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| Section | Weight | Objectives |
|---|---|---|
| iMaster NCE-Fabric Management | 15% | - Network Simulation and Verification - Overlay Network Configuration - Fabric Management Concepts - Underlay Network Automation Deployment |
| Data Center Interconnect | 10% | - Cross-Domain VXLAN Extension - DCI Technology Overview - EVPN Multi-Site Solution |
| CloudEngine Switch Configuration | 20% | - VXLAN Configuration on CloudEngine - QinQ and VLAN Extension Technologies - BGP EVPN Configuration - CloudEngine OS Overview |
| CloudFabric Data Center Network Solution Overview | 10% | - CloudFabric Solution Components and Functions - Data Center Network Challenges and Trends - Huawei CloudFabric Solution Architecture |
| Underlying Transport Network Technologies | 15% | - Spine-Leaf Architecture - Underlay Network Planning and Design - Overlay Network Technologies (VXLAN, NVGRE) |
| VXLAN and EVPN Technologies | 20% | - EVPN Route Types and Applications - Multi-Site VXLAN EVPN Deployment - VXLAN Principles and Deployment - BGP EVPN Fundamentals |
| Data Center Network Security and O&M | 10% | - Network Troubleshooting Methods - Network Security Policies - Traffic Audit and Monitoring - iMaster NCE-FabricInsight Analytics |
インターネットで高品質かつ最新のHuaweiのH12-893_V1.0の試験の資料を提供していると言うサイトがたくさんあります。が、サイトに相関する依頼できる保証が何一つありません。ここで私が言いたいのはFast2testのコアバリューです。すべてのHuaweiのH12-893_V1.0試験は非常に重要ですが、こんな情報技術が急速に発展している時代に、Fast2testはただその中の一つです。では、なぜ受験生たちはほとんどFast2testを選んだのですか。それはFast2testが提供した試験問題資料は絶対あなたが試験に合格することを保証しますから。なんでそうやって言ったのはFast2testが提供した試験問題資料は最新な資料ですから。それも受験生たちが実践を通して証明したことです。
質問 # 45
V-STP prevents loops caused by incorrect configurations or connections in an M-LAG.
正解：B
解説：
V-STP (Virtual Spanning Tree Protocol) is a Huawei-specific enhancement of the Spanning Tree Protocol (STP) designed to prevent Layer 2 loops in complex network topologies, including Multi-Chassis Link Aggregation (M-LAG) deployments on Huawei CloudEngine (CE) series switches.
M-LAG Overview: M-LAG allows two switches to appear as a single logical device, connecting to downstream devices via Link Aggregation Groups (LAGs). Without proper loop prevention, incorrect configurations (e.g., misconfigured ports) or physical connections (e.g., redundant links) can cause broadcast storms.
V-STP Role: V-STP extends STP to handle virtualized environments and M-LAG scenarios. It ensures that only one path is active in a loop-prone topology by blocking redundant links, preventing loops caused by misconfigurations or unintended connections. In M-LAG, V-STP coordinates with the peer-link to maintain a loop-free topology.
The statement is TRUE (A) because V-STP is designed to prevent loops in M-LAG deployments due to incorrect configurations or connections.
質問 # 46
A VXLAN tunnel is identified by a pair of VTEP IP addresses. During VXLAN tunnel establishment, the local and remote VTEPs attempt to obtain each other's IP addresses. If the VTEP IP addresses are reachable to each other at Layer 3, a VXLAN tunnel can be established.
正解：B
解説：
VXLAN (Virtual Extensible LAN) tunnels are used to encapsulate Layer 2 traffic over a Layer 3 network, a key feature in Huawei's data center solutions. The endpoints of a VXLAN tunnel are VXLAN Tunnel Endpoints (VTEPs), identified by their IP addresses.
Tunnel Identification: A VXLAN tunnel is uniquely identified by the pair of VTEP IP addresses (local and remote), along with the VNI (VXLAN Network Identifier). This pair ensures the tunnel is specific to the communication path between the two VTEPs.
Tunnel Establishment: During setup, VTEPs exchange information to learn each other's IP addresses. This can occur manually (static configuration) or dynamically (e.g., via BGP EVPN). The underlay network must provide Layer 3 reachability between the VTEP IP addresses, typically using routing protocols (e.g., OSPF, BGP) to ensure IP connectivity.
