H13-622 : Huawei Certified Network Professional- Constructing Big Data Solution​ : Part 09

H13-622 : Huawei Certified Network Professional- Constructing Big Data Solution​ : Part 09

  1. Which are the characteristics of the OceanStor 9000 M node? (Select two.)

    • 2U
    • Up to 12 service disk slots
    • Applicable to scenarios requiring large capacity
    • Standard configuration:2 x 6-core CPUs

  2. In the cluster communication architecture employed by an NS500 clustered NAS system, modules such as the resource agent, HAD, GAB, and Low Latency Transport (LLT) must collaborate to implement cluster communication. Which of the following statements about the work mechanisms of these modules are correct? (Select three)

    • The agent monitors the resources of each system and provides the status information for the HAD of each machine.
    • If a cluster node is abnormal or faulty, the HAD takes correct actions, for example, performing a failover.
    • The GAB implements a point-to-point communication mechanism. The master node sends the other cluster nodes the information that needs to be synchronized.
    • LLT is a MAC-layer protocol unrelated to IP layer.

  3. Which of the following statements about the characteristics of the file system snapshot feature provided by an N8500 clustered NAS system are incorrect? (Select two.)

    • A snapshot and the file system each use independent storage space to ensure data reliability.
    • A file system snapshot is a view identical with the file system.
    • File system snapshots are readable, writable, and independent of the file system.
    • You can create multiple snapshots for a file system. However, you cannot create a snapshot for an existing snapshot.

  4. Which of the following statements about the Global Cache technology employed by the WushanFS are correct? (Select three.)

    • Global Cache enables the memory space on all storage servers to form a unified memory resources pool logically.
    • Data cached on a node cannot be hit by the read/write service of another node.
    • Global Cache helps improve the sharing of memory resources among nodes.
    • The WushanFS uses the distributed lock mechanism to implement global management of cached data. The same service data is cached only on one node. Another node that needs to access the service data can apply for a lock to obtain the cached data.

  5. If the internal link is faulty in an N8500 clustered NAS storage system, which of the following items can be skipped during troubleshooting?

    • The heartbeat network between engines
    • The network between an engine and a disk enclosure
    • The Fibre Channel network between an engine and a storage unit
    • The network between a storage unit controller enclosure and a storage unit disk enclosure

  6. An N8500 clustered NAS system is equipped with six engine nodes and four S5500T storage arrays. Each engine node provides eight service network ports. How many IP addresses must be configured for the N8500?

    • 103
    • 104
    • 105
    • 106

  7. Which command is used to check whether the file system is in the online state for N8500 V200R001?

    • storage fs list
    • storage fs online
    • storage fs status
    • storage fs status show

  8. A customer has purchased an N8500 clustered NAS storage system configured with ten 1 TB SAS disks and twelve 1 TB NL-SAS disks. Two RAID groups are planned. RAID group 1 is a RAID 5 consisting of nine SAS disks. RAID group 2 is a RAID 6 consisting of 11 NL-SAS disks. Two global hot spare disks are configured. What is the available capacity of the storage system?

    • 20 TB
    • 14 TB
    • 15.6 TB
    • 18.4 TB

  9. The InfoLink function is enabled on an OceanStor 9000 storage system. If the node to which a client connects becomes faulty and a failover occurs, which of the following statements is incorrect?

    • If the client accesses a shared directory through CIFS, the failover will cause disconnection and the client will need to reconnect to the storage system.
    • If the client accesses a shared directory through NFS V4, the failover will cause disconnection and the client will need to reconnect to the storage system.
    • If the client accesses a shared directory through NFS V4, the failover will not affect the connection.
    • If the client accesses a shared directory through NFS V3, the failover will not affect the connection.

  10. The mirrored-stripe file system of the N8500 clustered NAS storage systems is ideal for scenarios that require high data security and read/write performance. Which of the following is the major technical feature of the mirrored-stripe file system?

