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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: iMaster NCE-Fabric Management | 15% | - Network Simulation and Verification - Fabric Management Concepts - Underlay Network Automation Deployment - Overlay Network Configuration |
| Topic 2: Data Center Network Security and O&M | 10% | - Network Security Policies - Traffic Audit and Monitoring - iMaster NCE-FabricInsight Analytics - Network Troubleshooting Methods |
| Topic 3: Data Center Interconnect | 10% | - DCI Technology Overview - EVPN Multi-Site Solution - Cross-Domain VXLAN Extension |
| Topic 4: CloudFabric Data Center Network Solution Overview | 10% | - Data Center Network Challenges and Trends - CloudFabric Solution Components and Functions - Huawei CloudFabric Solution Architecture |
| Topic 5: Underlying Transport Network Technologies | 15% | - Spine-Leaf Architecture - Underlay Network Planning and Design - Overlay Network Technologies (VXLAN, NVGRE) |
| Topic 6: CloudEngine Switch Configuration | 20% | - QinQ and VLAN Extension Technologies - BGP EVPN Configuration - VXLAN Configuration on CloudEngine - CloudEngine OS Overview |
| Topic 7: VXLAN and EVPN Technologies | 20% | - BGP EVPN Fundamentals - VXLAN Principles and Deployment - EVPN Route Types and Applications - Multi-Site VXLAN EVPN Deployment |
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NEW QUESTION # 24
Which underlay characteristic is most important for ensuring reliable VXLAN overlay communication across a spine-leaf fabric?
Answer: A
Explanation:
VXLAN relies entirely on an IP underlay. Every VTEP must reach every other VTEP through stable IP routing. Layer 2 mechanisms such as STP or native VLAN settings are not primary overlay requirements.
NEW QUESTION # 25
Which of the following operations need to be performed before deployment in Easy mode? (Select All that Apply)
Answer: B,C
Explanation:
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.
NEW QUESTION # 26
Which of the following statements are true about a routing design that employs OSPF on the underlay network of a DC? (Select All that Apply)
Answer: A,D
Explanation:
OSPF (Open Shortest Path First) is a routing protocol used in the underlay network of Huawei's CloudFabric DCNs. Let's evaluate each statement:
A . Typically, the IP address of Loopback0 is configured as the VTEP IP address and the same IP address is planned for active-active leaf nodes in the same group: This is true. Loopback0 IP is commonly used as the VTEP IP for stability, and in active-active leaf node groups (e.g., M-LAG), the same IP can be configured with VRRP or anycast to ensure consistency. TRUE.
B . The network type of spine and leaf nodes can be set to P2P in order to accelerate convergence: This is true. Setting OSPF network type to Point-to-Point (P2P) on spine-leaf links reduces overhead (e.g., no DR/BDR election) and speeds up convergence, a recommended practice in Huawei DCNs. TRUE.
C . This routing design is recommended when the DC has more than 300 switches: This is false. OSPF is suitable for smaller to medium-sized DCNs (e.g., up to 200-300 switches). For larger networks (>300 switches), EBGP is preferred due to better scalability and reduced complexity. FALSE.
D . It is recommended that all devices be planned in Area 0: This is false. While a single Area 0 is possible for small DCNs, multi-area OSPF is recommended for larger networks to manage scalability and reduce routing table size, avoiding a flat Area 0 design. FALSE.
Thus, A and B are true statements about OSPF routing design in a DC underlay.
NEW QUESTION # 27
Which of the following statements is false about the overlay technology and VXLAN protocol?
Answer: A
Explanation:
VXLAN is an overlay technology that encapsulates Layer 2 frames within UDP packets to create scalable virtual networks, widely used in Huawei's data center architectures. Let's evaluate each statement:
A . A VXLAN tunnel endpoint that performs encapsulation is called a VNI: This is incorrect. A VXLAN Tunnel Endpoint (VTEP) is the device (physical or virtual) that performs encapsulation and decapsulation. The VNI (VXLAN Network Identifier) is a 24-bit field in the VXLAN header that identifies the virtual network, not the endpoint. FALSE.
B . VXLAN uses ECMP of the underlay network to improve network forwarding performance: Equal-Cost Multi-Path (ECMP) routing in the underlay network allows VXLAN to distribute traffic across multiple paths, enhancing load balancing and performance. This is a standard feature in Huawei's VXLAN implementations. TRUE.
C . A VXLAN network is built based on UDP: VXLAN encapsulates Ethernet frames within UDP packets (using port 4789), making it a UDP-based overlay protocol. This is a core characteristic of VXLAN. TRUE.
D . VXLAN expands the number of subnets to 16 million and supports multi-tenancy: With a 24-bit VNI, VXLAN supports up to 16 million (2
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