Try Huawei : H12-821_V1.0 valid & accurate questions and answers
Updated: Aug 22, 2026
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Huawei H12-821_V1.0 Exam Overview:
| Certification Vendor: | Huawei |
| Exam Name: | HCIP-Datacom-Core Technology V1.0 |
| Exam Number: | H12-821_V1.0 |
| Exam Price: | USD 300 |
| Available Languages: | English, Chinese, Japanese |
| Exam Format: | Single-choice questions, Multiple-choice questions, True/False, Drag and drop, Short answer |
| Exam Duration: | 90 minutes |
| Related Certifications: | HCIA-Datacom HCIP-Datacom-Advanced Routing & Switching HCIE-Datacom |
| Real Exam Qty: | 60-80 (varies) |
| Certificate Validity Period: | 3 years |
| Passing Score: | 600/1000 |
| Recommended Training: | Huawei HCIP-Datacom Training Resources Huawei Learning Portal - Datacom Track |
| Exam Registration: | Huawei Certification Official Portal Pearson VUE Huawei Exams |
| Sample Questions: | Huawei H12-821_V1.0 Sample Questions |
| Exam Way: | Computer-based exam (onsite test centers or online proctoring depending on region) |
| Pre Condition: | Recommended to hold HCIA-Datacom or equivalent networking knowledge |
| Official Syllabus URL: | https://certification.huawei.com/ |
Huawei H12-821_V1.0 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Network Security | 9% | - ACL and basic security mechanisms |
| Switching Technologies | 7% | - VLAN and STP fundamentals |
| Routing and Traffic Control | 10% | - Policy-based routing - Traffic engineering basics |
| Network Solution | 2% | - Integrated network design scenarios |
| IS-IS | 8% | - IS-IS protocol fundamentals |
| Routing Fundamentals | 3% | - Network basics and routing principles |
| BGP | 17% | - BGP path selection - BGP policy and attributes |
| IPv6 | 3% | - IPv6 addressing and routing |
| Large-scale WLAN Architecture | 6% | - Enterprise WLAN deployment basics |
| Multicast | 9% | - IGMP and PIM concepts |
| Network Reliability | 8% | - Redundancy and failover mechanisms |
| Network Service and Management | 2% | - Network management basics |
| OSPF | 16% | - OSPF areas and LSDB - OSPF core concepts |
Huawei HCIP-Datacom-Core Technology V1.0 Sample Questions:
1. In BGP, Keepalive messages are used to maintain BGP peer relationships. When a BGP router receives a Keepalive message from a peer, the BGP router sets the state of the peer to Established and periodically sends Keepalive messages to maintain the connection. By default, the device sends Keepalive messages every seconds.
2. Which of the following LSAs are advertised only within a single area?
A) AS External LSA
B) Summary LSA
C) Router LSA
D) Network LSA
3. On a network, some switches are enabled with RSTP and some switches are enabled with STP. What will happen?
A) A Huawei switch changes from RSTP to STP. After the STP-enabled switch is removed from the network, the RSTP-enabled switch can be moved back to the RSTP mode.
B) STP and RSTP are compatible with each other, but the rapid convergence of RSTP is unavailable.
C) A Huawei switch changes its mode from STP to RSTP. After the RSTP-enabled switch is removed from the network, the STP-enabled switch can be moved back to the RSTP mode.
D) STP and RSTP calculation are performed independently.
4. When receiving a packet that does not match any session table entry, the firewall discards the packet to prevent external attacks and ensure internal information security.
A) FALSE
B) TRUE
5. On a broadcast network, IS-IS elects a DIS, and OSPF elects a DR. Which of the following statements are true about the differences between a DIS and a DR?
A) DIS election and DR election take place at different times. The DIS is elected after an adjacency is established.
B) The DIS and DR provide different functions. The DIS is mainly used to create and update pseudonodes.
C) The DIS and DR are elected according to different rules. In DIS election, devices first compare priorities and then IP addresses. In DR election, devices first compare IP addresses and then priorities.
D) Adjacency establishment in a DIS scenario is different from that in a DR scenario. In IS-IS, adjacencies are also established between non-DIS routers.
Solutions:
| Question # 1 Answer: Only visible for members | Question # 2 Answer: C,D | Question # 3 Answer: A,B | Question # 4 Answer: B | Question # 5 Answer: A,B,D |
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