Huawei H12-261_V3.0-ENU : HCIE-Routing & Switching (Written) V3.0

H12-261_V3.0-ENU real exams

Exam Code: H12-261_V3.0-ENU

Exam Name: HCIE-Routing & Switching (Written) V3.0

Updated: Sep 21, 2026

Q & A: 485 Questions and Answers

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Huawei H12-261_V3.0-ENU Exam Syllabus Topics:

SectionWeightObjectives
Network Management & Optimization10%- QoS and traffic scheduling
- Troubleshooting methodology
- SNMP and network monitoring
IPv6 Technologies15%- IPv6 Transition
  • 1. NAT64 and DNS64
    • 2. Dual-stack and tunneling technologies
      - IPv6 Routing Protocols
      • 1. OSPFv3 and IS-IS for IPv6
        • 2. BGP4+ and IPv6 interworking
          - IPv6 Basics
          • 1. IPv6 address structure and types
            • 2. ICMPv6 and neighbor discovery
              IPv4 Unicast Routing25%- BGP
              • 1. BGP route control and filtering
                • 2. BGP neighbor establishment
                  • 3. BGP attributes and path selection
                    - Routing Basics
                    • 1. Static routing and policy routing
                      • 2. Routing table and forwarding principles
                        - IS-IS
                        • 1. IS-IS protocol mechanism
                          • 2. Level-1/Level-2 routing
                            • 3. IS-IS and OSPF comparison
                              - OSPF
                              • 1. OSPFv2 principles and configuration
                                • 2. OSPF optimization and troubleshooting
                                  • 3. LSA types and area design
                                    Advanced Technologies & Security20%- High Availability
                                    • 1. VRRP principles and deployment
                                      • 2. BFD and link detection
                                        - Route Control
                                        • 1. Import and export routing control
                                          • 2. Filter-policy and route-policy
                                            - Network Security
                                            • 1. DHCP and ARP security
                                              • 2. URPF and anti-attack technologies
                                                • 3. ACL and traffic filtering
                                                  Layer 2 Technologies20%- Spanning Tree Protocols
                                                  • 1. STP protection mechanisms
                                                    • 2. STP/RSTP/MSTP principles and configuration
                                                      - Ethernet and VLAN
                                                      • 1. Link aggregation and load balancing
                                                        • 2. QinQ and VLAN mapping
                                                          • 3. VLAN principles and configuration
                                                            - High Reliability Technologies
                                                            • 1. RRPP and ERPS
                                                              • 2. Smart Link and Monitor Link
                                                                Multicast Protocols10%- Multicast Fundamentals
                                                                • 1. Multicast address and forwarding
                                                                  • 2. IGMPv1/v2/v3 and IGMP snooping
                                                                    - PIM Protocols
                                                                    • 1. PIM-DM and PIM-SM
                                                                      • 2. Multicast VPN and reliability
                                                                        • 3. Rendezvous Point and BSR

                                                                          Huawei HCIE-Routing & Switching (Written) V3.0 Sample Questions:

                                                                          Question #1

                                                                          As shown in the configuration, if the administrator configures OSPF on R1 but R1 cannot learn the routes of other routers, what are the possible reasons? (Multiple Choice)
                                                                          [R1] ospf
                                                                          [Rl-ospf-1] area 2
                                                                          [R1-ospf-1-area-0.0.0.2] network 10.0.13.1 0.0.0.0

                                                                          • A. The area ID configured by this router is different from the area ID of its neighbor router.
                                                                          • B. This router is not configured with authentication, but the neighbor router is configured with authentication.
                                                                          • C. The router's announcement network address does not match the interface mask
                                                                          • D. This router is not configured with an OSPF process ID.
                                                                          Reveal Solution  Discussion  0

                                                                          Correct Answer: A,B  🗳️

                                                                          Question #2

                                                                          Which of the following statements are true about IPSec VPN? (Multiple Choice)

                                                                          • A. Two routers establish IPSec VPN through aggressive mode, then only two packets are exchanged between the two devices to establish a tunnel.
                                                                          • B. Two routers establish IPSec VPN through the main mode. Starting from the fifth packet (including), the payload data is often encrypted.
                                                                          • C. Two routers can establish OSPF neighbor relationships through IPSec VPN tunnels and exchange intranet routes.
                                                                          • D. Savage mode can support NAT traversal, while main mode does not support NAT traversal
                                                                          Reveal Solution  Discussion  0

                                                                          Correct Answer: A,B  🗳️

                                                                          Question #3

                                                                          What is LSA for the flooding scope of the entire autonomous system in the OSPFv3?

                                                                          • A. Intra-Area-Pre fir-LSA
                                                                          • B. AS-external-LSA
                                                                          • C. Inter Area-Prefix-LSA
                                                                          • D. Link-LSA
                                                                          Reveal Solution  Discussion  0

                                                                          Correct Answer: B  🗳️

                                                                          Question #4

                                                                          Regarding BGP MED, which of the following descriptions are correct? (Multiple questions)

                                                                          • A. In BGP routing rules, the priority of MED is lower than AS Path, Praferred-Value, Local-Preference and Origin
                                                                          • B. The default value of BGP route MED is 0
                                                                          • C. By default, if there is no MED value in the route attribute, it will be treated as 0. If the bestroute med-none-as-maximum command is configured, the MED will be processed as the maximum value of 4294967295
                                                                          • D. By default, BGP routing rules can compare the MED of routes from different autonomous systems
                                                                          Reveal Solution  Discussion  0

                                                                          Correct Answer: A,B,C  🗳️

                                                                          Question #5

                                                                          Which of the following scenarios does not need to use RPF detection?

                                                                          • A. When establishing a shared tree to the RP in PIM SM
                                                                          • B. When the router in PIM SM receives the multicast data stream
                                                                          • C. When the RP in the PIM SM establishes a source tree to the multicast source
                                                                          • D. When receiving a pruning message in PIM SM
                                                                          Reveal Solution  Discussion  0

                                                                          Correct Answer: D  🗳️

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