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Huawei H12-891_V1.0 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Bearer WAN Planning and Deployment	15%	- Bearer Network Architecture 1. Typical bearer network structure and requirements 2. CloudWAN solution and application scenarios - High-level Technology Deployment 1. Network slicing and service bearing 2. SRv6 principles and deployment
Topic 2: Campus Network Planning and Deployment	23%	- Campus Network Service Deployment 1. User access management and security 2. WLAN planning and deployment 3. Campus network management and operation - Campus Network Architecture Design 1. CloudCampus solution architecture and features 2. Typical campus network structure and design principles
Topic 3: Advanced Routing and Switching Technologies	37%	- Advanced Routing Protocols 1. IS-IS protocol principles and deployment 2. BGP route control, policy and deployment 3. OSPF advanced features and optimization - Network Quality and Optimization 1. Traffic engineering and MPLS technology 2. QoS mechanism and deployment - Advanced Switching Technologies 1. VXLAN and EVPN principles and application 2. Ethernet protection and reliability technologies 3. Multicast routing and deployment
Topic 4: WAN Interconnection Network Planning and Deployment	8%	- WAN Service Optimization 1. WAN security and isolation design 2. WAN link reliability and load balancing - WAN Interconnection Technologies 1. Traditional WAN connection technologies 2. SD-WAN architecture and Huawei solution
Topic 5: Network Automation Technologies and Practice	17%	- Automation Foundation 1. YANG model and data modeling 2. Network programming basis and protocols - Huawei Automation Solutions 1. eSight and iMaster NCE tools 2. Configuration automation and deployment 3. API-based network operation and maintenance

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Huawei HCIE-Datacom V1.0 Sample Questions (Q197-Q202):

NEW QUESTION # 197
What can be determined from the following IS-IS peer output?
Peer information for ISIS(1):
* Peer System ID: ee8c.a0c2.baf3
* Interface: GE0/0/0
* State: Up
* HoldTime: 7s
* Type: L1
* PRI: 64
* MT IDs supported: 0(UP), 2(UP)
* Local MT IDs: 0, 2
* Area Address(es): 49.0022
* Peer IP Address(es): 10.1.34.1
* Peer IPv6 Address(es): FE80::2E0:FCFF:FE98:2576

A. R4 does not have any IS-IS neighbors.
B. Both IPv4 and IPv6 IS-IS neighbor relationships are established between R4 and ee8c.a0c2.baf3.
C. Only an IPv4 IS-IS neighbor relationship is established between R4 and ee8c.a0c2.baf3.
D. Only an IPv6 IS-IS neighbor relationship is established between R4 and ee8c.a0c2.baf3.

Answer: B

Explanation:
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

NEW QUESTION # 198
As shown in the figure, SW1 and SW2 use asymmetric IRB (Integrated Routing and Bridging) forwarding, and PC1 and PC2 communicate with each other. Which of the following is the destination MAC address of the original data frame in the packet sent from VTEP1 to VTEP2?

A. MAC C
B. MAC D
C. MAC B
D. MAC A

Answer: A

Explanation:
Comprehensive and Detailed In-Depth Explanation:
1. Understanding VXLAN Asymmetric IRB Forwarding:
InVXLAN (Virtual Extensible LAN)networks, there are two types of IRB forwarding:Symmetric IRBandAsymmetric IRB.
InAsymmetric IRB, routing occurs only at the ingress VTEP (Virtual Tunnel Endpoint).
Theingress VTEP (VTEP1)encapsulates the original data frame and sends it to theegress VTEP (VTEP2)over the VXLAN tunnel.
Thedestination MAC addressof the original Ethernet frame is theMAC address of the Layer 3 gateway (VBDIF)at the egress VTEP.
2. Analyzing the Topology:
PC1 (172.16.2.1/24) withMAC Ais sending traffic to PC2 (172.16.1.2/24) withMAC D.
Both PCs are in different subnets, so inter-subnet routing is required.
VTEP1 (1.1.1.1)on SW1 is the ingress VTEP.
VTEP2 (2.2.2.2)on SW2 is the egress VTEP.
TheVXLAN Network Identifier (VNI)for the traffic is100.
SW1 has two VBDIF interfaces:
VBDIF10 (MAC B)- Interface for BD10 (172.16.2.254).
VBDIF20 (MAC C)- Interface for BD20 (172.16.1.254).
3. Packet Flow in Asymmetric IRB:
Step 1:PC1 sends a packet destined for PC2. The packet is routed at theingress VTEP (SW1)using theVBDIF interface (VBDIF10 with MAC B).
Step 2:Theingress VTEP (SW1)encapsulates the packet in aVXLAN header(VNI 100) and sends it toVTEP2.
Step 3:Theoriginal data frame inside the VXLAN packetmust have adestination MAC addressthat matches thegateway MAC address (VBDIF20 - MAC C)at theegress VTEP (SW2).
Step 4:On reachingVTEP2, the encapsulation is removed, and the original frame withdestination MAC Cis forwarded.
Step 5:VTEP2performs Layer 3 routing to forward the packet toPC2.
4. Why MAC C is Correct:
Inasymmetric IRB forwarding, the routing decision at the ingress VTEP ensures that thedestination MACin the original frame is set to theVBDIF (gateway) MAC of the egress VTEP.
Since theegress VTEP (SW2)hasVBDIF20 (MAC C)for the destination subnet (172.16.1.0/24), thedestination MAC addressof the original frame isMAC C.

NEW QUESTION # 199
As shown in the following figure, R1 and R2 establish a neighbor relationship for Level2, which is critical:
placed as follows, then the following about The route entry for R2 is correct

A. 2021:-/64 Router will appear in the P routing table
B. 2022:/64 Routers appear in the IP routing table c.2019::/64 Routers appear in the P routing table
C. The 0:/64 router appears in the IP routing table

Answer: A,B,C

NEW QUESTION # 200
With telemetry, certain data can be sampled based on specific sampling paths. Which of the following sampling paths are supported by telemetry?

A. Interface statistics
B. CPU information
C. Information about the optical module on an interface
D. Memory information

Answer: A,B,D

Explanation:
Telemetry Data Collection in Huawei Devices
Telemetry allows real-time streaming of network performance data based on predefined sampling paths. Supported sampling paths include:
✅ A. Interface statistics
Monitors real-time traffic usage, errors, and packet loss on interfaces.
✅ C. CPU information
Tracks CPU utilization and performance metrics.
✅ D. Memory information
Monitors RAM usage and system memory consumption.
❌ B. Information about the optical module on an interface
Telemetry does not natively support direct optical module monitoring; instead, SNMP or CLI commands like display transceiver are used.
Reference from Huawei HCIE-Datacom Documentation:
Huawei Telemetry Configuration Guide - Supported Sampling Paths
HCIE-Datacom Study Material - Network Performance Monitoring with Telemetry

NEW QUESTION # 201
When you deploy LLQ, you need to configure bandwidth parameters, what is the significance of bandwidth parameters?( Single choice questions).

A. It represents a reference CIR to calculate the burst size D of the built-in tactician token bucket Changing parameters is an option because LLQ always takes precedence over other queues
B. Provides a built-in policer to limit the maximum available bandwidth of a low-latency queue during congestion
C. The parameter should be as small as possible. It means that the bandwidth is always preserved, and even if the LLQ is set, changing the parameters will reduce the available bandwidth of the interface

Answer: B

NEW QUESTION # 202
......

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