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Huawei H19-402_V1.0 Certification Exam is a comprehensive exam that requires candidates to have a deep understanding of data center network planning and design. H19-402_V1.0 exam is designed to test the candidate's ability to analyze complex network scenarios and come up with effective solutions. H19-402_V1.0 Exam is also designed to test the candidate's ability to work under pressure and meet tight deadlines. Passing this certification exam is a great way to demonstrate your expertise in data center network planning and design and enhance your career prospects.

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The Huawei H19-402_V1.0 exam consists of multiple-choice questions that cover various topics related to data center network planning and design. Candidates are required to have a good understanding of network design principles, network architecture, virtualization, storage networking, and security. They must also be familiar with industry best practices and standards related to data center network planning and design. With the Huawei H19-402_V1.0 Certification, you can demonstrate your expertise in these areas and take your career to the next level.

Huawei HCSP-Presales-Data Center Network Planning and Design V1.0 Sample Questions (Q59-Q64):

NEW QUESTION # 59
UPS5000-E 100kVA, which of the following input switches is most suitable for the machine?

Answer: B


NEW QUESTION # 60
RDMA is a direct memory access technology used on InfiniBand networks. It directly transfers data from the memory of one computer into that of another computer without involving either one ' s operating system or CPU processing. This achieves high bandwidth, low delay, and low resource utilization on the network.

Answer: B

Explanation:
RDMA (Remote Direct Memory Access) is a key technology in Huawei's Intelligent Lossless Data Center Network , widely used in high-performance scenarios such as AI training, distributed storage, and HPC.
The statement is correct because RDMA enables direct memory-to-memory data transfer between servers without involving the CPU or operating system in the data path. This bypass mechanism significantly reduces overhead and enables:
Ultra-low latency (microsecond-level communication)
High throughput (efficient use of bandwidth)
Low CPU utilization , freeing compute resources for applications
Although RDMA was originally developed for InfiniBand networks , it is now widely used over Ethernet through technologies like RoCE (RDMA over Converged Ethernet) in Huawei CloudFabric solutions.
To support RDMA effectively, Huawei implements lossless Ethernet mechanisms such as PFC, ECN, and congestion control algorithms to ensure reliable packet delivery.
Therefore, the statement accurately describes RDMA characteristics and is TRUE .


NEW QUESTION # 61
The power supply types of FusionModule800 and FusionModule500 are 380/400/415/3Ph/50Hz and 220/230/240/1Ph/50HZ respectively.

Answer: A


NEW QUESTION # 62
UPS supports multiple systems to meet customer grid application scenarios. Which systems does the UPS2000-G15/20KVA model support? (Multiple choice)

Answer: A,B,D


NEW QUESTION # 63
(Border leaf nodes are deployed in an M-LAG active-active device group and form square looped networking with PEs. Dual-egress connections provide link-level and device-level protection. In this scenario, no bypass link needs to be deployed between the border leaf nodes.)

Answer: B

Explanation:
In Huawei CloudFabric design, M-LAG (Multi-Chassis Link Aggregation) is widely used to provide active- active forwarding and high availability at the access and border layers. When border leaf nodes are deployed in an M-LAG pair, they typically connect to upstream PE (Provider Edge) devices in a dual-homing (square topology) manner, ensuring both link-level and device-level redundancy.
However, Huawei design guidelines clearly state that an interconnection link (commonly called a peer-link or bypass link) between M-LAG devices is mandatory. This link is essential for synchronization of forwarding states, MAC address tables, ARP/ND entries, and control plane information between the two devices. It also ensures proper traffic forwarding in failure scenarios, such as when one device loses its uplinks but remains operational.
Without this peer-link, traffic consistency and loop prevention mechanisms cannot function correctly, leading to potential traffic loss or loops. Therefore, even in dual-egress scenarios with PE devices, the bypass/peer link is still required.
Hence, the statement is FALSE.


NEW QUESTION # 64
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