Huawei H13-624 Online Practice Questions and Exam Preparation

Huawei H13-624 Online Questions & Answers

• Question 1:

  FILL IN THE BLANK The_____feature provided by the OceanStor Pacific series storage system supports OPS and bandwidth upper limit control based on namespaces, accounts, and client IP addresses.

  traffic qos

  Explanation:

• Question 2:

  FILL IN THE BLANK Huawei flash storage supports_____. That is, the existing storage system can be used to meet customers' Increasing requirements by continuously adding storage components.

  scale-out scale-up

  Explanation:

• Question 3:

  FILL IN THE BLANK The _______ uses Huawei's optimized FlexFC algorithm. This algorithm allows the system to tolerate simultaneous failures of three disks, greatly shortening the reconstruction time and effectively addressing data protection challenges in the large-capacity disk era.

  Flexec

  Explanation:

• Question 4:

  FILL IN THE BLANK In Huawei all flash storage, the_____feature can automatically store data in different locations based on specified rules for intelligent data management.

  smarttier

  Explanation:

• Question 5:

  FILL IN THE BLANK The LUN active-active balancing feature of Huawei all-flash storage integrates global load balancing. The front-end interface module evenly distributes I/Os to the target controllers to achieve balanced workload distribution.

  Global cache

  Explanation:

• Question 6:

  When deploying a Huawei converged storage system, engineer A uses the UltraPath software. Which of the following statements are false about the load balancing algorithms of UltraPath?

  A. The min-queue-depth algorithm refers to the minimum queue depth algorithm. UltraPath is configured with this algorithm by default.
  B. Round robin is a min-task algorithm and can be used in scenarios where service I/O model data blocks delivered by the host are large.
  C. The min-task algorithm is a round robin algorithm and can be used in scenarios where the service I/O models delivered by the host have little difference.
  D. The algorithms fall into three types: min-queue-depth, round-robin, and min-task.
  B. Round robin is a min-task algorithm and can be used in scenarios where service I/O model data blocks delivered by the host are large.
  C. The min-task algorithm is a round robin algorithm and can be used in scenarios where the service I/O models delivered by the host have little difference.

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  explanation:

  Option A is correct because UltraPath indeed uses the min-queue-depth algorithm as its default load-balancing method. This algorithm selects the path with the smallest queue depth, ensuring efficient path utilization.

  Option D is also correct because UltraPath provides exactly three load-balancing algorithms: min-queue-depth, round-robin, and min-task.

  Option B is incorrect because round robin is not a min-task algorithm. Round robin simply distributes I/O requests evenly across paths without considering task depth or queue load. It is not specifically designed for scenarios where large data blocks are delivered by the host. It is more suitable when I/O sizes are relatively consistent. Option C is incorrect because the min-task algorithm is not a round-robin algorithm. Min-task dynamically selects the path with the fewest outstanding tasks, while round robin is a

  static rotation mechanism that does not consider current load. Therefore, describing min-task as round robin and associating it with similar I/O models is inaccurate.

• Question 7:

  Routine management on Huawei flash storage systems involves power-on and power-off. Which of the following statements is false about power-on and power-off?

  A. Before powering on the storage system, you need to ensure that all expansion cables are correctly connected. The storage system may work improperly if the connection mode of expansion cables is adjusted after the storage system is powered on.
  B. If none of the controller enclosures in the cluster are powered on, you can log in to the BMC system using the external management IP address of the BMC and run the power-on command to power on all the controller enclosures.
  C. To power on the storage system after an emergency power-off, you need to press the power button on the controller enclosure.
  D. For Huawei OceanStor Dorado 8000 storage, after a controller enclosure is powered on, its cascaded disk enclosures will be automatically powered on.
  C. To power on the storage system after an emergency power-off, you need to press the power button on the controller enclosure.

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  explanation:

  The *HCIP-Storage V5.5 Training Material (Module 5: Storage System Maintenance and Troubleshooting)* covers power management:

  Option A: True. "Correct expansion cable connections are required before power-on to ensure proper operation."

  Option B: True. "The BMC system allows powering on controller enclosures via the external management IP when none are powered on."

  Option C: False. "After an emergency power-off, the storage system is powered on via DeviceManager, CLI, or BMC, not by pressing the controller enclosure's power button, which is used for normal power-on."

  Option D: True. "In OceanStor Dorado 8000, powering on a controller enclosure automatically powers on cascaded disk enclosures."

  HCIP-Storage V5.5 Training Material, Module 5: Storage System Maintenance and Troubleshooting, Section 5.24: Power Management Procedures*, Huawei Technologies Co., Ltd.

• Question 8:

  An engineer wants to configure the iSCSI block service on a Huawei scale-out storage device. Which of the following operations must be performed by the engineer?

