Huawei H13-624 Online Practice Questions and Exam Preparation

Huawei H13-624 Online Questions & Answers

• Question 81:

  In Huawei storage, which operation is allowed for an online disk replacement scenario?

  A. Removing a disk without following SmartKit instructions.
  B. Replacing a disk even when its RAID group is degraded below redundancy.
  C. Replacing disks one by one while ensuring adequate redundancy.
  D. Removing multiple disks simultaneously to speed up maintenance.
  C. Replacing disks one by one while ensuring adequate redundancy.

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  Explanation

  Disks must be replaced sequentially with redundancy preserved to avoid data loss.

• Question 82:

  Which of the following statements are false about the distributed parallel dlent (DPC) of Huawei scale-out storage products?

  A. If you want to reserve resources for deploying DPC, the available memory of compute nodes must be greater than or equal to 8 GB, and the memory reserved for the operating system must be greater than or equal to 4 GB.
  B. To enable the performance mode of CPUs, you can run the "cpupower frequency-set -g performance" command.
  C. If services running on DPC require higher performance, you can set CPUs to work in performance mode.
  D. DPC and non-uniform memory access (NUMA) are mutually exclusive. Therefore, the NUMA affinity tuning feature cannot be provided in actual scenarios.
  D. DPC and non-uniform memory access (NUMA) are mutually exclusive. Therefore, the NUMA affinity tuning feature cannot be provided in actual scenarios.

• Question 83:

  A school has purchased two Huawei OceanStor Pacific series storage devices for service deployment. An engineer wants to configure the distributed parallel client (DPC) on the storage devices. Which of the following statements is false about the engineer's configuration?

  A. If upper-layer services require high data security, the engineer needs to set the storage pool type to "Self-encrypting" when creating a converged storage pool.
  B. Before creating a converged storage pool, the engineer must enable the file service for nodes on DeviceManager.
  C. When creating a namespace, the engineer needs to select a security style and application type.
  D. When the storage network is a Remote Direct Memory Access over Converged Ethernet (RoCE) network, the engineer can run the "systemctl stop lldpad.service" command to disable the lldpad service.
  D. When the storage network is a Remote Direct Memory Access over Converged Ethernet (RoCE) network, the engineer can run the "systemctl stop lldpad.service" command to disable the lldpad service.

• Question 84:

  In Huawei flash storage, which statement about write cache behavior is false?

  A. Write-back cache improves write latency.
  B. Write-through cache writes data to disks before acknowledging the host.
  C. Write-back cache relies on BBU/CBU protection to ensure data reliability.
  D. Write-back cache is disabled automatically when disk utilization exceeds 80%.
  D. Write-back cache is disabled automatically when disk utilization exceeds 80%.

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  Explanation

  Write-back cache is disabled only when controller cache protection becomes unavailable (e.g., BBU fault). Disk utilization does not disable write-back.

• Question 85:

  In Huawei container storage solution, CSI is short for Container Storage Interface. Which of the following statements is false about Huawei CSI?

  A. CSI Driver developed by Huawei is mainly used to implement the call initiated by sidecar on Huawei storage.
  B. Huawei storage and Huawei CSI driver need to communicate with each other through RESTful to provide NAS/SAN storage resources.
  C. CSI Controller runs independently on a worker node on the Pod in StatefulSet mode and is used to interact with the storage and create and delete resources on the storage side.
  D. CSI Node runs on each worker node of Kubernetes on the Pod in DaemonSet mode and can be used to mount and unmount related storage resources.
  B. Huawei storage and Huawei CSI driver need to communicate with each other through RESTful to provide NAS/SAN storage resources.

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  The Container Storage Interface (CSI) in Huawei's container storage solution integrates with Kubernetes. The *HCIP-Storage V5.5 Training Material (Module 5: Storage System Maintenance and Troubleshooting)* explains:

  Option A: True. The material states: "The Huawei CSI Driver handles calls initiated by sidecar containers to manage storage operations."

  Option B: False. The material clarifies: "The Huawei CSI Driver communicates with Huawei storage using gRPC or proprietary protocols, not RESTful APIs, to provision and manage NAS/SAN resources." This makes the statement incorrect.

  Option C: True. The material confirms: "The CSI Controller runs in StatefulSet mode on a worker node, managing storage resource creation and deletion."

  Option D: True. The material notes: "The CSI Node runs in DaemonSet mode on each Kubernetes worker node, handling mount and unmount operations."

  HCIP-Storage V5.5 Training Material, Module 5: Storage System Maintenance and Troubleshooting, Section 5.3: Container Storage Integration with CSI*, Huawei Technologies Co., Ltd.

