H12-891_V1.0 Exam Dumps - HCIE-Datacom V1.0

Understanding Huawei’s Free Mobility Solution

Huawei’s Free Mobility solution is designed to ensure that users can seamlessly access the network regardless of their physical location while maintaining consistent policies.

🔹 Key Components in Free Mobility Solution:

1️⃣ iMaster NCE-Campus (Answer A - Core Role)

Manages network policies & user access.

Implements centralized policy control & orchestration.

2️⃣ Policy Enforcement Device (Answer B - Core Role)

Ensures that user policies (such as QoS, security, VLANs) are applied dynamically.

Typically a switch or gateway enforcing access control.

3️⃣ Policy Control Device (Answer D - Core Role)

Stores and dynamically assigns policies based on user role & device type.

Works closely with iMaster NCE-Campus.

🔹 Why is C (Authentication Device) NOT a Core Role?

❌ Authentication devices (such as a RADIUS or AAA server) are not a core component of Huawei’s Free Mobility solution.

They are part of the broader network security framework but not mandatory for Free Mobility.

Real-World Application:

Used in enterprise & campus networks where employees, guests, and IoT devices need seamless access while maintaining security policies.

✅ Reference: Huawei HCIE-Datacom Guide – Free Mobility Architecture & Policy Management

Understanding iMaster NCE-Campus Terminal Identification

Huawei ' s iMaster NCE-Campus is an AI-driven network management platform for campus networks.

🔹 Terminal Identification Features in iMaster NCE-Campus

Identifies device type (e.g., Laptop, Mobile, IoT device).

Detects Operating System (Windows, Linux, Android, iOS).

Determines manufacturer information (Huawei, Apple, Cisco, Dell).

Uses AI-based profiling to continuously update device fingerprints.

🔹 Real-World Application:

Improved security policies (Only authorized devices can access the network).

QoS and network optimization based on device type.

Dynamic access control based on OS and manufacturer.

✅ Reference: Huawei HCIE-Datacom Guide – AI-Driven Campus Networks with iMaster NCE

The incorrect statement is Option C, which says “A site can only belong to only one VPN.” This is false because a single site can belong to multiple VPNs if needed. For example, in some enterprise designs, a site may be part of both the Finance VPN and the Management VPN by configuring multiple routing instances (VRFs) and policies accordingly.

Exact Extract - HCIE-Datacom VPN Technologies Chapter:

“A site may be associated with one or more VPNs, depending on business requirements. This is achieved through VRF and route-target configurations.”

Comprehensive and Detailed In-Depth Explanation:

The regular expression 100.$ can be broken down as follows:

100: Matches the exact sequence of digits " 100 " .

. (dot): Represents any single character.

$: Indicates the end of the line.

Therefore, the pattern 100.$ matches any four-character sequence that starts with " 100 " and ends with any single character.

1000 (A): Matches because it has four digits, starting with " 100 " and ending with " 0 " .

1001 (B): Matches because it has four digits, starting with " 100 " and ending with " 1 " .

10000 (C): Does not match because it has five digits.

100 (D): Does not match because it only has three digits.

Comprehensive and Detailed Explanation:

✔ Breakdown of the NETCONF Configuration:

✅ (B) Huawei-YANG Model Used: The namespace contains http://www.huawei.com/netconf/vrp/huawei-vlan, indicating Huawei ' s YANG model.

✅ (C) VLAN 10 is Created: < vlanId > 10 < /vlanId > confirms VLAN 10 is configured.

✅ (D) Merge Operation Used: The xc:operation= " merge " tag ensures changes are merged rather than replacing the entire config.

❌ (A) Incorrect: The < edit-config > operation modifies the running configuration, not the startup configuration.

📖 Reference: Huawei HCIE Datacom – NETCONF Configuration Management

Huawei’s user access authentication configuration includes the following components:

AAA scheme: Defines how users are authenticated (local, RADIUS, HWTACACS, etc.).

Domain: Groups users and associates them with an AAA scheme.

Access profile: Defines access control rules like 802.1X, MAC, Portal, or multi-mode authentication.

Correct workflow:

Bind the authentication profile (which references the access profile) to the user access interface.

Not the other way around.

Incorrect statement:

D. It incorrectly states you bind the access profile to the authentication profile, when in fact, the authentication profile binds the access profile and is applied to the interface.

Correct answer: D

Comprehensive and Detailed Explanation:

The IS-IS peer output shows:

IPv4 Peer Address: 10.1.34.1

IPv6 Peer Address: FE80::2E0:FCFF:FE98:2576

MT IDs (Multi-Topology) Supported: 0 (IPv4), 2 (IPv6)

Since both IPv4 and IPv6 peer addresses are listed, it confirms that both IPv4 and IPv6 IS-IS neighbor relationships are established between R4 and ee8c.a0c2.baf3.

📖 Reference: Huawei HCIE Datacom – IS-IS Multi-Topology Support

Understanding the Command Components:

This is a Huawei CLI command used for diagnosing connectivity within a VPN instance in an MPLS network.

ping -aX → Specifies the source IP address (X) of the ping packets.

-cY → Specifies the number of ICMP Echo Request packets to send (Y).

-sZ → Defines the size (in bytes) of each ICMP Echo Request packet (Z).

-vpn-instance M → Specifies the VPN instance (VRF) M to which the ping packets belong.

Why are all options correct?

✅ A. The source IP address of the ping packets is X.

The -aX option forces the ping to originate from IP X instead of the default interface IP.

✅ B. The ping packets belong to VPN instance M.

The -vpn-instance M option ensures the ping is sent within VPN instance M, allowing verification of MPLS L3VPN routing.

✅ C. During the ping operation, the quantity of ICMP Request packets is Y.

The -cY parameter sets the number of ICMP Echo Requests to be sent, making Y the total count.

✅ D. The size of each ICMP Request packet for the ping operation is Z bytes.

The -sZ parameter defines packet size, helping to test MTU (Maximum Transmission Unit) issues.

Real-World Application:

Verifying MPLS VPN connectivity: Ensure customer networks are reachable within separate VRFs.

Testing MTU & fragmentation: Using -sZ, operators can check if packet fragmentation occurs.

Debugging asymmetric routing issues: By forcing -aX, engineers can trace return paths.

✅ Reference: Huawei HCIE-Datacom Official Guide – MPLS VPN Troubleshooting & Ping Options