Get Huawei H12-891_V1.0 Exam Practice Questions - Real and Updated

Answer : A, B, C, D

Comprehensive and Detailed In-Depth

The free mobility function in iMaster NCE-Campus allows users to maintain consistent security policies regardless of their physical location within the campus network. To correctly implement this function, the administrator must:

A . Define security groups: Group users and devices based on roles or functions.

B . Deliver the inter-group policy: Apply policies that define how different security groups interact.

C . Deploy a policy control matrix: Establish a matrix that specifies the access control policies between security groups.

D . Select the policy enforcement point: Choose devices or interfaces where policies are enforced, such as switches or routers.

All four steps are crucial for achieving dynamic policy enforcement in a virtualized and mobility-oriented campus network.

Huawei HCIE Datacom Official Certification Guide

Huawei iMaster NCE-Campus Configuration Guide

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Answer : A

Understanding SR-MPLS Label Calculation

SR-MPLS uses Segment Routing Global Block (SRGB) and Prefix SIDs to assign labels dynamically. The MPLS label for a node's loopback interface is calculated as follows:

MPLSLabel=SRGBBase+PrefixSIDIndex

Where:

SRGB Base = 20000 (as given in the figure)

Prefix SID Index = 30 (configured for R3's Loopback1)

Label Calculation:

20000+30=20030

Thus, the MPLS label corresponding to the loopback1 interface of R3 is 20030.

Why the Answer is 20030?

The SRGB defines the base label range.

Each router is assigned a unique Prefix SID index.

The label is dynamically computed by adding the Prefix SID Index to the SRGB Base.

Why Other Numbers Are Incorrect?

Any value outside the range 20000-21000

Would be incorrect because it must be within R3's SRGB range.

Using the Prefix SID Index directly (30)

Incorrect because MPLS labels are not assigned directly using Prefix SIDs; they are computed using the SRGB.

Reference: Huawei HCIE Datacom -- SR-MPLS Label Calculation and SRGB

Answer : C

Comprehensive and Detailed In-Depth

After Portal authentication on a wireless network, the following parameters can be used for authorization:

free-rule (A): Allows traffic even before authentication.

UCL (B): User Control List, specifying user permissions.

ACL (D): Access Control List, defining permitted or denied traffic.

The IP address (C), however, is not used as an authorization parameter directly. Instead, IP addresses are typically assigned after successful authentication, and the control policies are applied based on user profiles or access lists.

Huawei HCIE Datacom Official Certification Guide

Huawei WLAN Authentication Configuration Guide

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Answer : D

Comprehensive and Detailed In-Depth

During a network migration test, it is crucial not only to verify that the network itself is functioning correctly but also to ensure that upper-layer application services are running properly on the newly migrated network. Migration testing aims to confirm that the transition has not disrupted service functionality.

Option A and C focus solely on network performance, which is necessary but insufficient.

Option B refers to command outputs, which are technical checks and do not guarantee service continuity.

Option D correctly identifies that successful migration is indicated by proper operation of upper-layer application services, as the primary purpose of a network is to support these applications.

Huawei HCIE Datacom Official Certification Guide

Huawei Network Migration Best Practices

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Answer : A, B, C, D

Understanding 802.1X Authentication in Enterprise Networks

What is 802.1X?

802.1X is a network access control (NAC) protocol that enforces authentication before allowing a device to connect to a LAN.

It uses EAP (Extensible Authentication Protocol) over RADIUS for user verification.

Typically deployed in corporate and campus networks for secure wired and wireless access.

How Does 802.1X Work?

1 Client (Supplicant) Requests network access.

2 Switch (Authenticator) Forwards request to RADIUS server.

3 RADIUS Server Verifies credentials & grants access.

Mandatory Steps to Enable 802.1X on SW3

A. Configure an AAA Scheme

Defines authentication, authorization, and accounting (AAA) methods.

Links 802.1X authentication to the RADIUS server.

B. Configure an Authentication Profile

Specifies how authentication is handled on the switch.

Associates 802.1X authentication with an AAA scheme.

C. Configure an Authentication Domain

Groups authentication policies for different user types.

Maps AAA scheme to user login requests.

D. Configure an 802.1X Access Profile

Applies 802.1X authentication to specific switch ports (GE0/0/2 & GE0/0/3).

Ensures that only authenticated users can pass traffic.

Why Are All Four Steps Necessary?

Each step plays a critical role in enabling 802.1X authentication and linking it to the RADIUS server.

Without any one of these configurations, the 802.1X authentication process would fail.

Real-World Application:

Enterprise Wired Security: Ensures that only authenticated devices access corporate networks.

University Campuses & Public Wi-Fi: Prevents unauthorized access to secure LAN environments.

Reference: Huawei HCIE-Datacom Guide -- 802.1X Authentication & RADIUS Server Configuration