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| Section | Weight | Objectives |
|---|---|---|
| VXLAN and EVPN Technologies | 20% | - EVPN Route Types and Applications - VXLAN Principles and Deployment - Multi-Site VXLAN EVPN Deployment - BGP EVPN Fundamentals |
| iMaster NCE-Fabric Management | 15% | - Network Simulation and Verification - Fabric Management Concepts - Overlay Network Configuration - Underlay Network Automation Deployment |
| CloudEngine Switch Configuration | 20% | - QinQ and VLAN Extension Technologies - VXLAN Configuration on CloudEngine - 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% | - Overlay Network Technologies (VXLAN, NVGRE) - Spine-Leaf Architecture - Underlay Network Planning and Design |
| Data Center Network Security and O&M | 10% | - Network Security Policies - Traffic Audit and Monitoring - Network Troubleshooting Methods - iMaster NCE-FabricInsight Analytics |
| Data Center Interconnect | 10% | - EVPN Multi-Site Solution - Cross-Domain VXLAN Extension - DCI Technology Overview |
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NEW QUESTION # 84
Which of the following can be deployed to enhance DC reliability? (Select All that Apply)
Answer: A,C,D
Explanation:
Reliability in Huawei's CloudFabric data centers is enhanced through various mechanisms. Let's evaluate each option:
A). Power supply redundancy: This is true. Redundant power supplies (e.g., dual PSUs) ensure uninterrupted operation during power failures, a key reliability feature. TRUE.
B). M-LAG (Multi-Chassis Link Aggregation): This is true. M-LAG provides high availability by allowing active-active forwarding and failover between switches, enhancing network reliability.
TRUE.
C). Monitor Link: This is false. Monitor Link is a Huawei feature for link status monitoring, not a direct reliability enhancement mechanism like redundancy or clustering. FALSE.
D). Controller cluster: This is true. A clustered SDN controller (e.g., iMaster NCE-Fabric) ensures high availability and failover, improving network management reliability. TRUE.
Thus, A, B, and D enhance DC reliability.
NEW QUESTION # 85
In which of the following phases can CloudFabric implement full-lifecycle automatic network management and control? (Select All that Apply)
Answer: A,B,C,D
Explanation:
Huawei's CloudFabric solution provides an SDN-based framework for data center network management, supporting automation across the network lifecycle. Let's evaluate each phase:
A . Planning and construction: This is true. CloudFabric automates network design, resource allocation, and deployment during the planning and construction phase using tools like iMaster NCE. TRUE.
B . Service provisioning: This is true. Automated service orchestration (e.g., VXLAN tunnel setup, tenant configuration) is a key feature during provisioning. TRUE.
C . O&M and monitoring: This is true. CloudFabric offers real-time monitoring, fault detection, and performance optimization through centralized management. TRUE.
D . Change optimization: This is true. The solution supports automated upgrades, policy adjustments, and optimization based on analytics, covering the change management phase. TRUE.
All phases A, B, C, and D are supported by CloudFabric's full-lifecycle automation.
NEW QUESTION # 86
A tenant requires independent Layer 3 routing tables while sharing the same physical VXLAN fabric with other tenants. Which technology provides logical separation of routing information?
Answer: A
Explanation:
A VRF maintains independent routing tables, allowing multiple tenants to coexist without exchanging routing information. VLAN separates Layer 2 domains only, while MSTP and LACP address spanning tree and link aggregation respectively.
NEW QUESTION # 87
Which of the following statements is false about VXLAN tunnel establishment?
Answer: C
Explanation:
VXLAN (Virtual Extensible LAN) tunnels are used to encapsulate Layer 2 traffic over a Layer 3 network, a key component in Huawei's CloudFabric data center solutions. Let's evaluate each statement:
A). A VXLAN tunnel is identified by a pair of VTEPs: This is true. A VXLAN tunnel is identified by the pair of VXLAN Tunnel Endpoint (VTEP) IP addresses (local and remote), along with the VNI (VXLAN Network Identifier). This ensures unique tunnel identification. TRUE.
B). After a tunnel is established, if one end of the tunnel goes Down, the other end may not go Down:
This is true. VXLAN tunnels are unidirectional, and the status of one end does not automatically affect the other unless the underlay network connectivity (e.g., Layer 3 reachability) is lost. The remote VTEP may remain operational if it can still encapsulate/decapsulate traffic. TRUE.
C). For a static tunnel, you need to manually configure the local and remote VNIs: This is true. In a static VXLAN tunnel, administrators must manually configure the VNI and VTEP IP addresses on both ends, as there is no dynamic control plane (e.g., BGP EVPN) to automate the process.
TRUE.
D). Dynamic tunnels depend on EVPN Type 5 routes to transmit information: This is false.
Dynamic VXLAN tunnels rely on BGP EVPN as the control plane, but Type 5 routes (IP Prefix routes) are specifically used for advertising host IP routes and external network routes, not for general tunnel establishment. Dynamic tunnel setup primarily uses Type 2 (MAC/IP Advertisement) and Type 3 (Multicast) routes to exchange VNI and VTEP information. Type 5 routes are relevant for Layer 3 routing, not the initial tunnel setup. FALSE.
Thus, D is the false statement because dynamic tunnels depend on EVPN Type 2 and Type 3 routes, not Type 5, for initial establishment.
NEW QUESTION # 88
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: B,C
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 # 89
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