1. Which one of the following commands can be used to clear the data of all databases under the Redis instance?

2. How many fragments does an index library of ElasticSearch have by default?

3. Which one of the following factors have contributed to the vigorous development of the big data era?

4. Which of the following descriptions of Hive features are incorrect?

5. When the Loader of MRS creates a job, what is the role of the connector?

6. Which way does ElasticSearch index data use?

7. Which one of the following descriptions of the characteristics of big data and traditional databases are incorrect?

8. In Fusioninsight products, about Kafka Topic, which of the following descriptions are incorrect?

9. Which of the following are the characteristics of Huawei Kunpeng processor?

10. In the MRS cluster, which of the following components does Spark mainly interact with?

11. Assuming that the data volume is about 200GB and the maximum fragment capacity is limited to 30GB, what is the appropriate design for the maximum number of fragments?

12. If it is necessary for the data producer to determine the data sent to a certain task of the target Bolt, which of the following message publishing strategies should be selected?

13. When installing the Streaming component of Fusionlnsight HD, how many nodes are required to install by the Nimbus role?

14. Which of the following are not part of the core elements of KrbServer?

15. Which of the following scenarios are not what Flink components good at?

16. Which command in Redis is to view the remaining lifetime of the key?

17. In the MRS platform, which component does the Flume data flow not need to pass through in the node?

18. Which one of the following is not a state store supported by Flink?

19. What component does HBase use by default as its underlying file storage system?

20. Which one of the following is not a role or service involved in the HBase read data process?

21. What physical resources does Redis consume mainly?

22. If you want to add 1 to the digital value stored in the Key, which command should be used?

23. Now server.channels=ch1 is available, set the Channel type to File Channel, which of the following configurations are correct?

24. What is the default resource scheduler for queues in YARN?

25. Which one of the following is a node of ElasticSearch?