP, or port security issues.
                                          2. Evaluating Each Answer Option
                                          * Option A: " SW1's GE0/0/2 is shut down. "
                                          * Correct.
                                          * If GE0/0/2 is shut down, PC2 cannot send or receive traffic , causing communication failure.
                                          * Even if PC1 is working, PC2 will be unreachable.
                                          * # A is a valid cause.
                                          * Option B: " The link of SW1's GE0/0/1 is faulty. "
                                          * Correct.
                                          * If GE0/0/1 has a faulty link, PC1 cannot communicate with PC2 , causing failure.
                                          * Even if PC2 is working, PC1 will be unreachable.
                                          * # B is a valid cause.
                                          * Option C: " Incorrect static ARP entries are configured on the hosts. "
                                          * Correct.
                                          * If static ARP entries are incorrectly configured, PCs will map the wrong MAC addresses to IPs.
                                          * This will result in packet delivery failures , even if the physical network is working.
                                          * # C is a valid cause.
                                          * Option D: " Port isolation is configured on SW1. "
                                          * Correct.
                                          * Port isolation (or private VLAN) prevents direct communication between specific ports.
                                          * If port isolation is enabled on GE0/0/1 and GE0/0/2, PC1 and PC2 will be unable to reach each other.
                                          * # D is a valid cause.
                                          Final answer:
                                          # A, B, C, and D are correct.
                                          HCIP-Datacom-Advanced Routing & Switching Technology References:
                                          * Troubleshooting VLAN and Layer 2 Communication Issues
                                          * Impact of Port Isolation and Private VLANs on Communication
                                          * Static ARP Entry Configuration and Its Effects on Network Connectivity


                                          NEW QUESTION # 146
                                          Each OSPFv3 router generates a Link-LSA for each link. A Link-LSA describes information such as the link-local address, IPv6 address prefix, and port number associated with the link, and provides the link options to be set in the Network-LSA. It is transmitted only on the link.

                                          Answer: A

                                          Explanation:
                                          Yes, this is true. In OSPFv3:
                                          * Each router generates one Link-LSA per link .
                                          * The Link-LSA contains:
                                          * The router ' s link-local address
                                          * IPv6 prefixes associated with the interface
                                          * Options that are advertised to neighbors on the same link
                                          * It is not flooded throughout the OSPF area ; it is only sent on the local link (similar to a Hello packet ' s behavior).
                                          # Official Reference from Huawei:
                                          " Each router sends a Link-LSA on every attached link. This LSA is not flooded beyond the link and includes link-local address, prefix list, and interface options. "
                                          - [Huawei HCIA-Datacom OSPFv3 Chapter - LSA Types]


                                          NEW QUESTION # 147
                                          In the BGP/MPLS IP VPN network, PE and P devices exchange public network labels by running MP-BGP, so that P devices can forward data based on labels.

                                          Answer: B


                                          NEW QUESTION # 148
                                          The routing attributes of the three routing entries are shown in the figure. Assuming that the next hops of the three routing entries are all reachable, when these three routing entries are After the entries arrive at the BP router in order, by default, BGP will finally call a route entry?

                                          Answer: C


                                          NEW QUESTION # 149
                                          On the network shown in the figure, the DHCP server function is enabled on GEO/0/0 of R2, and the address pool is an interface address pool. When GEO/0/0 and GEO/0/1 of R1 function as DHCP clients, only one interface can obtain an IP address by default.

                                          Answer: A


                                          NEW QUESTION # 150
                                          ......

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