    • Data is striped and then mirrored, as in RAID 01.
    • Data is mirrored and then striped, as in RAID 10.
    • Data is stored in sequence on data disks that compose the file system.
    • Data is stored in an interlaced manner on multiple data disks that compose the file system.

  11. If an application server cannot access the storage resources of an N8500 storage system, which of the following operations can be performed for troubleshooting? (Select three.)

    • Log in to the ISM to check alarms.
    • Check the indicators on the storage system.
    • Reinstall the ISM software.
    • Restart the sharing service.

  12. Which of the following technologies is not suitable for the challenges brought by big data?

    • FCSAN
    • Object Storage
    • Cluster
    • 10GE or infiniband

  13. Which of the following are necessary components of the NAS storage system architecture? (Select three.)

    • Accessible storage array
    • File system
    • Interface provided for other devices to access the file system
    • Fibre Channel switch

  14. In a NetBackup-based N8500 file system backup network, all the nodes of the N8500 must be connected to both the NetBackup master server and media servers.

    • True
    • False

  15. Which of the following is the correct sequence for powering on an OceanStor storage system?

    • Connect the cabinet to the external power supply. -> Connect the PDUs to the external power supply. -> Power on the storage nodes. -> Power on the switches. -> Power on the KVM. -> Power on the SMS modem.
    • Connect the cabinet to the external power supply. -> Connect the PDUs to the external power supply. -> Power on the switches. -> Power on the KVM. -> Power on the storage nodes. -> Power on the SMS modem.
    • Connect the cabinet to the external power supply. -> Connect the PDUs to the external power supply. -> Power on the KVM. -> Power on the storage nodes. -> Power on the switches. -> Power on the SMS modem.
    • Connect the cabinet to the external power supply. -> Connect the PDUs to the external power supply. -> Power on the KVM. -> Power on the storage nodes. -> Power on the SMS modem. -> Power on the switches.

  16. Which of the following statements about the indicators on an N8500 clustered NAS system are correct? (Select two.)

    • A power module runs properly if its indicator is steady red.
    • The system is being started if the power indicator on the NAS service module blinks green.
    • The data transmission rate is 4 Gbit/s if the port indicator on the NAS service 10GE interface card is steady blue.
    • Data is being transmitted if the Active indicator of the management network port blinks orange.

  17. Which of the following statements about the simple file system of the N8500 clustered NAS storage systems is incorrect?

    • Data of a simple file system is stored in sequence on the data disks where the file system resides.
    • A simple file system reads and writes multiple subdisks simultaneously, providing higher performance than reading and writing a single disk.
    • The volume of a simple file system is formed by the subdisks of multiple data disks.
    • The simple file system is applicable to scenarios having no special performance or security requirements.

  18. The N8500 clustered NAS storage system supports bonding of multiple service network ports.Which of the following statements about bond4 and bond6 are correct? (Select three)

    • The bond4 mode has unbalanced load issues in the “gatewayed” topology.
    • The bond6mode allocates and adjusts loads based on the workloads on the bond ports.
    • The bond6 mode supports fault tolerance whereas the bond4 mode does not.
    • The adaptive load balancing supported by the bond6 mode will definitely cause frequent switchovers among network adapters, increasing the system overhead.

  19. A client served by an OceanStor 9000 requires that if one channel fails, data can be transmitted over another channel without service interruption. To address this requirement, a necessary condition is that the client support SMB 3.0.

    • TRUE
    • FALSE

  20. When the communication between MDC and OSD is interrupted or the OSD is faulty, the OSD exists the storage pool. Then the OSD out-of-service alarm is reported.

    Which of the following are the possible cause of this fault? (Choose all that apply.)

    • A storage network exception occurs.
    • The disk in the server that houses the OSD is faulty.
    • The NVDIMM in the server that houses the OSD is faulty.
    • The OSD software is abnormal.
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