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| Section | Objectives |
|---|---|
| Data Center Switching and Routing Technologies | - VXLAN and overlay networking - OSPF and BGP in data center environments - Layer 2/Layer 3 forwarding mechanisms |
| Data Center Virtualization and SDN | - Network virtualization and tenant isolation - Huawei CloudFabric concepts - SDN architecture and controller-based networking |
| Data Center Security and Reliability Design | - Security zoning and segmentation - DDoS mitigation and access control - Fault detection and recovery mechanisms |
| Data Center Network Architecture Principles | - High availability and redundancy design - Scalability and capacity planning - Data center network topology design (Spine-Leaf) |
| Deployment and Operations | - Monitoring and O&M practices - Troubleshooting methodologies - Data center network deployment planning |
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NEW QUESTION # 25
The water inlet slope of the fan coil condensate tray should be no less than?
Answer: D
NEW QUESTION # 26
UPS5000 -E only needs to be equipped with () to easily realize the N+X power supply system, which is simple and convenient to operate?
Answer: A
NEW QUESTION # 27
(Which of the following is not a capability of network overlay?)
Answer: B
Explanation:
In Huawei CloudFabric and VXLAN-based overlay networking, the overlay provides abstraction, flexibility, and scalability by decoupling logical services from the physical infrastructure. NVEs (Network Virtualization Edge nodes) can indeed be deployed on physical switches (such as leaf switches), which is a fundamental capability of hardware-based VXLAN fabrics. Additionally, overlay networks are designed to meet the needs of private cloud environments, offering high performance, simplified O & M, and enhanced security through network segmentation (e.g., VXLAN VNIs).
Overlay networks also support access for both virtual machines and physical servers, ensuring consistent connectivity regardless of workload type.
However, statement D is incorrect. In Huawei's architecture, especially with BGP EVPN-based VXLAN, the control plane is distributed rather than relying on a controller to synchronously deliver flow tables. Devices dynamically learn and exchange forwarding information using EVPN. Even in SDN-based scenarios with iMaster NCE-Fabric, policy delivery is not strictly synchronous flow table pushing in the traditional sense (like OpenFlow).
Therefore, "controller delivers flow tables synchronously" is not a standard capability of Huawei overlay networks, making option D incorrect.
NEW QUESTION # 28
Which of the following is not an advantage of the distributed VXLAN gateway networking?
Answer: C
Explanation:
In Huawei CloudFabric VXLAN architecture, distributed gateway networking is designed to overcome the limitations of centralized gateway models by pushing Layer 3 gateway functionality down to leaf nodes .
Options B, C, and D are all true advantages of distributed gateways. B highlights deployment flexibility, where a leaf can act as both Layer 2 and Layer 3 VXLAN gateway, enabling efficient east-west traffic forwarding. C and D emphasize improved scalability: each leaf only maintains local ARP/MAC entries , avoiding the bottleneck of a centralized device learning all endpoints. This significantly reduces resource consumption and enhances horizontal scaling.
Option A , however, describes a characteristic of centralized gateway architecture , where inter-subnet traffic is handled by a central node. This approach leads to suboptimal forwarding paths and potential performance bottlenecks, which distributed gateways are specifically designed to eliminate.
Huawei best practices strongly recommend distributed VXLAN gateways for modern data centers due to their scalability, optimal traffic paths, and reduced resource pressure .
Therefore, the correct answer is A .
NEW QUESTION # 29
ECC800 data center controller does not support log export
Answer: B
NEW QUESTION # 30
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