[Jan-2022] Huawei H13-723 Dumps – Reduce Your Chance of Failure in H13-723 Exam
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NEW QUESTION 61
In the FusionInsight HD system, in the Solr example project solr-example\conf\solr-example.properties, the values of ZK_URL and ZOOKEEPER_DEFAULT_SERVER_PRINCIPAL can be obtained from which of the following options?
- A. In solr-example\conf\solr-example.properties, these two parameters are already included by default
- B. Obtain from the Solr Admin UI interface
- C. Obtained from the FusionInsight Manager Solr service configuration interface
Answer: B
NEW QUESTION 62
When creating a user through the FusionInsight manager interface, if you want the user to have read and write permissions for all topics, but do not have the permission to create topics, which group of Kafka service should be added?
- A. Kafka group
- B. Kafkasuperuser group
- C. Kafkaadmin group
Answer: B
NEW QUESTION 63
In the HBase table design, for multiple businesses sharing the rowkey, which leads to data access contradictions, what strategies can be used to deal with it?
- A. Redundancy method (use space for time plant efficiency)
- B. Create a secondary index
- C. Pre-division region
- D. Compromise method (rowkey design takes into account the business needs of A and B)
Answer: A,B,D
NEW QUESTION 64
In FusionInsight HD, which parts of a complete Streaming CQL application include at least? (multiple choice)
- A. Business operation statements (such as SELECT, INSERT, JION, etc.)
- B. Create an input stream
- C. Create an output stream
- D. Application submission statement
Answer: A,B,C,D
NEW QUESTION 65
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 66
What are the several parameter setting methods for Spark applications? (multiple choices)
- A. In the application code, set by the setProperty method of SparkContext
- B. In the application code, set through the SparkConf object
- C. Configure in the application configuration file spark-defaults.conf
- D. When submitting the application, set it through --conf
Answer: B,C,D
NEW QUESTION 67
Which of the following measures can improve the query performance of HBase? (multiple choice)
- A. Query frequent attributes are placed in front of rowkey
- B. The data read at the same time are stored in the same cell
- C. Use secondary indexes to adapt to more query scenarios
- D. Pre-divide regions to make regions evenly distributed and improve concurrency
Answer: A,B,C,D
NEW QUESTION 68
In MapReduce application development, which of the following JAVA classes is responsible for managing and running a computing task?
- A. FileSystem
- B. Context
- C. Configuration
- D. lob
Answer: D
NEW QUESTION 69
Regarding Redis cluster topology information, which of the following descriptions is correct?
- A. Both
- B. The server caches the cluster topology information
- C. The client caches the cluster topology information
- D. Neither
Answer: A
NEW QUESTION 70
Regarding the disaster tolerance of Streaming, which of the following statements is correct? (multiple choice)
- A. After the Supervisor process exits, it can be automatically recognized and pulled up by Nimbus without affecting the running business.
- B. When a node fails, tasks on that node will be reassigned to other normal nodes without manual intervention.
- C. After Nimbus fails, the standby Nimbus will automatically take over, without affecting the running business.
- D. Worker can be automatically pulled up by Supervisor after abnormal exit without manual intervention.
Answer: A,B,C,D
NEW QUESTION 71
Which of the following is correct about the HDFS client's file reading process? (multiple choice)
- A. The file data is first returned from the DataNode to the NameNode, and then sent from the NameNode to the client.
- B. Support multiple clients to read the same file data from the DataNode at the same time.
- C. Download data from the nearest DataNode first.
- D. If the client and the connected DataNode fail during reading, the client will abandon the failed node and connect to the node where the other replica is located.
Answer: B,C,D
NEW QUESTION 72
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 om.huawei.example.WordCount wcTest
- C. storm jar example .jar wcTest WordCount
- D. storm jar example .jar wcTest om.huawei.example.WordCount
Answer: B
NEW QUESTION 73
Suppose there is an application, there are 10 tables, each table has tens of millions of records, and the number of fields is about 20.
Now Redis is used to cache the data of these 10 tables. For the design of the data structure, which of the following is the best design?
- A. A hash structure is adopted, and a table uses a hash KEY, and a row in the table records a field for the hash KEY.
- B. Using string structure, each row of each table uses a KEY, and value is the concatenated value of all the fields in a row of the table.
- C. Using a hash structure, each row record of each table uses a hash KEY, the field of the hash KEY corresponds to the field of the table record, and each table is designed with a different prefix to distinguish it.
- D. Using string structure, each field in each row of each table uses a KEY.
Answer: C
NEW QUESTION 74
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. submit
- C. getJobInfo
- D. run
Answer: D
NEW QUESTION 75
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. False
- B. True
Answer: B
NEW QUESTION 76
In a FusionInsight HD cluster, Flume does not support writing collected data to which service in the cluster?
- A. HBase
- B. Redis
- C. HDFS
- D. Kafka
Answer: B
NEW QUESTION 77
In Spark, assuming that lines is a DStream object, the filter statement can filter out 80% of the data. Which statement is correct for the following two statements:
X: lines.filter(...).groupByKey(...)
Y: lines.groupByKey(...).filter(...)
- A. It is impossible to determine the performance difference between X and Y
- B. X has higher performance than Y
- C. X has lower performance than Y
- D. X and Y have the same performance
Answer: B
NEW QUESTION 78
Regarding the characteristics of Redis, which of the following descriptions is correct? (multiple choice)
- A. Support SQL query interface
- B. Support data persistence
- C. Low latency
- D. Rich data structure
Answer: B,C,D
NEW QUESTION 79
In Spark, the accumulator can realize high-speed parallel counter and variable summation; in the process of Spark application development, only the value of this counter can be obtained on the Driver.
- A. False
- B. True
Answer: B
NEW QUESTION 80
For Spark Streaming applications, in a JVM, only one StreamingContext can be active at the same time.
- A. False
- B. True
Answer: B
NEW QUESTION 81
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