Huawei H12-261-ENU Exam : 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: Aug 25, 2026
  • Q & A: 525 Questions and Answers

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Huawei H12-261-ENU Exam Syllabus Topics:

SectionObjectives
Network Troubleshooting and Optimization- Performance optimization
  • 1. Latency and congestion analysis
    • 2. Routing optimization strategies
      - Fault diagnosis methodology
      • 1. Layered troubleshooting approach
        • 2. Protocol analysis techniques
          Network Security and QoS- Network security basics
          • 1. ACL design and filtering
            • 2. Basic security hardening
              - Quality of Service
              • 1. Traffic classification and marking
                • 2. Congestion management and scheduling
                  Routing Protocols and Optimization- EGP protocols
                  • 1. Route reflection and confederation
                    • 2. BGP policy control and attributes
                      - IGP protocols
                      • 1. IS-IS fundamentals and deployment
                        • 2. OSPF advanced design and optimization
                          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)
                                  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
                                          Advanced IP Network Fundamentals- Network convergence principles
                                          • 1. Scalability considerations
                                            • 2. Control plane vs data plane concepts
                                              - IPv4/IPv6 addressing and design
                                              • 1. Address planning and subnetting
                                                • 2. IPv6 deployment scenarios

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

                                                  1. Which SNMP message type report event sent to the NMS is reliable?

                                                  A) Trap
                                                  B) Get
                                                  C) Get Bulk
                                                  D) Response
                                                  E) Inform


                                                  2. In the intranet MPLS BGP VPNF network, when a packet enters the public network for forwarding, it will be encapsulated with two layers of MPLS labels. The following description of the two-layer label, which is wrong?

                                                  A) MPLS BGP VPN uses two layers of labels: public network labels (also known as outer labels) and private network labels (also known as inner labels).
                                                  B) By default, the router assigns the same label value to all VPNv4 routes destined for the peer PE.
                                                  C) The egress PE uses the inner label when determining which egress CE the message should be sent to.
                                                  D) The private network label is carried and distributed when the route is delivered by MP-BGP. The public network label is distributed by the LDP protocol.


                                                  3. MPLS BGP VPN is a Layer 3 VPN technology used to provide VPN solutions (PPVPN).
                                                  What are the basic components of MPLS BGP VPN?

                                                  A) CE and P
                                                  B) PE, P and CE
                                                  C) P and PE
                                                  D) SP


                                                  4. Regarding the BGP alliance, which is wrong description?

                                                  A) The sub-autonomous system within the federation can use a private AS number. A Huawei NE/AR router can be configured with up to 32 sub-AS in a single alliance.
                                                  B) The federation can easily detect the routing loop within the AS because EBGP is running between the sub-AS.
                                                  C) The Alliance divides an AS into several sub-AS alliances. External As still considers the Alliance to be an AS.
                                                  D) The sub-AS number of the confederation is advertised to BGP peers outside the confederation by default.


                                                  5. There is an existing router HW1 running OSPF. The interface Sera0 of HW1 is released in area 0, and the interface Sera1 is released in area 1. Run the "nssa default-route-advertise" command in the OSPF process.
                                                  Based on the previous description, which of the following options are inferred to be correct? (Multiple choice)

                                                  A) HW1 will inject zone 7 default route into zone 1.
                                                  B) HW1 will inject zone 3 default routes into zone 1.
                                                  C) HW1 will inject zone 7 default route into zone 0
                                                  D) When HW1 injects the default route into Area 1, the local routing table of HW1 needs to have a default route.
                                                  E) When HW1 injects the default route into Area 1, the local routing table of HW1 may not contain a default route.


                                                  Solutions:

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

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