Huawei H12-221-ENU Questions & Answers - in .pdf
- Total Q&A: 597
- Update: Aug 20, 2026
- Price: $59.99
- Vendor: Huawei
- Exam Code: H12-221-ENU
- Exam Name: HCIP-Routing&Switching-IERS(Huawei Certified ICT Professional-Implementing Enterprise Routing and Switching Network)
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- Update: Aug 20, 2026
- Price: $59.99
- Vendor: Huawei
- Exam Code: H12-221-ENU
- Exam Name: HCIP-Routing&Switching-IERS(Huawei Certified ICT Professional-Implementing Enterprise Routing and Switching Network)
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Huawei H12-221-ENU Exam Overview:
| Certification Vendor: | Huawei |
| Exam Name: | Huawei Certified ICT Professional-Implementing Enterprise Routing and Switching Network (HCIP-Routing&Switching-IERS) |
| Exam Number: | H12-221-ENU |
| Real Exam Qty: | 60 |
| Available Languages: | English, Chinese, Spanish, French |
| Exam Duration: | 90 minutes |
| Exam Format: | Single-choice, Multiple-choice, True/False, Fill-in-the-blank, Drag-and-drop |
| Certificate Validity Period: | 3 years |
| Exam Price: | 160–200 USD |
| Related Certifications: | HCIP-Routing & Switching-IENP HCIP-Routing & Switching-IEEP |
| Passing Score: | 600/1000 |
| Recommended Training: | HCIP-Routing & Switching-IERS Official Training |
| Exam Registration: | Huawei Talent Official Pearson VUE Registration |
| Sample Questions: | Huawei H12-221-ENU Sample Questions |
| Exam Way: | Online proctored or onsite at authorized test centers |
| Pre Condition: | No mandatory prerequisites; HCIA-Routing & Switching knowledge is strongly recommended |
| Official Syllabus URL: | https://e.huawei.com/en/talent/certification/exam/H12-221 |
Huawei H12-221-ENU Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Switching Technologies | 15% | - Eth-Trunk technology and configuration - Advanced switch features and security - RSTP and MSTP protocols |
| Topic 2: OSPF Routing Protocol | 22% | - OSPF area types and LSA types - OSPF route summarization and filtering - OSPF special configurations and troubleshooting - OSPF basic principles and characteristics - OSPF neighbor and adjacency establishment |
| Topic 3: Routing Control | 13% | - Route redistribution between protocols - IP prefix list and access control list - Routing policy and filter policy |
| Topic 4: BGP Routing Protocol | 22% | - BGP route policy and filtering - BGP confederation and route reflector - BGP path attributes and route selection rules - BGP basic principles and session establishment |
| Topic 5: IS-IS Routing Protocol | 18% | - IS-IS level-1 and level-2 routing - IS-IS basic concepts and network structure - IS-IS link state database and route calculation - IS-IS route control and optimization |
| Topic 6: IP Multicast | 10% | - PIM-DM and PIM-SM mechanisms - IGMP protocol and operations - Multicast principles and addresses |
Huawei HCIP-Routing&Switching-IERS(Huawei Certified ICT Professional-Implementing Enterprise Routing and Switching Network) Sample Questions:
1. According to the degree of control over multicast sources, IP multicast is divided into three models, namely?
A) ASM
B) ATM
C) SSM
D) SFM
2. The ACL command acl[ number ] acl-unmber [ match-order { auto | config } ], where acl-number is used to specify the number of the access control list. The value of the acl-number based on the ACL is ().
A) 3000~3999
B) 1000~3999
C) 0~1000
D) 2000~3999
3. About the description of MUX VLAN, which is wrong?
A) After MUX VLAN is enabled on a port, you can use it again for VLAN mapping and VLAN stacking configuration.
B) Enterprises can use the Principal PORT to connect to enterprise servers, separate PORT to connect enterprise customers and Group PORT to connect enterprise employees. In this way, enterprise customers and enterprise employees can access enterprise servers, and internal employees can communicate, enterprise customers cannot communicate, and enterprise customers and enterprise employees cannot communicate with each other.
C) If the VLAN ID is already used for the principal VLAN, the VLAN can no longer be used for VLANIF interfaces, super VLANs and sub VLANs.
D) Each Group VLAN must have a Principal VLAN bound to it.
4. About the description of IGMP Snooping, which of the following is correct? (Multiple choice)
A) IGMP Snooping establishes a MAC multicast address table by listening to the IGMP messages sent by hosts.
B) IGMP Snooping does not consume the CPU of the switch.
C) IGMP Snooping solves the problem of multicast broadcast at Layer 3.
D) IGMP Snooping operates at the link layer and is a multicast constraint mechanism on Layer 2 Ethernet switches for managing and controlling multicast groups.
5. Which of the following OSPF state transitions are correct? (Multiple choices)
A) The result of the ExchangeDone event in the Exchange state is the state transition to Loading.
B) The result of the NegotiationDone event in the Exstart state is the state transition to Full.
C) The result of the Loading Done event in the Loading state is the state transition to Full.
D) The result of the ExchangeDone event in the Exchange state is the state transition to Exstart.
Solutions:
| Question # 1 Answer: A,C,D | Question # 2 Answer: D | Question # 3 Answer: A | Question # 4 Answer: A,D | Question # 5 Answer: A,C |
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