H13-622 : Huawei Certified Network Professional- Constructing Big Data Solution​ : Part 06

H13-622 : Huawei Certified Network Professional- Constructing Big Data Solution​ : Part 06

1. Which of the following statements about reading and writing an N8500 clustered NAS file system mirror and the best practices are correct? (Select three)

   • Equivalent to RAID 01, Mirrored-stripe is to perform file system mirroring based on striping, A mirror provides data redundancy, and data is distributed across multiple disks.
   • Mirror is equivalent to RAID 1, Data that needs to be written to a file system is simultaneously written to two mirrors and data is read from the two mirrors based on a round- robin policy (I/Os are evenly distributed to paths in a round-robin manner).
   • Regarding the use of Mirror, it is recommended that the space of the source file system be provided by one storage array and that of the mirrored file system be provided by another. Mirror is recommended for scenarios that require high reliability.
   • Mirrored-stripe is suitable for scenarios that require high reliability. The performance of Mirrored-stripe is the same as that of Mirror.

2. The figure shows the rear view of a P node in an OceanStor 9000. When its front-end is a 10GE network and its back-end is an IB network, NICs 0 on all nodes in the basic cabinet must be connected to the GE switches in the same cabinet.

   

   • True
   • False

3. Which data protection levels can be configured for an OceanStor 9000 that consists of 10 nodes? (Choose all that apply.)

   • RAID1
   • 6+3
   • 6+4
   • 6+5

4. When you are using the OceanStor Toolkit to deploy an OceanStor 9000 storage system, you must configure the front-end network mask, front-end network gateway, back-end network mask, back-end network gateway, management network mask, and management network gateway in the configuration file of the OceanStor Toolkit.

   • True
   • False

5. An N8500 clustered NAS system has many services that help implement system functions, such as NFS and CIFS basic service groups. Which of the following is not a resource agent of the NFS service group?

   • NIC
   • Hashadow
   • Disk
   • IP

6. When an engine node of an N8500 clustered NAS storage system needs to connect to multiple ports on a controller of a storage unit, ensure that ports on different interface modules are used.

   • True
   • False

7. Which of the following statements about the file sharing protocols of the OceanStor 9000 are correct? (Select three)

   • The OceanStor 9000 supports NFS and CIFS file sharing protocols.
   • The OceanStor 9000 is compatible with various operating systems, allowing file resource sharing in a heterogeneous network environment.
   • The sharing is by files.
   • The sharing service supports automatic load balancing.

8. You are required to check the installation environment before installing software on an OceanStor 9000 storage system. Which of the following conditions does not meet these requirements?

   • The OceanStor 9000 consists of three P nodes and one C node.
   • The storage nodes run SU5E Linux Enterprise Server 11 (x86_64) SP1.
   • The PC used for installation runs Windows 7.
   • The PC used for installation runs Internet Explorer 9.

9. Which of the following statements about the VxVM implementation mechanism employed by an N8500 are correct? (Select two)

   • The capacity of a physical disk and that of a virtual disk are the same.
   • A plex consists of virtual disks.
   • A volume consists of subdisks.
   • The capacity of a volume can be larger than the maximum capacity of a single physical disk.

10. Which of the following statements about the InfoTier feature of the OceanStor 9000 are correct? (Select two)

    • The InfoTier license must be purchased.
    • This feature can be used only when the storage system has different types of nodes.
    • This feature can be used when the storage system has different types of disks.
    • After this feature is enabled, you can set the high and low watermarks for a specified node pool.

11. If the file system sharing services are interrupted on an N8500 storage system, which of the following information must be collected for troubleshooting? (Select three)

    • Alarm information
    • Operations performed after the fault occurred
    • Clustered NAS configuration information
    • Number of storage unit disk enclosures

12. In an OceanStor 9000 storage system, the management IP address is 100.16.100.3, the front-end service network segment is from 192.168.100.1 to 192.168.100.20, the dir00l directory is shared, and the share path is /dir00l. Which of the following statements about the share access are correct? (Select two)

    • The clients that attempt to access the share must interwork with IP address 100.16.100.3.
    • The clients that attempt to access the share must interwork with any IP address in the network segment from 192.168.100.1 to 192.168.100.20.
    • If the client runs the 5U5E operating system, use the mount -t nfs ipaddress:\dir001 \mnt command to mount the share.
    • If the client runs the 5U5E operating system, use the mount -t nfs ipaddress:\dir001 \mnt command to mount the share.

13. When using the OceanStor Toolkit to deploy an OceanStor 9000 storage system, the IP addresses specified in IP address segment in the Configure DHCP area can only be use for the deployment. After the deployment is successful, the IP addresses of each node are changed to those as planned in the configuration file.

    • True
    • False

14. In an OceanStor 9000 storage system, the calculate quota is set to 50 GB for user A to access the /dir directory. When the amount of data that user A writes exceeds 50 GB in the /dir directory, the system allows user A to continue to write data in the /dir directory.

    • True
    • False

15. Which of the following interface cards can be installed in the PCIe expansion slot on the P node of the OceanStor 9000? (Select three)

    • 2-portTOE 10GE network adapter
    • 2-port IB network adapter
    • 2-port GE network adapter
    • 2-port 8 Gbit/s Fibre Channel interface card

16. Which of the following statements about the 10 Gigabit Ethernet (10GE) is incorrect?

    • 10GE, an Ethernet transmission standard, become IEEE Std 802.3ae-2002 in 2002.
    • 10GE enables an Ethernet to transmit data at a rate of 10 Gbit/s, 10 times the rate of GE.
    • 10GE defines full-duplex and half-duplex links which are generally connected by network switches.
    • 10GE implements access at a high bandwidth and low latency. 10GE is suitable for scenarios such as media & entertainment, high-performance computing, and OLAP.

17. If the InfoLink license is not activated in an OceanStor 9000 storage system, the system cannot balance loads coming from clients.

    • True
    • False

18. If an OceanStor 9000 storage system consists of three P nodes and uses GE for the front-end network, how many IP addresses must be planned for the front-end service network segment?

    • 17
    • 18
    • 19
    • 20

19. Which of the following statements about NewSQL databases are correct? (Select three)

    • MPP databases are not NewSQL databases.
    • NewSQLdatabases have the capability to store and manage massive data.
    • NewSQLdatabases support ACID and SQL as traditional databases do.
    • NewSQLindicates various new databases that provide scalability and high performance.

20. If the back-end storage performance of an N8500 storage system deteriorates, which of the following items can be skipped during troubleshooting?

    • Whether the sharing services are disabled
    • Whether the batteries on the storage units are faulty
    • Whether a link between the engine and a storage unit is down
    • Whether the storage system has slow disks