Huawei HCIP-Datacom-Advanced Routing & Switching Technology V1.0 : H12-831_V1.0-ENU Exam Questions

Exam Code: H12-831_V1.0-ENU
Exam Name: HCIP-Datacom-Advanced Routing & Switching Technology V1.0
Updated: Oct 04, 2026
Q&As: 211 Questions and Answers

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Huawei H12-831_V1.0-ENU Exam Syllabus Topics:

Section	Weight	Objectives
IPv6 Routing	20%	- IPv6 address planning and configuration - Transition mechanisms (dual-stack, tunnel, translation) - BGP4+ for IPv6 - OSPFv3 and IS-IS for IPv6
Network Troubleshooting	10%	- Performance and service fault resolution - Structured troubleshooting methodology - Routing protocol fault diagnosis - Switching and link fault handling
MPLS Technologies	19%	- MPLS OAM and protection - LDP and RSVP-TE protocols - MPLS fundamentals and label distribution - MPLS VPN (L3VPN, L2VPN)
Advanced BGP Features	10%	- Routing policies and filtering - BGP multi-homing and load balancing - BGP route selection and attributes - Route reflectors and confederations
Advanced IGP Features	17%	- IS-IS advanced features 1. Route aggregation 2. Convergence optimization 3. Level-1/Level-2 routing control - OSPF advanced features 1. Special area types and applications 2. Fast convergence technologies 3. Route summarization and filtering
Network Cutover	7%	- Cutover planning and risk assessment - Pre-cutover verification - Post-cutover validation - Implementation and rollback strategy
Advanced Ethernet Technologies	10%	- QinQ and VLAN mapping - Ethernet link aggregation and reliability - Port isolation and security features - VLAN aggregation and MUX VLAN
Network O&M	7%	- Network monitoring and performance analysis - Log and alarm management - Routine maintenance procedures - Configuration management and backup

Huawei HCIP-Datacom-Advanced Routing & Switching Technology V1.0 Sample Questions:

Question #1

VLAN aggregation is configured on a switched network. Sub-VLAN 2 and Sub-VLAN 3 are added to Super-VLAN 10 . To enable hosts in different sub-VLANs to communicate with each other , run the following command in the VLANIF 10 view corresponding to the Super-VLAN .
(Enter lowercase letters.)

Reveal Solution Discussion 0

Correct Answer:

inter-sub-vlan-proxy enable
Explanation:
Understanding VLAN Aggregation (Super-VLAN and Sub-VLANs)
* VLAN aggregation allows multiple sub-VLANs to be grouped under a super-VLAN , reducing the number of VLANIF interfaces required for IP address configuration.
* Super-VLAN : A logical VLAN that does not forward Layer 2 traffic directly but is used for Layer 3 communication .
* Sub-VLANs : VLANs that exist within the Super-VLAN but cannot communicate with each other by default.
2# # Why is the " inter-sub-vlan-proxy enable " Command Needed?
* By default, hosts in different sub-VLANs under the same super-VLAN cannot communicate with each other because sub-VLANs do not exchange MAC address information.
* The inter-sub-vlan-proxy enable command allows Layer 3 communication between sub-VLANs under the same super-VLAN by acting as a proxy for ARP requests and replies .
* This enables inter-sub-VLAN communication while still reducing the number of VLANIF interfaces required.
3# # Command Syntax and Execution
* The correct command should be run under the VLANIF interface of the super-VLAN :
[Switch] interface vlanif 10
[Switch-Vlanif10] inter-sub-vlan-proxy enable
Reference: HCIP-Datacom Advanced Routing & Switching Technology - VLAN Aggregation and Inter- Sub-VLAN Communication

Question #2

On the OSPFv3 network shown in the figure, area 1 is a common area. R2 generates an Inter-Area-Prefix- LSA to describe the routes of a network segment in the area. Such an LSA exists in both area 0 and area 1.

A. TRUE
B. FALSE

Reveal Solution Discussion 0

Correct Answer: A 🗳️

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Question #3

R1 forwards a packet with the destination IP address of 4.4.4.4 on an MPLS network .
* Some LSP (Label Switched Path) information of R3 is shown in the figure.
* During packet transmission, which of the following devices perform MPLS label operations ?

A. R1
B. R3
C. R2
D. R4

Reveal Solution Discussion 0

Correct Answer: A,B,C 🗳️

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Question #4

If the display ospfv3 peer verbose command is run to check OSPFv3 neighbor information, the command output contains information such as the peer router ID, global unicast address of the peer interface, and neighbor status.

A. TRUE
B. FALSE

Reveal Solution Discussion 0

Correct Answer: A 🗳️

Question #5

A network engineer provides a troubleshooting report after rectifying a fault . The actual network is simplified into the one shown in the figure, where:
* R1 and R2 both have OSPF enabled .
* R1 and R2 function as the gateways for PC1 and PC2, respectively .
Given this, which of the following statements are true?

Options: