Pass the Huawei HCIE-Datacom H12-891_V1.0 Questions and answers with CertsForce

Huawei Open Programmability System (OPS) and Scripting Support

HuaweiOPS (Open Programmability System)enables network automation usingscript-based programmingfordevice management and configuration.

✅Python is the primary language integrated into Huawei OPS.

Python scripts can automate device configurations, monitoring, and troubleshooting.

OPS supports Python libraries for interacting with network APIs and CLI commands.

Used for Huawei CloudCampus, SDN, and Datacom devices.

MP-BGP is an extension of BGP-4 that supports multi-protocol address families such as IPv6, VPNv4, etc. When PE and CE exchange BGP routes, there is no need to create a BGP process per VPN on the CE. The CE typically runs a standard BGP process, while the PE maintains separate VPN routing tables (VRFs).

Exact Extract - Huawei HCIE-Datacom MP-BGP Chapter:

“CE devices use standard BGP, and multiple VPNs can share the same BGP process on the CE. The PE handles VPN route separation through VRFs and MP-BGP.”

Comprehensive and Detailed In-Depth Explanation:

When invokingRESTful APIsiniMaster NCE-Campus, the client must include theACCESS-TOKENin therequest headerto authenticate the request.

TheACCESS-TOKENis obtained throughauthenticationand is required forAPI access control.

The correct format in the HTTP header is:

Authorization: Bearer ACCESS-TOKEN

Other formats likeACCEPT-TOKEN,X-ACCEPT-TOKEN, andX ACCESS TOKENare not recognized or valid foriMaster NCE-Campus API requests.

Therefore, the correct answer isA.

Dynamic VLAN Authorization in Huawei CloudCampus

Dynamic VLAN assignmentallows users to be placed into specific VLANsbased on authentication methods, ensuring security and network segmentation.

Correct Explanations:

✅A. Wired users using 802.1X authentication receive VLAN assignments dynamically.

After authentication,the access control system (e.g., iMaster NCE-Campus)assigns VLANs dynamically.

✅C. Wireless users using 802.1X authentication also receive VLAN assignments.

Similar to wired users,wireless 802.1X authentication allows dynamic VLAN assignmentvia the RADIUS server.

✅D. Wired users using MAC authentication can receive VLAN assignments.

If a userdoes not support 802.1X, MAC authentication can still be used to assign VLANs dynamically.

Incorrect Statement Explanation:

❌B. When wireless users pass Portal authentication, they join the authorization VLANs delivered to edge nodes.

Wrong!InPortal authentication, VLAN assignmentis not dynamically deliveredbecausePortal authentication typically applies access policies, not VLAN changes.

Dynamic VLAN assignment is mainly used with 802.1X or MAC authentication.

Reference from Huawei HCIE-Datacom Documentation:

Huawei CloudCampus Configuration Guide – Dynamic VLAN Assignment and Authentication

HCIE-Datacom Training Material – VLAN Authorization in Virtualized Campus Networks

Huawei Switch Deployment Methods in CloudCampus

✅A. DHCP Option 148– Used forautomatic device registrationin iMaster NCE-Campus.

✅B. CLI (Command-Line Interface)– Traditionalmanual configuration methodusing the command-line interface.

✅C. Web Interface–Web GUI-basedconfiguration for easy management.

✅D. Huawei Registration Center–Cloud-based automatic registration and provisioningfor plug-and-play deployment.

Reference from Huawei HCIE-Datacom Documentation:

Huawei CloudCampus Deployment Guide – Device Onboarding Methods

HCIE-Datacom Training Material – Zero-Touch Deployment (ZTP) in CloudCampus

Correct Order of Steps:

1️⃣Network planning

2️⃣Site design

3️⃣Device management

4️⃣Fabric management

5️⃣VN (Virtual Network) management

6️⃣Service deployment

Understanding the iMaster NCE-Campus Deployment Process

????iMaster NCE-Campus is Huawei’s AI-driven network automation and management platform for campus networks.

????The deployment follows a structured sequence to ensure a fully operational network.

