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

  • Exam Code: H12-261-ENU
  • Exam Name: HCIE-Routing&Switching (Written)(Huawei Certified ICT Expert-Routing & Switching)
  • Updated: Jul 31, 2026
  • Q & A: 525 Questions and Answers

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Huawei H12-261-ENU Exam Syllabus Topics:

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

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

                                                  1. Which is wrong about the EVPN Type 5 class routing?

                                                  A) Type 5 is an IP prefix route.
                                                  B) The IP Prefix field can carry either the host IP address or the network segment address.
                                                  C) Type 5 routing carries both Layer 2 VNI and Layer 3 VNI
                                                  D) Type 5 routing carries Layer 3 VNI.


                                                  2. What do we usually call the devices in the MPLS BGP VPN domain? (Multiple choice)

                                                  A) User router
                                                  B) P
                                                  C) PE
                                                  D) CP


                                                  3. The following statement about cross-domain MPLS VPN, which is wrong? (Multiple Choice)

                                                  A) For the cross-domain vPN-Option B mode, an MP-eBGP neighbor relationship needs to be established between the two ASBR.
                                                  B) When the public network label only use LDP, for the cross-domain vp-Option-c scheme 2, three-layer labels are required for packet forwarding.
                                                  C) For the cross-domain vPn-OptionA mode, the route between the two ASBR is a common IPv4 route.
                                                  D) For the cross-domain vPN-OptionB mode, two ASBR are interconnected by multiple interfaces (including sub-interfaces). Each interface is associated with one VPN. Each ASBR-PE uses the peer as the CE.


                                                  4. As shown in the following figure, the corresponding peer relationship is established. The AS400 receives the 1.1.1.1/32 network route from the AS100. What is the AS-Path attribute?

                                                  A) 100 200 300
                                                  B) 100 200 300 400
                                                  C) 400 300 200 100
                                                  D) 300 200 100


                                                  5. Which of the following attacks are DoS (Denial of Service) attacks? (Multiple Choice)

                                                  A) Single packet attack
                                                  B) Flood attack
                                                  C) Man-in-the-middle attack
                                                  D) Source IP address spoofing attack


                                                  Solutions:

                                                  Question # 1
                                                  Answer: C
                                                  Question # 2
                                                  Answer: B,C
                                                  Question # 3
                                                  Answer: B,D
                                                  Question # 4
                                                  Answer: D
                                                  Question # 5
                                                  Answer: B,D

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