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| Section | Weight | Objectives |
|---|---|---|
| Data Center Network Security and O&M | 10% | - Traffic Audit and Monitoring - iMaster NCE-FabricInsight Analytics - Network Troubleshooting Methods - Network Security Policies |
| Underlying Transport Network Technologies | 15% | - Overlay Network Technologies (VXLAN, NVGRE) - Underlay Network Planning and Design - Spine-Leaf Architecture |
| iMaster NCE-Fabric Management | 15% | - Fabric Management Concepts - Overlay Network Configuration - Underlay Network Automation Deployment - Network Simulation and Verification |
| CloudEngine Switch Configuration | 20% | - QinQ and VLAN Extension Technologies - VXLAN Configuration on CloudEngine - BGP EVPN Configuration - CloudEngine OS Overview |
| VXLAN and EVPN Technologies | 20% | - Multi-Site VXLAN EVPN Deployment - EVPN Route Types and Applications - BGP EVPN Fundamentals - VXLAN Principles and Deployment |
| Data Center Interconnect | 10% | - DCI Technology Overview - Cross-Domain VXLAN Extension - EVPN Multi-Site Solution |
| CloudFabric Data Center Network Solution Overview | 10% | - Data Center Network Challenges and Trends - Huawei CloudFabric Solution Architecture - CloudFabric Solution Components and Functions |
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質問 # 18
A cloud provider advertises tenant IP prefixes across the EVPN fabric without associating them directly with endpoint MAC addresses. Which EVPN route type performs this function?
正解:A
解説:
Type 5 IP Prefix routes advertise Layer 3 network prefixes across the EVPN fabric. They are commonly used for inter-subnet routing and tenant route distribution rather than endpoint MAC learning.
質問 # 19
Which of the following statements are true about the tenant service model? (Select All that Apply)
正解:A、D
解説:
The tenant service model in Huawei's data center networks (e.g., CloudFabric with SDN) organizes resources for multi-tenancy. Let's evaluate each statement:
A . A tenant can apply for independent compute, storage, and network resources: This is true. Tenants in a multi-tenant environment can request isolated compute (VMs), storage (volumes), and network (VLANs/VXLAN VNIs) resources, a core feature of Huawei's tenant isolation model. TRUE.
B . One logical router is mapped to one VRF: This is true. A Virtual Routing and Forwarding (VRF) instance is associated with a logical router to provide isolated Layer 3 routing for a tenant, a standard practice in Huawei's network virtualization. TRUE.
C . An EPG can have only one subnet: This is false. An Endpoint Group (EPG) in Huawei's ACI-like models can span multiple subnets, grouping endpoints (e.g., VMs) based on policies, not limited to a single subnet. FALSE.
D . A subnet supports the access of only one VM: This is false. A subnet can support multiple VMs, as it defines an IP address range for a network segment, not a one-to-one VM mapping. FALSE.
Thus, A and B are true statements about the tenant service model.
質問 # 20
Which of the following statements is false about VM service traffic in the computing scenario?
正解:D
解説:
In Huawei's CloudFabric computing scenario, VM service traffic involves virtualized environments with VXLAN overlays and traditional VLANs. Let's evaluate each statement:
A . Traffic inside a fabric is VXLAN encapsulated: This is true. Within a CloudFabric network, VXLAN encapsulation is used to transport traffic across the fabric, enabling overlay networking for VMs. TRUE.
B . Inter-VPC traffic must pass through the firewall: This is false. Inter-VPC (Virtual Private Cloud) traffic can be routed directly between VPCs using a gateway or router (e.g., with EVPN Type 5 routes) without necessarily passing through a firewall, depending on security policies. Firewalls are optional for inter-VPC traffic, not mandatory. FALSE.
C . Traffic between VAS devices and service leaf nodes is VLAN encapsulated: This is true. Value-Added Services (VAS) devices (e.g., load balancers) often connect to service leaf nodes using VLAN encapsulation, especially in traditional or hybrid deployments. TRUE.
D . Traffic between vSwitches on virtual servers and server leaf nodes is VLAN encapsulated: This is true. Traffic from virtual switches (vSwitches) on hypervisors to physical server leaf nodes typically uses VLAN encapsulation over the physical NICs, before VXLAN overlay if applicable. TRUE.
Thus, B is the false statement because inter-VPC traffic does not always require a firewall.
質問 # 21
Which Huawei data center design principle contributes most directly to horizontal expansion when additional racks are introduced?
正解:C
解説:
Spine-leaf architectures scale horizontally by adding spine or leaf switches while maintaining predictable latency and ECMP forwarding. This modular approach supports incremental growth without major architectural redesign.
質問 # 22
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:A
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 # 23
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2026年Tech4Examの最新H12-893_V1.0 PDFダンプおよびH12-893_V1.0試験エンジンの無料共有:https://drive.google.com/open?id=1TALi74iXKkUdfOqqygaJWCC3p2j9j2yq