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H13-723 Test Engine Practice Test Questions, Exam Dumps
NEW QUESTION 68
The rowkey design of HBase table is a very important development and design link.
Suppose there are the following scenarios. The most frequent query scenario is based on the mobile phone number to query the historical call records every month and every six months. Which of the following rowkey designs is the best?
- A. Mobile number + date
- B. Name + mobile phone number
- C. Mobile phone number + name
- D. Date + mobile phone number
Answer: A
NEW QUESTION 69
In HBase application development, when the Rowkey range and distribution of a table are known, it is recommended to pre-divide regions. After calling the following code (fragment) to pre-divide a table into regions, this table will create several regions.
//Create a table of pre-partitioned regions
byte[][] splits=new byte[4][];
splits[0] = Bytes.toBytes("A");
splits[1] = Bytes.toBytes("H");
splits[2] = Bytes.toBytes("O");
splits[3] = Bytes.toBytes("U");
admin.createTable (htd, splits);
- A. 0
- B. 1
- C. 2
- D. 3
Answer: C
NEW QUESTION 70
In FusionInsight HD, for the creation and read-write permissions of various resources in Solr, which of the following statements is wrong?
- A. Users of the Solr user group can create Collection
- B. Collection creator, role with read and write access to the collection, and Solr admin role can update the collection
- C. Solr user group users can create a configuration set and specify the configuration set when creating a Collection
- D. Only the collection creator and Solr admin roles can delete a collection
Answer: C
NEW QUESTION 71
When HDFS is running, the NameNode will load all the metadata of the file system from the disk to the memory. Therefore, the total number of files that the file system can store is limited by the memory capacity of the NameNode.
- A. True
- B. False
Answer: A
NEW QUESTION 72
In the FusionInsight HD system, with regard to the Hive JDBC interface type, which of the following descriptions is correct?
- A. Hive is different from traditional databases, so the connection established by JDBC does not need to be closed.
- B. In a secure cluster environment, before establishing a connection with Hive, you need to log in using a unified authentication method.
- C. In a network isolation environment, ZooKeeper's IP can be configured as either a service IP or a management IP.
- D. When using JDBC to submit SQL, you can add a semicolon ";" after the SQL statement.
Answer: B
NEW QUESTION 73
The calculation logic of the Spark application will be parsed into DNG. Which of the following functional modules will complete this parsing operation?
- A. Driver
- B. Application Master
- C. Client
- D. Executor
Answer: A
NEW QUESTION 74
In MapReduce application development, which of the following JAVA classes is responsible for managing and running a computing task?
- A. lob
- B. FileSystem
- C. Context
- D. Configuration
Answer: A
NEW QUESTION 75
Which of the following descriptions about the characteristics of Kafka is correct? (multiple choice)
- A. Kafka can achieve message persistence
- B. Kafka is suitable for offline and online message consumption scenarios
- C. Kafka can ensure that the messages in each Partition are in order
- D. Kafka is a high-throughput, distributed, publish-and-subscribe messaging system
Answer: A,B,C,D
NEW QUESTION 76
In FusionInsight HD, what are the data distribution methods belonging to Streaming? (multiple choice)
- A. Field Grouping
- B. Shuffle Grouping
- C. Local Grouping
- D. Direct Grouping
Answer: A,B,C,D
NEW QUESTION 77
In FusionInsigt HD, an application deployed on Tomcat needs to access the HBase service. In this scenario, it is recommended to use a machine-to-machine account.
- A. True
- B. False
Answer: A
NEW QUESTION 78
Which of the following options is the core function of Yarn?
- A. Storage
- B. Data transfer
- C. Search
- D. Resource management
Answer: D
NEW QUESTION 79
Regarding the file format provided by Hive in the FusionInsight HD system, which is not a columnar file?
- A. TextFiIe
- B. CRC
- C. Parquet
- D. RCFile
Answer: A
NEW QUESTION 80
In FusionInsight HD, Spark uses YARN as the cluster resource management system by default.
- A. True
- B. False
Answer: A
NEW QUESTION 81
In a MapReduce application, the output of the map function is processed by the MapReduce framework and sent to the reduce function. This process is based on key-value pairs for sorting and grouping.
- A. True
- B. False
Answer: A
NEW QUESTION 82
In Kafka, which of the following commands can check how many partitions a topic has?
- A. kafka-topics.sh - describe
- B. kafka-topics.sh --create
- C. kafka-topics.sh --list
- D. kafka-topics.sh --alter
Answer: A
NEW QUESTION 83
In FusionInsight HD, Oozie supports HDFS Action.
- A. True
- B. False
Answer: A
NEW QUESTION 84
In the Hive application of FusionInsight HD, there are scenarios where the data storage file has a high compression efficiency, and most queries only involve a part of the file field. This scenario is suitable for ORC File storage.
- A. True
- B. False
Answer: A
NEW QUESTION 85
In FusionInsight HD, use the Streaming command line to submit the om.huawei.examole.WordCount task in example.jar. The task name is wcTest. Which of the following commands is correct?
- A. storm jar example.jar WordCount wcTest
- B. storm jar example .jar wcTest WordCount
- C. storm jar example .jar wcTest om.huawei.example.WordCount
- D. storm jar example .jar om.huawei.example.WordCount wcTest
Answer: D
NEW QUESTION 86
In FusionInsight HD, about Hive and Sparksql, which of the following descriptions are correct? (multiple choice)
- A. Both can access data on HBase through the table field and HBase field mapping method
- B. Both can run on the Spark computing framework
- C. Both can provide SQL or SQL-like capabilities externally
- D. Both can run on the MapReduce computing framework
Answer: A,B,C
NEW QUESTION 87
Oozie's workflow.xml file is a workflow configuration file
- A. True
- B. False
Answer: A
NEW QUESTION 88
In FusionInsight HD, which method of the OozieClient class will be called by the JAVA API of the Oozie client when running tasks?
- A. suspend
- B. run
- C. submit
- D. getJobInfo
Answer: B
NEW QUESTION 89
In FusionInsight HD, if there are multiple sources in a Flume configuration file, the source names cannot be repeated.
- A. True
- B. False
Answer: A
NEW QUESTION 90
Regarding the characteristics of the data collected by Flume, which of the following descriptions is correct?
- A. Only structured data can be collected
- B. Use external timing tasks to trigger data collection
- C. Support distributed and streaming collection
- D. Parallel collection with MapReduce tasks
Answer: C
NEW QUESTION 91
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