Reachability Condition: If the local and remote VTEP IP addresses are reachable at Layer 3, the tunnel can be established, allowing encapsulation and decapsulation of VXLAN traffic. This is a fundamental requirement in Huawei's VXLAN implementation.
The statement is TRUE (A) because a VXLAN tunnel's identification and establishment depend on reachable VTEP IP address pairs at Layer 3.
質問 # 47
After an M-LAG works properly, the two member devices synchronize information with each other in real time. Which of the following pieces of information are synchronized between devices?
(Select All that Apply)
正解：A、C
解説：
In Huawei's M-LAG (Multi-Chassis Link Aggregation) on CE series switches, the two member devices synchronize critical information over the peer-link to ensure seamless operation and failover. Let's evaluate each option:
A). ACL information: Access Control List (ACL) configurations are typically not synchronized in M- LAG, as they are device-specific security policies. Synchronization of ACLs is not a standard feature in Huawei's M-LAG implementation. NOT SYNCHRONIZED.
B). STP status: Spanning Tree Protocol (STP) status (e.g., port roles, states) is synchronized to maintain a consistent loop-free topology across M-LAG peers, especially when V-STP or other STP variants are used. SYNCHRONIZED.
C). Device name: Device names are administrative identifiers and are not synchronized, as they do not impact traffic forwarding or M-LAG functionality. NOT SYNCHRONIZED.
D). LACP information: Link Aggregation Control Protocol (LACP) status (e.g., link states, aggregation details) is synchronized to ensure both M-LAG devices present a unified LAG to downstream devices, supporting load balancing and failover. SYNCHRONIZED.
Thus, B (STP status) and D (LACP information) are synchronized between M-LAG devices.
質問 # 48
Which of the following operations need to be performed before deployment in Easy mode?
(Select All that Apply)
正解：C、D
解説：
The Easy mode in Huawei's iMaster NCE-Fabric simplifies VXLAN fabric deployment with automated configuration. Certain pre-deployment steps are required. Let's evaluate each option:
A). Disable data synchronization upon going online for the first time: This is false. Data synchronization is typically enabled by default to ensure consistency; disabling it is not a standard pre-deployment step and is optional based on specific needs. FALSE.
B). Load the license: This is true. A valid license must be loaded into iMaster NCE-Fabric before deployment to unlock features, including Easy mode functionality. TRUE.
C). Pre-configure the access ports: This is true. Access ports on devices (e.g., server leaf nodes) need to be pre-configured (e.g., with VLANs or basic settings) to ensure connectivity before Easy mode automation begins. TRUE.
D). Configure an SSH fingerprint verification policy: This is false. SSH fingerprint verification is part of security configuration but is not a mandatory pre-deployment step for Easy mode; it can be set post- deployment or is automated. FALSE.
Thus, B (Load the license) and C (Pre-configure the access ports) are required operations before deployment in Easy mode.
質問 # 49
In the DCN architecture, spine nodes connect various network devices to the VXLAN network.
正解：B
解説：
In Huawei's Data Center Network (DCN) architecture, particularly with the CloudFabric solution, the spine-leaf topology is a common design for scalable and efficient data centers. VXLAN (Virtual Extensible LAN) is used to create overlay networks, enabling large-scale multi-tenancy and flexible workload placement.
Spine Nodes' Role: In this architecture, spine nodes act as the backbone, interconnecting leaf nodes (which connect to servers, storage, or other endpoints) and facilitating high-speed, non-blocking communication. Spine nodes typically handle Layer 3 routing and serve as VXLAN tunnel endpoints (VTEPs) or connect to devices that do, integrating the physical underlay with the VXLAN overlay network.
Connection to VXLAN: Spine nodes ensure that traffic from various network devices (via leaf nodes) is routed efficiently across the VXLAN fabric. They provide the high-bandwidth, low-latency backbone required for east-west traffic in modern data centers, supporting VXLAN encapsulation and decapsulation indirectly or directly depending on the deployment.
Thus, the statement is TRUE (A) because spine nodes play a critical role in connecting the underlay network (various devices via leaf nodes) to the VXLAN overlay, as per Huawei's DCN design principles.
質問 # 50
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