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Last Updated: Nov 04, 2026
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Huawei H12-221-ENU Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Network Management and Troubleshooting | - Network monitoring and diagnostics tools - Basic troubleshooting methodologies |
| Topic 2: Routing Technologies | - Static routing and policy-based routing - OSPF (single-area and multi-area) - BGP basics and route selection - IS-IS fundamentals |
| Topic 3: Network Security Fundamentals | - Basic device security hardening - ACL configuration and traffic filtering |
| Topic 4: WAN and MPLS Basics | - MPLS architecture overview - VPN fundamentals (L2VPN/L3VPN concepts) |
| Topic 5: LAN Switching Technologies | - VLANs and VLAN implementation - EtherChannel / link aggregation - STP/RSTP/MSTP concepts and configuration |
| Topic 6: Enterprise Network Fundamentals | - IPv4/IPv6 fundamentals - TCP/IP model and IP addressing - Network device roles and architecture |
| Topic 7: IP Services | - NTP and basic network services - NAT/PAT implementation - DHCP configuration and relay |
Huawei HCIP-Routing&Switching-IERS(Huawei Certified ICT Professional-Implementing Enterprise Routing and Switching Network) Sample Questions:
Which description about the permanent multicast address is wrong?
- A. All routers listen 224.0.0.2.
- B. All routers running OSPF protocol listen 224.0.0.5.
- C. All routers running the RIPv2 protocol listen 224.0.0.100.
- D. All hosts and routers in the network segment listen 224.0.0.1.
Correct Answer: C 🗳️
When applying policy routing, which of the following descriptions are wrong? (Multiple Choice)
- A. Apply strategy routing in the system view, in this case, strategy routing works on all packets received through this router.
- B. Apply strategy routing in the system view, in this case, strategy routing takes effect only on packets generated locally.
- C. Apply strategy routing in the interface view, in this case, strategy routing only affects the packets received on the interface.
- D. Apply strategy routing in the interface view, in this case, strategy routing only affects the packets received and sent by the interface.
Correct Answer: A,D 🗳️
BGP connection-establishment. When no load balancing is configured, the BGP speaker advertises only one best route in the BCP routing table to the neighbor.
- A. FALSE
- B. TRUE
Correct Answer: B 🗳️
How to maintain a network segment group membership of IGMPv2 router? (Multiple Choice)
- A. The router periodically sends a Query message. After receiving the Query message, the receiver host reports the Report message.
- B. The router does not delete a group membership unless a corresponding leave message is received.
- C. The router will query specific groups.
- D. The router maintains a timeout timer for each group membership. If the receiver receives a host, it refreshes the timer. If the timer times out, the router deletes the membership of the group.
Correct Answer: A,C,D 🗳️
Multicast related protocols which do not include? (Multiple choice)
- A. MBGP
- B. DVMRP
- C. PIM
- D. OSP
- E. MSDP
Correct Answer: A,D 🗳️
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