Detailed Explanation of Each Step:

✅1️⃣Network Planning(First Step)

Defines the overallnetwork architecture, topology, and business requirements.

DeterminesWAN, LAN, and WLAN coveragefor the campus.

EnsuresIP addressing, VLANs, and security policiesare planned.

✅2️⃣Site Design(Second Step)

Createssite layoutsand determinesdevice placement(switches, APs, routers).

Definespower, cabling, and uplink requirementsfor optimal connectivity.

✅3️⃣Device Management(Third Step)

Onboards network devices (e.g., switches, APs, firewalls) into iMaster NCE-Campus.

Configuresinitial settingssuch asIP addresses, interfaces, and SNMP settings.

Ensuresdevices are registered and reachablein the management platform.

✅4️⃣Fabric Management(Fourth Step)

EstablishesVXLAN-based network fabricforautomated Layer 2/3 connectivity.

ConfiguresEVPN/VXLAN overlays, VTEPs, and underlay routing.

✅5️⃣VN (Virtual Network) Management(Fifth Step)

Definesvirtual networks (VNs) for different departments, tenants, or services.

ConfiguresQoS, ACLs, and network segmentation policies.

✅6️⃣Service Deployment(Final Step)

Activatesnetwork services like DHCP, security policies, and application access.

Ensures thatend-user connectivity and application traffic policies are in place.

Why Is This the Correct Order?

✅Each step builds upon the previous one, ensuring a smooth and structured deployment process.

✅Service deployment comes last because it finalizes user access and application connectivity.

Real-World Application:

Enterprise Campus Networks:Deployssecure, scalable campus connectivity with AI-based automation.

University Campuses & Smart Cities:UsesSDN-driven network segmentation and automationto simplify operations.

✅Reference:Huawei HCIE-Datacom Guide – iMaster NCE-Campus Deployment & Automation

Comprehensive and Detailed In-Depth Explanation:

In BGP EVPN,Type 2routes (MAC/IP Advertisement routes) are used to advertise:

MAC addressesof endpoints.

ARP entries(MAC-to-IP bindings).

IRB (Integrated Routing and Bridging) routes, allowing the advertisement of both Layer 2 and Layer 3 reachability.

These routes are essential for enabling dynamic VXLAN tunnel establishment and seamless host mobility.

Type 1 (Ethernet Auto-Discovery):Used for multi-homing information.

Type 3 (Inclusive Multicast Ethernet Tag):Used for BUM (Broadcast, Unknown unicast, and Multicast) traffic.

Type 4 (Ethernet Segment):Used for identifying Ethernet segments in multi-homing scenarios.

In Huawei’sFree Mobility solution:

Authentication Point (AP): Identifies users and associates them with aSecurity Group Tag (SGT)upon access.

Policy Enforcement Point (PEP): Enforces policiesbetween different security groups, such as allowing or denying traffic.

Key points:

Ais correct — The PEP enforces inter-group access based on defined policies.

Bis incorrect — AP and PEPcan be on separate devices, offering deployment flexibility.

Cis incorrect — Thepolicy enforcementhappens at thePEP, not the AP. AP's job is to authenticate and tag traffic.

Dis correct — AP and PEP can be deployed ondifferent devices.

Correct answers: A, D

Comprehensive and Detailed In-Depth Explanation:

Analyzing the output:

A. Key authentication is disabled for the tunnel:Correct. The output explicitly states"key disabled".

B. The destination IP address of the tunnel is 10.0.3.3:Correct. The output shows"destination 10.0.3.3".

C. The tunnel is a GRE tunnel:Correct. The output states"Tunnel protocol/transport GRE/IP".

D. Keepalive detection is enabled on the tunnel:Incorrect.The output clearly shows"keepalive disabled".

Therefore, the correct answer isDbecause the tunnel doesnot have keepalive enabled.

SSH Public Key Authentication

Inpublic key authentication mode, the SSH client must generate akey pair (public and private keys)before connecting to an SSH server.

✅C. ssh-keygen -t dsa (Correct Answer)

DSA (Digital Signature Algorithm) key generationfor SSH authentication.

Generates aprivate key (id_dsa)and apublic key (id_dsa.pub).