Purchase Huawei : H12-221-ENU Exam Materials and then pass exam easily
Updated: Nov 04, 2026
No. of Questions: 597 Questions & Answers with Testing Engine
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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 |
| Related Certifications: | HCIP-Routing & Switching-IEEP HCIP-Routing & Switching-IENP |
| Available Languages: | French, Chinese, English, Spanish |
| Passing Score: | 600/1000 |
| Exam Price: | 160–200 USD |
| Certificate Validity Period: | 3 years |
| Exam Format: | Single-choice, Multiple-choice, Fill-in-the-blank, Drag-and-drop, True/False |
| Real Exam Qty: | 60 |
| Exam Duration: | 90 minutes |
| Recommended Training: | HCIP-Routing & Switching-IERS Official Training |
| Exam Registration: | Pearson VUE Registration Huawei Talent Official |
| 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: IS-IS Routing Protocol | 18% | - IS-IS route control and optimization - IS-IS level-1 and level-2 routing - IS-IS link state database and route calculation - IS-IS basic concepts and network structure |
| Topic 2: IP Multicast | 10% | - Multicast principles and addresses - PIM-DM and PIM-SM mechanisms - IGMP protocol and operations |
| Topic 3: Routing Control | 13% | - IP prefix list and access control list - Routing policy and filter policy - Route redistribution between protocols |
| Topic 4: OSPF Routing Protocol | 22% | - OSPF basic principles and characteristics - OSPF neighbor and adjacency establishment - OSPF route summarization and filtering - OSPF special configurations and troubleshooting - OSPF area types and LSA types |
| Topic 5: BGP Routing Protocol | 22% | - BGP basic principles and session establishment - BGP path attributes and route selection rules - BGP route policy and filtering - BGP confederation and route reflector |
| Topic 6: Switching Technologies | 15% | - Eth-Trunk technology and configuration - Advanced switch features and security - RSTP and MSTP protocols |
Huawei HCIP-Routing&Switching-IERS(Huawei Certified ICT Professional-Implementing Enterprise Routing and Switching Network) Sample Questions:
Which of the following is the default route that OSPF supports? (Multiple choice)
- A. can be issued on the ASBR
- B. can be issued on the ABR
- C. Can only be forced to issue
- D. Can be issued without force
Correct Answer: A,B,D 🗳️
Which description of OSPF route aggregation commands is correct?(Multiple choices)
- A. The abr-summary command is a command in the OSPF area view.
- B. not-advertise is the default parameter of the abr-summary command. That is, if the abr-summary command is not specified for advertise or not-advertise, the default is not-advertise.
- C. advertise is the default parameter of the abr-summary command. That is, if you configure the abr-summary command without specifying not-advertise, it defaults to advertise.
- D. asbr-summary command is a command in the OSPF view.
Correct Answer: A,C,D 🗳️
Which of the following description about the classification of link aggregation are wrong? (Multiple Choice)
- A. In active LACP mode, all active interfaces participate in data forwarding and share load traffic. Therefore, they are called load balancing mode.
- B. In dynamic LACP mode, the establishment of an Eth-Trunk, the joining of member interfaces, and the selection of active interfaces require manual configuration.
- C. According to whether the link aggregation control protocol is enabled, it is divided into manual load sharing mode link aggregation and LACP protocol link aggregation.
- D. In static LACP mode, the establishment of an Eth-Trunk and the joining of member interfaces are all manually configured. But with manual load sharing The difference in mode link aggregation is that LACP packets in this mode participate in the selection of active interfaces.
Correct Answer: A,B 🗳️
Which description of this configuration is wrong?
- A. Enable the TC protection function, can avoid attackers forge topology changes BPDU packets to malicious attacks switching equipment, and caused the frequent relating to delete MAC address table and the ARP table, so as to achieve the purpose of the protection switching equipment.
- B. When the TC protection function is enabled, the frequency of MSTP process processing type BPDU message can be configured in the unit time.
- C. Execute the command STP tc-protection enable, enabling the protection function of the MSTP process tc type BPDU message.
- D. By default, the TC protection function of the switching equipment is in the state of failure.
Correct Answer: D 🗳️
Which of the following descriptions is correct about BGP MED? (Multiple choice)
- A. By default, BGP routing rules can perform MED comparisons on routers from different autonomous systems.
- B. In the BGP routing rules, the priority of the MED is lower than AS-Path, Preferred-Value, Local-Preference and Origin.
- C. By default, if there is no MED value in the route attribute, press 0 to process. If the bestroute med-none-as-maximux command is configured, the MED is processed as the maximum value of 4294967295.
- D. The default value of BGP route MED is 0.
Correct Answer: B,C,D 🗳️
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