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| Section | Weight | Objectives |
|---|---|---|
| Huawei CloudFabric Solution | 17% | - Architecture and value - Solution positioning and components |
| Security and O&M Design | 7% | - Network security design - Intelligent O&M and monitoring |
| VXLAN and BGP EVPN | 10% | - BGP EVPN control plane and forwarding - VXLAN principles and implementation |
| iMaster NCE-Fabric | 6% | - Network management and automation - Functions and architecture |
| M-LAG | 9% | - M-LAG working mechanism - Deployment and application scenarios |
| CloudFabric Network Design | 7% | - Overlay network design - Underlay network design - Multi-DC interconnection design |
| CloudFabric Service Automation Scenarios | 4% | - Container network solutions - Network virtualization integration - Cloud-network integration |
| Technical Fundamentals of Data Communications Networks | 9% | - High availability technologies - Routing and switching basics |
| Data Center Network Overview | 16% | - Basic concepts and development trends of DCN - Typical DCN architecture models |
| Intelligent Lossless Data Center Network | 8% | - Congestion control and QoS - Lossless network principles |
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NEW QUESTION # 17
Incast traffic in distributed AI computing and in the distributed storage architecture are prone to cause network congestion.
Answer: A
Explanation:
In Huawei data center networking, especially within Intelligent Lossless Data Center Network design, incast traffic is a well-known challenge in distributed systems such as AI computing clusters and distributed storage architectures .
In an incast scenario , a large number of servers simultaneously send traffic to a single destination (e.g., parameter server in AI training or storage node in distributed storage). This sudden aggregation of traffic can quickly overflow switch buffers , leading to packet loss, increased latency, and throughput degradation .
Huawei identifies incast as a primary cause of network congestion in modern data centers. To mitigate this, CloudFabric solutions implement advanced congestion control technologies such as:
PFC (Priority Flow Control) to prevent packet loss
ECN (Explicit Congestion Notification) for early congestion signaling
AI-driven traffic scheduling and load balancing
These mechanisms help build a lossless Ethernet fabric , which is essential for RDMA-based AI workloads and high-performance storage systems.
Therefore, the statement is TRUE , as incast traffic is indeed prone to causing congestion in such environments.
NEW QUESTION # 18
Which of the following UPS does not have a neutral line?
Answer: A
NEW QUESTION # 19
NETCONF provides a lock mechanism to prevent conflicts between multiple users ' configurations. SNMP does not provide such a mechanism when multiple users perform operations on the same configuration item.
Answer: A
Explanation:
In Huawei's intelligent O & M architecture, NETCONF is a modern network management protocol designed for transactional, reliable, and concurrent-safe configuration management . One of its key features is the lock mechanism , which allows a user or system to lock a configuration datastore (such as candidate or running configuration) to prevent other users or processes from making conflicting changes simultaneously. This ensures consistency, atomic operations, and rollback capability , which are critical in automated data center environments like CloudFabric.
On the other hand, SNMP (Simple Network Management Protocol) is primarily designed for monitoring and basic configuration , but it lacks advanced transaction control features. SNMP does not support configuration locking or transactional commits, meaning multiple users can overwrite each other's changes, potentially leading to configuration inconsistencies.
Huawei strongly recommends using NETCONF/YANG-based automation (e.g., via iMaster NCE-Fabric) for modern data center operations because it provides structured data modeling, conflict prevention, and programmability , which SNMP cannot offer.
Therefore, the statement is TRUE .
NEW QUESTION # 20
The light-load dehumidification function of NetCoL5000-A042H full-cabinet row-level air-cooled variable frequency precision air conditioner supports stable dehumidification under the lowest () load. It can solve the problem of frequent start and stop of air conditioners and inability to dehumidify in low-load and high-humidity environments, and reduce the risk of condensation in the computer room.
Answer: C
NEW QUESTION # 21
(What are the application scenarios of the overlay network?)
Answer: A,B,C,D
Explanation:
Huawei data center design documents clearly state that overlay networks (typically based on VXLAN EVPN) are highly versatile and support multiple application scenarios across modern and traditional environments.
In private cloud scenarios , overlay networks enable resource pooling and seamless data center interconnection, allowing flexible workload migration and multi-tenant isolation. For traditional IDC hosting services , overlays provide improved scalability and tenant isolation compared to VLAN-based designs, making them suitable for legacy-to-cloud evolution.
In public cloud environments (IaaS/PaaS/SaaS) , overlay networks are essential for large-scale multi-tenancy, enabling logical network segmentation, automation, and elastic service provisioning. Similarly, in NFV cloud scenarios , overlays integrate with SDN and NFV architectures to support virtualized network functions, service chaining, and dynamic service deployment.
Huawei CloudFabric emphasizes that overlay technology is not limited to a single use case but is a foundational technology across all modern data center architectures. Therefore, all listed options are valid application scenarios.
NEW QUESTION # 22
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