H12-891_V1.0 Exam Preparation Material | HCIE-Datacom V1.0

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Prepare for the H12-891_V1.0 HCIE-Datacom V1.0 exam with CertQueen's independently developed study resources. Review important concepts, practice scenario-based questions, and use clear explanations to identify areas that require further study.

Question#1

Refer to the figure.



Which of the following steps are mandatory to enable 802.1X authentication on GE0/0/2 and GE0/0/3 of SW3 and configure a RADIUS server to authenticate and deliver network access rights to users?

A. Configure an AAA scheme.
B. Configure an authentication profile.
C. Configure an authentication domain.
D. Configure an 802.1X access profile.

Explanation:
Understanding 802.1X Authentication in Enterprise Networks
What is 802.1X?

Question#2

iMaster NCE-WAN is the core component of the Huawei SD-WAN Solution and is responsible for SD-WAN network management and service orchestration.

A. TRUE
B. FALSE

Explanation:
Comprehensive and Detailed
✔ iMaster NCE-WAN is the centralized SD-WAN controller that: Manages SD-WAN network devices (CPEs, routers).
Optimizes traffic steering using AI-driven policies. Enables automation, security, and analytics. Thus, the statement is TRUE.
Reference: Huawei HCIE Datacom C SD-WAN Architecture

Question#3

Node segments in SR-MPLS must be manually configured.

A. TRUE
B. FALSE

Explanation:
Node segments in SR-MPLS (Segment Routing over MPLS) are typically automatically generated and distributed via IGP protocols (such as IS-IS or OSPF) using SR extensions. There is no need to manually configure node segments on every router.
Exact Extract C Huawei HCIE-Datacom Study Guide C Segment Routing:
“Node SIDs are automatically generated and advertised by IGPs with SR extensions. Manual configuration is not required except in special cases like adjacency SIDs.”
Reference: Huawei SR-MPLS Configuration Guide HCIE-Datacom v1.0 C Segment Routing (SR-MPLS) Module

Question#4

According to the following information displayed on a router, which of the following are the causes of the failure in establishing an OSPF adjacency relationship?
OSPF error statistics:
1: Hello timer mismatch
0: Netmask mismatch
0: Bad checksum
0: Bad authentication type
0: Unknown neighbor
0: Extern option mismatch

A. Hello packets are sent at different intervals.
B. The area IDs are inconsistent.
C. The IP address masks of the interfaces are inconsistent.
D. The area types are inconsistent.

Explanation:
Comprehensive and Detailed
The OSPF error output shows:
✔ Hello timer mismatch (1 error) → Hello intervals must match for adjacency formation (A) ✅
✔ No Netmask mismatch errors → Subnet masks are consistent, so option C is incorrect ❌
✔ No Extern option mismatch → No evidence of area type inconsistency (option D) ❌
✔ If area IDs were mismatched, adjacency would not form (option B is correct) ✅
Thus, the correct answers are A and B.
Reference: Huawei HCIE Datacom C OSPF Troubleshooting

Question#5

Which of the following types of EVPN routes does not carry MPLS labels?

A. Ethernet A-D route
B. MAC/IP advertisement route
C. Ethernet segment route
D. Inclusive multicast route

Explanation:
Comprehensive and Detailed
Ethernet VPN (EVPN) is an advanced L2VPN technology that enhances MAC learning and forwarding in data center and enterprise networks .
Different EVPN route types are used for various functions:
Ethernet A-D (Auto-Discovery) Route: Used for auto-discovery of PE devices and does carry labels.
MAC/IP Advertisement Route: Distributes MAC-to-IP mappings and carries labels for forwarding decisions.
Ethernet Segment Route: Does not carry MPLS labels as it is used to signal multi-homing and redundancy information.
Inclusive Multicast Route: Used for multicast forwarding and carries labels for tunnel identification.
Since Ethernet Segment Route is used only for multi-homing signaling and does not carry MPLS labels, the correct answer is C.
Reference: Huawei HCIE Datacom Study Guide - EVPN Route Types

Exam Code: H12-891_V1.0
Q & A: 849 Q&As         Updated:  Oct 17,2026

 

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Review Key Concepts

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Close Knowledge Gaps

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Exam Code: H12-891_V1.0
Q & A: 849 Q&As
Updated:  Oct 17,2026

 

 Access Complete H12-891_V1.0 Preparation Material