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

H12-261-ENU real exams

Exam Code: H12-261-ENU

Exam Name: HCIE-Routing&Switching (Written)(Huawei Certified ICT Expert-Routing & Switching)

Updated: Aug 13, 2026

Q & A: 525 Questions and Answers

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Huawei H12-261-ENU Exam Syllabus Topics:

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

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

                                                  1. The network administrator defines a traffic policing strategy such as
                                                  [Huawei] display traffic policy user-defined
                                                  User Defined Traffic Policy Information:
                                                  Policy: p1
                                                  Classifier c1
                                                  Operator: OR
                                                  Behavior: b1
                                                  Committed Access Rate:
                                                  CIR 256(Kbps), PIR 0 (Kbps) CBS 48128 (byte), PBS 80128 (byte)
                                                  Color Mode: color blind
                                                  Conform Action: pass
                                                  Yellow Action: pass
                                                  Exceed Action: discard
                                                  statistic: enable
                                                  The router port that uses this policy has been idle for about 10 seconds. At this time, there are huge bursts of c1 type traffic coming in an instant, so how many bytes will be colored in the green packet?

                                                  A) 48128 bytes
                                                  B) 32K bytes
                                                  C) 2K bytes
                                                  D) 80128 bytes


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

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


                                                  3. The following description of the BSR mechanism, which is correct? (Multiple Choice)

                                                  A) There can be multiple C-BSR in a PIM-SM domain, but only one BSR can be elected.
                                                  B) One C-BSR can also collect C-RP information through received C-RP packets.
                                                  C) The BSR advertises BSR information and C-RP information to all routers in the PIM-SM domain by flooding Bootstrap packets.
                                                  D) The BSR collects C-RP information through the received C-RP data packets.


                                                  4. Which of the following description about the information of BGP4+ is correct?

                                                  A) Modifying the BCP's router ID will cause the BGP connection between the routers to be re-established.
                                                  B) Bgp4+ can use dampening command to suppress IBGP routes.
                                                  C) bGP4+ does not support automatic route aggregation.
                                                  D) The Next Hop attribute in BCP4+ is represented by the Pv6 address, which can be the link-local address of the next hop.


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

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


                                                  Solutions:

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

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