1. 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.

2. When the communication between MDC and OSD is interrupted or the OSD is faulty, the OSD exits the storage pool. Then the OSD out-of-service alarm is reported.
Which of the following are the possible causes of this fault? (Multiple Choice)

3. Based on full interconnection of data channels and communication channels, a clustered NAS system employs cluster volume management to manage storage space globally. All nodes in the cluster can access the same storage space using the same volume device name, ensuring block device access consistency.

4. A NAS storage system supports file system sharing, and the underlying protocol transmits data based on iSCSI.

5. Which of the following statements about multipart upload of object storage service are correct? (Multiple Choice)

6. Users of object storage service (compatible with OpenStack Swift APIs) are managed and authenticated by the Keystone server. Registering, creating, and deleting an account must also be performed on the Keystone server.

7. Which data protection levels can be configured for an OceanStor 9000 that consists of 10 nodes? (Multiple Choice)

8. The OceanStor 9000 allows the clients using different protocols to access the same directory or file simultaneously. For example, Windows clients (using the CIFS protocol), Linux clients (using the NFS protocol), and Mac OS X clients (using the CIFS protocol or NFS protocol).

9. Which network file sharing protocols are supported by a NAS storage system? (Multiple Choice)

10. In an OceanStor 9000, if the protection level is set to 4+2, three mirrors of metadata will be generated.

11. In Huawei OceanStor 9000, a file pool is a collection of files that have specific characteristics. A file pool policy defines rules for storing a file pool in a node pool.

12. Administrators can use DeviceManager to quickly complete the initial configuration of an OceanStor 9000, including: (Multiple Choice)

13. Compared with traditional RAID algorithms, the erasure code redundancy technology used by Huawei OceanStor 9000 provides higher reliability and more flexible redundancy policies.
Which of the following statements about the erasure code N+M principle is false?

14. In which scenario, Huawei OceanStor 9000 does not start load balancing?

15. A customer purchases nine OceanStor 9000 storage nodes. During the deployment planning, the customer requires that data integrity be not affected if any three disks in a storage node are faulty, and the overall storage space utilization be not lower than 80%.
Which of the following is the most proper redundancy ratio?

16. Which of the following statements about the cloud storage system are correct? (Multiple Choice)

17. Which authentication modes are not supported by the CIFS sharing function of Huawei OceanStor 9000? (Multiple Choice)

18. An OceanStor 9000 must be equipped with a minimum of three nodes that can vary in types.

19. Which authentication modes are supported by the NFS service of Huawei OceanStor 9000? (Multiple Choice)

20. Which of the following statements about metadata on Huawei OceanStor 9000 is false?