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Huawei H19-308_V4.0 Exam Overview:

Certification Vendor:Huawei
Exam Name:HCSA-Presales-Storage V4.0 Exam (H19-308_V4.0)
Exam Number:H19-308_V4.0
Exam Duration:90 minutes
Related Certifications:HCSA
HCIA
HCIP
Available Languages:English, Chinese
Exam Format:Multiple choice, Single choice, True/False
Sample Questions:Huawei H19-308_V4.0 Sample Questions
Exam Way:Online proctored or authorized test center
Pre Condition:No strict prerequisite required; basic IT and storage knowledge recommended.

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Huawei H19-308_V4.0 Exam Syllabus Topics:

TopicDetails
Topic 1
  • OceanStor Pacific: OceanStor Pacific is Huawei's distributed storage for massive-scale data management and cloud-native applications. It provides scalability, resilience, and performance for big data, AI workloads, and large-scale storage.
Topic 2
  • OceanStor New Hybrid Flash Storage: OceanStor Hybrid Flash combines flash and disk storage to balance performance and cost-effectiveness. This architecture optimizes resources by placing performance-sensitive data on flash and capacity-oriented data on disk.
Topic 3
  • OceanStor Dorado: OceanStor Dorado is Huawei's all-flash storage solution for mission-critical applications demanding ultra-low latency. This platform leverages NVMe technology and intelligent management to accelerate digital transformation.
Topic 4
  • Backup and Disaster Recovery: Backup and disaster recovery strategies protect organizations from data loss through redundant copies of critical information. Comprehensive backup solutions ensure business continuity and enable rapid recovery to minimize downtime.

Huawei HCSA-Presales-Storage V4.0 Sample Questions (Q79-Q84):

NEW QUESTION # 79
To reduce costs, general-purpose servers are commonly used for object storage.

Answer: A


NEW QUESTION # 80
Which of the following is the most-important characteristic of OLTP?

Answer: B


NEW QUESTION # 81
The new-gen OceanStor hybrid flash storage uses a copy-on-write (COW) architecture.

Answer: A

Explanation:
The new-generation OceanStor hybrid flash storage uses a redirect-on-write (ROW) architecture, not copy-on-write (COW). ROW is more efficient for handling snapshot operations and reduces write amplification.


NEW QUESTION # 82
Which of the following storage services does OceanStor Pacific provide? (Choose all that apply.)

Answer: A,B,C

Explanation:
OceanStor Pacific provides support for object storage, file storage, and HDFS (Hadoop Distributed File System), making it versatile for handling large-scale unstructured data and big data applications. However, it does not natively support block storage, which is typically handled by other types of storage systems, such as SAN solutions.


NEW QUESTION # 83
Which statements are correct about NVMe over Fabrics (NVMe-oF) (RoCE v2)? (Select all that apply)

Answer: A,B

Explanation:
NVMe over Fabrics (NVMe-oF) using the RoCE v2 (RDMA over Converged Ethernet) protocol is a high- speed communication technology supported by Huawei OceanStor Dorado systems. Option B is correct because RoCE v2 utilizes RDMA, which allows data to be transferred directly from the memory of one computer to another without involving the CPU of either system. This significantly reduces latency and CPU overhead compared to traditional iSCSI.
Option C is correct because RoCE v2 requires a " Lossless Ethernet " environment to function correctly.
Traditional Ethernet (Option A) is a " best-effort " delivery system that allows for packet drops during congestion; however, RDMA protocols are highly sensitive to packet loss. To support RoCE v2, the network must implement Data Center Bridging (DCB) features like Priority Flow Control (PFC) and Enhanced Transmission Selection (ETS) to ensure a zero-packet-loss environment. Regarding cost (Option D), RoCE v2 often leverages existing Ethernet infrastructure, making it generally more cost-effective than deploying a dedicated Fibre Channel (FC) fabric, which requires specialized HBAs and FC switches.


NEW QUESTION # 84
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