HCIE-Routing&Switching (Written)(Huawei Certified ICT Expert-Routing & Switching): H12-261-ENU Exam

"HCIE-Routing&Switching (Written)(Huawei Certified ICT Expert-Routing & Switching)", also known as H12-261-ENU exam, is a Huawei Certification. With the complete collection of questions and answers, PrepPDF has assembled to take you through 525 Q&As to your H12-261-ENU Exam preparation. In the H12-261-ENU exam resources, you will cover every field and category in HCIE-R&S Certification helping to ready you for your successful Huawei Certification.

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  • Exam Code: H12-261-ENU
  • Exam Name: HCIE-Routing&Switching (Written)(Huawei Certified ICT Expert-Routing & Switching)
  • Certification Provider: Huawei
  • Corresponding Certification: HCIE-R&S
  • Updated: Nov 05, 2026
  • No. of Questions: 525 Questions & Answers with Testing Engine
  • Download Limit: Unlimited

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Huawei H12-261-ENU Exam Syllabus Topics:

SectionObjectives
Topic 1: Network Security and QoS- Quality of Service
  • 1. Congestion management and scheduling
    • 2. Traffic classification and marking
      - Network security basics
      • 1. ACL design and filtering
        • 2. Basic security hardening
          Topic 2: Advanced IP Network Fundamentals- IPv4/IPv6 addressing and design
          • 1. IPv6 deployment scenarios
            • 2. Address planning and subnetting
              - Network convergence principles
              • 1. Scalability considerations
                • 2. Control plane vs data plane concepts
                  Topic 3: Network Troubleshooting and Optimization- Performance optimization
                  • 1. Routing optimization strategies
                    • 2. Latency and congestion analysis
                      - Fault diagnosis methodology
                      • 1. Layered troubleshooting approach
                        • 2. Protocol analysis techniques
                          Topic 4: MPLS and VPN Technologies- VPN implementation
                          • 1. Inter-AS VPN scenarios
                            • 2. L2VPN and L3VPN design
                              - MPLS fundamentals
                              • 1. Label switching and forwarding
                                • 2. LDP and MPLS architecture
                                  Topic 5: Routing Protocols and Optimization- EGP protocols
                                  • 1. Route reflection and confederation
                                    • 2. BGP policy control and attributes
                                      - IGP protocols
                                      • 1. OSPF advanced design and optimization
                                        • 2. IS-IS fundamentals and deployment
                                          Topic 6: Switching and Layer 2 Technologies- Ethernet switching
                                          • 1. VLAN design and trunking
                                            • 2. STP/RSTP/MSTP mechanisms
                                              - High availability mechanisms
                                              • 1. Redundancy and loop prevention
                                                • 2. Link aggregation (Eth-Trunk)

                                                  Huawei HCIE-Routing&Switching (Written)(Huawei Certified ICT Expert-Routing & Switching) Sample Questions:

                                                  As shown in the figure, the ISIS neighbor relationship between R1 and R2 has just been established. which of the following statement is true about the database synchronization process between R1 and R2?

                                                  • A. The packet sent from R1 to R2 is a CSNP packet.
                                                  • B. The packet sent from R1 to R2 is a PSNP packet.
                                                  • C. The packet sent from R1 to R2 is a Hello packet.
                                                  • D. The packet sent from R1 to R2 is an LSP packet.
                                                  Reveal Solution  Discussion  0

                                                  Correct Answer: A  🗳️

                                                  Which statements regarding IBGP or EBGP neighbors are true? (Multiple Choice)

                                                  • A. IBGP peers must be directly connected; otherwise, the IBGP-multihop option must be configured.
                                                  • B. EBGP neighbor peering must use the physical interface address to establish peering.
                                                  • C. BGP updates from an IBGP peer are propagated to other IBGP and EBGP peers.
                                                  • D. IBGP neighbor peering can be established using the loopback interface address.
                                                  • E. EBGP peers must be directly connected; otherwise, the EBGP-multihop option must be configured.
                                                  • F. BGP updates from an EBGP peer are propagated to other IBGP and EBGP peers.
                                                  Reveal Solution  Discussion  0

                                                  Correct Answer: D,E,F  🗳️

                                                  ISIS will elect DIS in the broadcast multi-access network. Which of the following statement about DIS is correct? (Multiple Choice)

                                                  • A. In a broadcast multi-access network, the DIS sends Hello PDUs three times as often.
                                                  • B. DIS supports the preemption function. After the new DIS preemption is successful, it does not need to flood any LSPs.
                                                  • C. DIS guarantees database synchronization by periodically sending CSNP messages
                                                  • D. ISIS elects the DIS by comparing the priorities, and compares the MAC addresses if the priorities are the same.
                                                  Reveal Solution  Discussion  0

                                                  Correct Answer: A,C,D  🗳️

                                                  There is an AS-path-filter, ip as-path-filter 1 permit ^100(_100)*(_400)*, which AS-PATH attribute cannot be matched by the As-path-filter?

                                                  • A. 100 400 400 400
                                                  • B. 100
                                                  • C. 100 400
                                                  • D. 100 200 900
                                                  Reveal Solution  Discussion  0

                                                  Correct Answer: D  🗳️

                                                  Which of the following statement about the LSA of OSPFv33 is correct?

                                                  • A. Router-LSA and Network-LSA do not contain routing information.
                                                  • B. The Link State id of the Inter-Area Prefix-LSA contains the prefix information.
                                                  • C. When the Intra-Area Prefix LSA is Referenced Link State Type-2, the Referenced Link State id contains the interface id of the DR.
                                                  • D. Inter-Area-Prefix LSA also contains Link-Local information.
                                                  Reveal Solution  Discussion  0

                                                  Correct Answer: A,C  🗳️

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