Exam Name: HCIP-Datacom-Core Technology V1.0
Certification Provider: Huawei
Corresponding Certification: HCIP-Datacom
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HCIP-Datacom-Core Technology V1.0: H12-821_V1.0 Exam Premium File as PDF & Test Engine
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Last Updated: Oct 12, 2026
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Huawei H12-821_V1.0 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Network Service and Management | 5% | - Network management and monitoring - DHCP and DNS services |
| Topic 2: Network Security | 8% | - Attack defense and security policy - ACL and packet filtering - AAA authentication |
| Topic 3: IS-IS Fundamentals | 8% | - IS-IS protocol principles - IS-IS configuration and deployment |
| Topic 4: Multicast Technologies | 9% | - PIM protocol - Multicast basic concepts - IGMP protocol |
| Topic 5: Routing and Traffic Control | 10% | - Route import and redistribution - Policy-based routing - Routing policy and filtering |
| Topic 6: OSPF Fundamentals | 16% | - OSPF special applications and troubleshooting - OSPF configuration and optimization - OSPF principles and operation mechanisms |
| Topic 7: Routing Basics | 3% | - Routing table composition and selection rules - Routing concepts and classification |
| Topic 8: IPv6 Technologies | 3% | - IPv6 address structure and configuration - IPv6 routing protocols |
| Topic 9: WLAN Basics | 2% | - WLAN technology principles - WLAN deployment and optimization |
| Topic 10: Network Reliability | 7% | - VRRP protocol - Device redundancy and link backup - BFD technology |
| Topic 11: Ethernet Switching Technologies | 7% | - Link aggregation and stack technology - Spanning Tree Protocol - VLAN principles and configuration |
| Topic 12: Network Solutions and Design | 5% | - Enterprise network design principles - Typical network architecture and solution |
| Topic 13: BGP Fundamentals | 17% | - BGP configuration and policy application - BGP characteristics and working principles - BGP route attributes and selection |
Huawei HCIP-Datacom-Core Technology V1.0 Sample Questions:
Which of the following attacks is not the network layer attack?
- A. Smurf attack
- B. IP spoofing attack
- C. ICMP attack
- D. ARP spoofing attack
Correct Answer: D 🗳️
Explanation: Only visible for Fast2test members. You can sign-up / login (it's free).
After the administrator of an enterprise deploys a DHCP server, employees complain that their clients cannot obtain IP addresses from the DHCP server. Which of the following may cause this problem?
- A. The DHCP function is disabled by default, and the administrator forgets to enable the DHCP function.
- B. STP is enabled on the DHCP server.
- C. DHCP clients and the DHCP server are on different network segments, and no DHCP relay agent is configured on the network.
- D. Multiple DHCP servers are configured.
Correct Answer: A,C 🗳️
Explanation: Only visible for Fast2test members. You can sign-up / login (it's free).
On an OSPF network, the default interface cost is calculated by dividing the default reference value by the actual interface bandwidth. By default, the reference value is______Mbit/s.
(Enter only digits.)
Correct Answer:
100
Huawei modular devices have multiple hardware modules that provide different functions. Match the following hardware modules with their functions.
Correct Answer:
Explanation:
The hardware modules of Huawei modular devices and their functions are:
Main Processing Unit (MPU): Provides control and management planes for the entire system, responsible for protocol processing, system security, and software upgrades.
Switch Fabric Unit (SFU): Provides the data plane, enabling high-speed data switching between service modules.
Line Processing Unit (LPU): Manages data forwarding, offering various interfaces (optical and electrical) for data access.
When receiving a packet, a Huawei router matches the packet against ACL rules. The default ACL matching order used by the Huawei router is.
Reveal Solution Discussion 0Correct Answer:
Sequential
Explanation:
ACL Matching in Huawei Routers:
Access Control Lists (ACLs) are used to filter packets based on specific criteria, such as source/destination IP, ports, or protocols.
When a packet arrives, the Huawei router processes it against the configured ACL rules to decide whether to permit or deny the packet.
Reference: HCIP-Datacom-Core Technology Training Material (ACL Principles and Configuration).
Sequential Matching Order:
By default, Huawei routers match packets against ACL rules sequentially. This means:
The router checks the packet against rules in the order they are listed, starting from the top of the ACL.
The first rule that matches the packet ' s attributes is applied, and no further rules are checked. This is known as the first-match principle.
If no rules match, the packet is denied by default (implicit deny).
Reference: HCIP-Datacom Advanced Routing & Switching Technology (ACL Matching Mechanism).
Example of Sequential Matching:
Consider the following ACL rules:
Rule 10: Permit IP 192.168.1.0/24
Rule 20: Deny IP 192.168.1.1
If a packet with source IP 192.168.1.1 arrives:
The router matches it against Rule 10 (Permit 192.168.1.0/24) and allows the packet.
Rule 20 is not evaluated because the first match (Rule 10) already applies.
Alternative Matching Orders:
Some routers or configurations allow batch matching (evaluating all rules) for specific scenarios, but this is not the default behavior in Huawei routers.
Conclusion:
The default ACL matching order on Huawei routers is sequential, and the first matching rule determines the action applied to the packet.
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