  A. Create a block storage pool.
  B. Configure the iSCSI service.
  C. Configure DPC share access on a client.
  D. Install DPC.
  A. Create a block storage pool.
  B. Configure the iSCSI service.

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  explanation:

  Configuring iSCSI block services on Huawei scale-out storage, like OceanStor Pacific, involves specific steps. The *HCIP-Storage V5.5 Training Material (Module 4: Storage Design and Implementation)* states: "To enable iSCSI block services, the engineer must create a block storage pool to allocate storage resources and configure the iSCSI service to set up initiator-target relationships and network parameters." Let's evaluate:

  Option A: Required. A block storage pool is necessary to provide the capacity for iSCSI LUNs.

  Option B: Required. Configuring the iSCSI service is essential to enable the protocol and connectivity.

  Option C: Not required. DPC is used for file services, not iSCSI block services.

  Option D: Not required. DPC installation is unrelated to iSCSI configuration.

  HCIP-Storage V5.5 Training Material, Module 4: Storage Design and Implementation, Section 4.6: iSCSI Block Service Configuration*, Huawei Technologies Co., Ltd.

• Question 9:

  Which of the following statements are false about direct TCP offload engine (DTOE) 1.0?

  A. This technology requires CPU to process each MAC frame, which will consume a large number of CPU resources.
  B. This technology allows to directly operate the hardware queue in the user mode, avoiding the context switching overhead.
  C. This technology uses the polling mode, reducing the latency.
  D. High latency overhead still exists using the technology, such as kernel mode interrupts, locks, system calls, and thread switching.
  A. This technology requires CPU to process each MAC frame, which will consume a large number of CPU resources.
  D. High latency overhead still exists using the technology, such as kernel mode interrupts, locks, system calls, and thread switching.

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  explanation:

  The Direct TCP Offload Engine (DTOE) 1.0 is a performance optimization feature in Huawei flash storage systems. The *HCIP-Storage V5.5 Training Material (Module 2: Flash Storage Technologies)* explains:

  "DTOE 1.0 offloads TCP processing from the CPU to dedicated hardware, reducing CPU resource consumption and latency. It operates in user mode to manage hardware queues, avoiding context switching overhead, and uses polling mode to minimize interrupt latency. Unlike traditional TCP processing, DTOE eliminates kernel mode interrupts, locks, system calls, and thread switching." Let's evaluate:

  Option A: False. DTOE offloads MAC frame processing to hardware, not the CPU, reducing CPU resource usage.

  Option B: True. The material confirms that DTOE operates in user mode, avoiding context switching.

  Option C: True. Polling mode is used to reduce latency, as stated in the material.

  Option D: False. DTOE eliminates kernel mode overheads like interrupts and system calls, contrary to the statement.

  HCIP-Storage V5.5 Training Material, Module 2: Flash Storage Technologies, Section 2.7: Network Optimization with DTOE*, Huawei Technologies Co., Ltd.

• Question 10:

  During the use of Huawei flash storage, an engineer wants to calculate the valid write bandwidth of disks. Which of the following formulas can calculate disk valid write bandwidth?

  A. Valid read bandwidth of disks = Read bandwidth of a single disk x Number of disks x (Number of system disks / Total number of disks)
  B. Valid write bandwidth of disks = Write bandwidth of a single disk x Number of disks
  C. Valid write bandwidth of disks = Write bandwidth of a single disk x Number of disks x (Number of data disks / Total number of disks)
  D. Valid write bandwidth of disks = Bandwidth of a single port x Number of ports
  C. Valid write bandwidth of disks = Write bandwidth of a single disk x Number of disks x (Number of data disks / Total number of disks)

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  explanation:

  The valid write bandwidth calculation for Huawei flash storage accounts for data disks in a RAID configuration. The *HCIP-Storage V5.5 Training Material (Module 5: Storage System Maintenance and Troubleshooting)* explains: "The valid write bandwidth of disks is calculated as the write bandwidth of a single disk multiplied by the number of disks, adjusted by the ratio of data disks to total disks to account for RAID overhead (e.g., parity disks). The formula is: Valid write bandwidth = Write bandwidth of a

  single disk ?Number of disks ?(Number of data disks / Total number of disks)." Let's evaluate:

  Option A: Incorrect. This formula is for read bandwidth and uses system disks, not data disks.

  Option B: Incorrect. It does not account for RAID overhead, which reduces effective bandwidth.

  Option C: Correct. Matches the documented formula for valid write bandwidth.

  Option D: Incorrect. Port bandwidth is unrelated to disk write bandwidth calculations.

  HCIP-Storage V5.5 Training Material, Module 5: Storage System Maintenance and Troubleshooting, Section 5.12: Disk Bandwidth Calculations*, Huawei Technologies Co., Ltd.