• Question 86:

  In Huawei flash storage, the integrated I/O stack of SAN and NAS can be divided into the storage pool layer, space management layer, and data service layer. Which of the following are performance concerns of the space management layer?

  A. Cache hit ratio of hot metadata
  B. CPU usage of metadata background management
  C. Whether failover is enabled for protocol receiving threads
  D. Hit ratio of the prefetch algorithm
  A. Cache hit ratio of hot metadata
  B. CPU usage of metadata background management

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  The integrated I/O stack in Huawei flash storage systems, such as OceanStor Dorado, is divided into layers, with the space management layer handling metadata and resource allocation. The *HCIP-Storage V5.5 Training Material (Module 5: Storage System Maintenance and Troubleshooting)* states: "The space management layer is responsible for metadata operations and space allocation. Key performance concerns include the cache hit ratio of hot metadata, which affects access speed, and CPU usage

  for background metadata management tasks, which impacts system efficiency." Let's evaluate:

  Option A: Correct. The material confirms that the cache hit ratio for hot metadata is critical for reducing latency in the space management layer.

  Option B: Correct. High CPU usage in metadata management can bottleneck performance, as noted in the material.

  Option C: Incorrect. Failover for protocol receiving threads is a concern for the data service layer, not the space management layer.

  Option D: Incorrect. The prefetch algorithm's hit ratio is relevant to the data service layer, not space management.

  HCIP-Storage V5.5 Training Material, Module 5: Storage System Maintenance and Troubleshooting, Section 5.11: I/O Stack and Performance Analysis*, Huawei Technologies Co., Ltd.

• Question 87:

  When deploying S3 object services on OceanStor Pacific, which statement about bucket policies is true?

  A. Bucket policies control access permissions for users and applications.
  B. Bucket policies require enabling CIFS service first.
  C. Bucket policies apply only to metadata, not object data.
  D. Bucket policies must be configured on each OSD manually.
  A. Bucket policies control access permissions for users and applications.

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  Explanation

  Bucket policies define fine-grained access control for S3 buckets and objects, supporting flexible permission management.

• Question 88:

  During flash storage initialization, an administrator needs to change the IP address of a management network port. Which statements about the change are false?

  A. To change the IP address of the management network port on the CLI, log in to the CLI and run the "change system management_ip" command.
  B. The IP addresses of the management and maintenance network ports must be in different network segments; otherwise, there will be a route conflict.
  C. The administrator needs to apply for and activate a license before changing the IP address of the management network port.
  D. To change the IP address of the management network port on the command-line interface (CLI), the IP address of the maintenance terminal and the default IP address of the storage management network port must be in the same network segment if the administrator logs in to the system through a serial port.
  A. To change the IP address of the management network port on the CLI, log in to the CLI and run the "change system management_ip" command.
  C. The administrator needs to apply for and activate a license before changing the IP address of the management network port.

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  Changing the management network port IP in Huawei flash storage systems is a common initialization task. The *HCIP-Storage V5.5 Training Material (Module 5: Storage System Maintenance and Troubleshooting)* states:

  Option A: False. "The CLI command to change the management IP is `change system management_ip_address,' not `change system management_ip.'"

  Option B: True. "Management and maintenance network ports must use different network segments to avoid routing conflicts."

  Option C: False. "No license is required to change the management network port IP address; it is a basic configuration task."

  Option D: True. "For serial port login, the maintenance terminal's IP and the default management IP must be in the same segment to establish connectivity."

  HCIP-Storage V5.5 Training Material, Module 5: Storage System Maintenance and Troubleshooting, Section 5.4: Network Configuration and Initialization*, Huawei Technologies Co., Ltd.

• Question 89:

  In Huawei backup storage OceanProtect X3000, data reduction supports fixed-length (^duplication by default, but does not support variable-length (^duplication. Therefore, fixed-length ded11plication Is mainly used in the backup field.

  A. TRUE
  B. FALSE
  A. TRUE

• Question 90:

  Similar to the alarm analysis method, the replacement method can be used to locate and rectify any type of faults for Huawei converged storage, and has no special requirement for maintenance personnel.

  A. TRUE
  B. FALSE
  B. FALSE

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  The *HCIP-Storage V5.5 Training Material (Module 5: Storage System Maintenance and Troubleshooting)* discusses fault rectification: "The replacement method, which involves swapping components to identify faults, is effective for hardware issues but not suitable for all fault types (e.g., software or configuration errors). It requires trained maintenance personnel with knowledge of system architecture and safety procedures to avoid service disruptions." The statement that it can address any fault type and

  has no special personnel requirements is false, as the method is limited and demands expertise.

  HCIP-Storage V5.5 Training Material, Module 5: Storage System Maintenance and Troubleshooting, Section 5.27: Fault Rectification Methods*, Huawei Technologies Co., Ltd.