1. Which of the following statements about snapshots is correct?

2. During the processing of the IO stack of Huawei's distributed big data service, the computing component sends a request to the DataNode module through the hdfs client and returns the file metadata information.

3. An enterprise administrator created a shared folder on the root directory of the file system, and created 3 different Quota Trees under the root directory for Manager A (Quota Iree 1), Project Department B (Quota Tree 2) and Sales Department C (Quota Tree 3) for being used alone.
Which of the following statement is correct?

4. HyperCDP can generate more intensive recovery points for the data on the storage device. HyperCDP copy is a full copy backup of the source data at a certain point in time.

5. An enterprise needs to provide continuous data protection for its instant transaction business, so it has created a timed HyperCDP plan for the business data LUN. Which of the following configurations can shorten the RPO as much as possible?

6. Huawei's hyper-converged storage adopts the structure of distributed storage logic frame. Which of the following is the function of the MDC module?

7. About the Huawei's SamtMulti-Tenant technology, which of the following statement is incorrect?

8. Which of the following is the maintenance software supported by Huawei's hybrid flash storage products?

9. After Engineer C completes the installation of Huawei's distributed storage on site, he powers on for big data service configuration.
In the following description of the big data business configuration process, which of the options is in the correct order?
1. Create an account
2. Configure the subnet
3. Create a file system
4. Be associated File System
5. Create NameNode Zone
6. Create Global Zone

10. In Huawei distributed storage, SCSI volumes with multiple mount points are called shared volumes, and iSCSI volumes are shared volumes. In order to support the backup capability of shared volumes, the block service also supports snapshots of shared volumes, and the snapshot process of shared volumes is the same as that of ordinary volumes.

11. A company purchased multiple sets of Huawei distributed storage, deployed them in multiple data centers, and used object service remote replication to build a disaster recovery system. These distributed storages were planned in the same area, so this area has one and only one default cluster, other clusters are non-default clusters.

12. The QoS characteristics of the object service, for applications with different priorities, different buckets can be configured, and the TPS of the buckets and the allocation of bandwidth resources can be controlled through QoS; different QoS policies can be configured for VIP tenants and ordinary tenants in the same system to ensure the quality of service for high-priority tenants.

13. A company has a variety of services such as database applications, OLTP applications, mail service applications, and Web server applications. In which of the following service scenarios does the SmartCache feature not significantly improve performance?

14. The HyperLock (WORM) feature of Huawei Storage allows the file to write data only once, cannot be written repeatedly, and is not allowed to be modified, deleted, or renamed.

15. A multinational company has a huge business, with customer business data scattered in multiple locations, and the distance between locations is greater than 1000 km. The company hopes to centrally manage the backup data of each site, so that users can analyze and mine all data without affecting normal business, and any business site suffers a disaster, the company can take over the business and perform data recovery.
In this case, which disaster recovery backup solution the enterprise should choose?

16. Huawei hybrid flash storage adopts the structure of RAID 2.0+ software architecture, which realizes the virtualization of the underlying media and the virtualization of the upper-level resources, and at the same time solves the problem of rapid data reconstruction and intelligent allocation of resources.

17. A company purchased a set of Huawei distributed storage and used QoS flow control technology to control the user's I/O when deploying block services. Which mechanism can be used to manage the I/O queue?

18. Company A plans to adopt hyper-convergence to realize the rapidly changing information needs of the enterprise. Which of the following items are the architectural features of hyper-convergence?

19. Huawei's hyper-converged storage uses the structure of distributed storage logic. Which of the following is the function of the OSD module?

20. Huawei's converged storage has the function of parallel fast data reconstruction. Data fragments are broken up in the resource pool. After a hard disk fails, it can be automatically rebuilt in parallel within the full resource pool. Only the actual data is rebuilt without a separate hot spare disk.

21. In RAID2.0+ technology, what is the default size in MB of the CHUNK segmented from SAS hard disks?

22. LLD (Lom Level Desigm, detailed design) is based on the determined target network architecture, clearly designing the scope of the network and functional deployment plan; the specific design content was paid attention by the customers within the scope of the contract, including clarifying the interactive process of the important business, the function allocation of all services on each network element, the peripheral docking relationship of the design network element, the docking requirements and compliance with the norms, the quantitative calculation of docking resources.

23. In the Huawei HyerMetro active-active solution, when the active-active data center link fails, it will enter the "standby state". In order to quickly restore services, you can choose to force start the local storage system or the remote storage system to continue to provide services for the host. At this time, the active-active service status will enter "normal".

24. If the alarm indicator of the storage controller enclosure is yellow, it indicates that the storage system has a critical alarm.

25. In the special feature of Huawei OceanStr Hybrid Flash Storage SmartQuota, each time an I/O operation, the system will check the used capacity and the number of files of the quota, plus if the incremental capacity and files of this operation exceed the hard quota. If it is exceeded, the operation will fail, otherwise the operation will succeed.