Huawei HCIP-Datacom-Core Technology V1.0 : H12-821_V1.0 Exam Questions

Exam Code: H12-821_V1.0
Exam Name: HCIP-Datacom-Core Technology V1.0
Updated: Oct 05, 2026
Q&As: 378 Questions and Answers

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Huawei H12-821_V1.0 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Routing Basics	3%	- Routing concepts and classification - Routing table composition and selection rules
Topic 2: IS-IS Fundamentals	8%	- IS-IS protocol principles - IS-IS configuration and deployment
Topic 3: Ethernet Switching Technologies	7%	- Link aggregation and stack technology - VLAN principles and configuration - Spanning Tree Protocol
Topic 4: WLAN Basics	2%	- WLAN technology principles - WLAN deployment and optimization
Topic 5: Routing and Traffic Control	10%	- Route import and redistribution - Policy-based routing - Routing policy and filtering
Topic 6: Multicast Technologies	9%	- Multicast basic concepts - IGMP protocol - PIM protocol
Topic 7: OSPF Fundamentals	16%	- OSPF configuration and optimization - OSPF special applications and troubleshooting - OSPF principles and operation mechanisms
Topic 8: IPv6 Technologies	3%	- IPv6 routing protocols - IPv6 address structure and configuration
Topic 9: BGP Fundamentals	17%	- BGP characteristics and working principles - BGP configuration and policy application - BGP route attributes and selection
Topic 10: Network Service and Management	5%	- DHCP and DNS services - Network management and monitoring
Topic 11: Network Solutions and Design	5%	- Typical network architecture and solution - Enterprise network design principles
Topic 12: Network Security	8%	- Attack defense and security policy - AAA authentication - ACL and packet filtering
Topic 13: Network Reliability	7%	- Device redundancy and link backup - VRRP protocol - BFD technology

Huawei HCIP-Datacom-Core Technology V1.0 Sample Questions:

Question #1

Compared with STP, RSTP defines the different port states. Which of the following statements regarding discarding and learning states are true?

A. The port in discarding state does not learn MAC addresses table.
B. The port in discarding or learning state does not learn MAC addresses
C. The port In discarding or learning state does not forward data frames.
D. The port In learning stole docs not learn MAC addresses table.

Reveal Solution Discussion 0

Correct Answer: A,C 🗳️

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Question #2

STAs stay on different subnets before and after Layer 3 roaming. To enable the STAs to access the original network after roaming, network engineers need to configure user traffic to be forwarded to the original subnet over a CAPWAP tunnel.

A. TRUE
B. FALSE

Reveal Solution Discussion 0

Correct Answer: A 🗳️

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Question #3

An IP prefix list is configured on a router using the following command:
ip ip-prefix huawei index 10 permit 10.1.1.0 24 greater-equal 26
In this case, the value of greater-equal-value is ____, and the value of less-equal-value is ____.

Reveal Solution Discussion 0

Correct Answer:

greater-equal-value: 26 , less-equal-value: 32
Explanation:
1. Understanding Prefix List Configuration:
The command ip ip-prefix huawei index 10 permit 10.1.1.0 24 greater-equal 26 defines a prefix filter:
* The base prefix is 10.1.1.0/24.
* The greater-equal 26 condition specifies that the mask length of matching prefixes must be at least 26 bits .
* If the less-equal parameter is not explicitly defined, the default value is 32 , meaning the longest possible mask length for IPv4.
2. Explanation of Values:
* greater-equal-value : Specifies the minimum mask length. In this case, the value is 26 .
* less-equal-value : Specifies the maximum mask length. Since it is not explicitly configured, the default value is 32 .
3. Summary:
* greater-equal-value = 26
* less-equal-value = 32
:
Huawei HCIA-Datacom Study Guide, Chapter " IP Prefix List Configuration. "

Question #4

The AS_Path attribute records the numbers of all ASs that a route passes through from the local end to the destination in the vector order. If a BGP speaker advertises a route to an IBGP peer, it creates an empty AS_Path in an Open message. This prevents routing loops between ASs.