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  1. Home
  2. Huawei Certification
  3. H12-891_V1.0 Exam
  4. Huawei.H12-891_V1.0.v2026-06-05.q295 Dumps
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Question 26

Which of the following community attributes ensure that BGP routes are transmitted only within an AS?

Correct Answer: B
In BGP, community attributes help control the advertisement scope of BGP routes. Here's what each option means:
No_Export: This well-known community attribute prevents BGP routes from being advertised to external BGP (EBGP) peers. Routes with this attribute can still be advertised to internal BGP (IBGP) peers within the same AS. This ensures that the route remains within the originating AS.
No_Advertise: This attribute means that the route should not be advertised toanyBGP peer, whether internal or external.
Internet: Indicates that the route can be advertised to all BGP peers, both internal and external, with no restrictions.
No_Export_Subconfed: Similar to No_Export, but it also restricts advertisement to peers within a BGP confederation. It ' s more specific and not generally used just to keep routes inside one AS.
Therefore, the correct answer isB. No_Export, as it is the attribute that ensures BGP routes remain within the AS by not being sent to EBGP peers.
Reference:Huawei HCIE-Datacom V1.0 Study Guide - Routing & Switching TechnologiesChapter: BGP Advanced FeaturesSection: Community Attributes
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Question 27

The on-premise mode is recommended for controller deployment on small and midsize campus networks.

Correct Answer: A
Comprehensive and Detailed
On-premise mode refers to deploying the Huawei iMaster NCE-Campus controller within the enterprise network instead of using a cloud-based solution.
✔ Best suited for small and midsize campus networks that require:
Greater control over data security
Local network automation
No reliance on cloud connectivity
Since on-premise mode is recommended for small and midsize campus networks, the statement is TRUE.
📖 Reference: Huawei HCIE Datacom - iMaster NCE Deployment Modes
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Question 28

Which SNMP message type sent to NMS reports events that are reliable? ( Single choice questions).

Correct Answer: D
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Question 29

Which of the following statements is incorrect about adding devices on a virtualized network deployed using iMaster NCE-Campus?

Correct Answer: D
Comprehensive and Detailed In-Depth
In the iMaster NCE-Campus virtualized network management platform, devices can be added using various methods:
A . In Batches: Correct. Devices can be added in bulk for efficient management.
B . By Device Role: Correct. Devices can be grouped and managed based on their role (e.g., access, aggregation, core).
C . By Device ESN (Electronic Serial Number): Correct. The ESN uniquely identifies the device within the system.
D . By Device Model: Incorrect. The platform does not use the device model as a primary criterion for adding devices. Instead, devices are typically added by role, ESN, or batch operations.
Reference:
Huawei iMaster NCE-Campus Configuration Guide
Huawei CloudCampus Solution Documentation
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Question 30

Prefix segments and adjacency segments are globally visible and unique.

Correct Answer: B
Understanding SR-MPLS Prefix and Adjacency Segments
# What Are Prefix Segments?
* Globally unique labels assigned to network prefixes.
* Advertised via IGP (OSPF, IS-IS) with SRGB (Segment Routing Global Block).
# What Are Adjacency Segments?
* Locally significant labels assigned to direct router adjacencies.
* Not globally visible-only used within a local router's LFIB (Label Forwarding Information Base).
Why is the Answer FALSE?
# Prefix Segments are globally unique, but Adjacency Segments are only locally significant.# Adjacency Segments are not distributed globally through IGP.# Only Prefix Segments use globally advertised SRGB labels.
Real-World Application:
* Segment Routing Traffic Engineering (SR-TE): Uses prefix segments for global routing and adjacency segments for local path steering.
* 5G Core Networks: Uses SR-MPLS with Prefix SIDs for scalable path selection.
# Reference: Huawei HCIE-Datacom Guide - SR-MPLS Prefix & Adjacency Segments
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