Huawei H13-723 Practice Verified Answers - Pass Your Exams For Sure! [2021]
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NEW QUESTION 47
Which of the following table types does Hive support? (multiple choice)
- A. Bucket table
- B. Tilt table
- C. Partition + bucket table
- D. Partition table
Answer: A,B,C,D
NEW QUESTION 48
In FusionInsight HD, regarding the secondary development of Hive UDF, which of the following descriptions is correct? (multiple choice)
- A. User-defined UDF is not allowed to add information such as summary and status.
- B. In a secure cluster, user-defined UDFs are recommended to be created before each use.
- C. Before the user-defined UDF is used, it needs to be created in the Hive system.
- D. User-defined UDF can add deterministic and statefull annotations according to the actual situation.
Answer: C,D
NEW QUESTION 49
When the HBase application is running, the application can write data while creating a table.
- A. False
- B. True
Answer: A
NEW QUESTION 50
In the V100R002C60 version of the FusionInsight HD system, Hive only supports query services based on the MapReduce engine, and does not support query services based on the Spark engine.
- A. False
- B. True
Answer: A
NEW QUESTION 51
Regarding the file format provided by Hive in the FusionInsight HD system, which is not a columnar file?
- A. CRC
- B. RCFile
- C. TextFiIe
- D. Parquet
Answer: C
NEW QUESTION 52
In FusionInsight HD, Spark uses YARN as the cluster resource management system by default.
- A. False
- B. True
Answer: B
NEW QUESTION 53
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 phone number + name
- B. Date + mobile phone number
- C. Mobile number + date
- D. Name + mobile phone number
Answer: C
NEW QUESTION 54
In Kafka, is the following statement about the data sent by the Producer wrong? (multiple choice)
- A. Producer can produce data by connecting to any normal Broker instance
- B. Producer is responsible for producing data, Consumer is responsible for consuming data, Socket connection needs to be established between Producer and Consumer
- C. As a message producer, Producer can directly write data to ZooKeeper
- D. Producer can send data to Broker, and can send data to Consumer
Answer: B,C,D
NEW QUESTION 55
Which of the following methods can generate DStream objects?
- A. StreamingContext.socketStream(..)
- B. StreamingContext.fileStream(...)
- C. KafkaUtils.createDirectStream(...)
- D. KafkaUtils.createStream(...)
Answer: A,B,C,D
NEW QUESTION 56
Which source type does Flume support for real-time data collection?
- A. taildir
- B. JMS
- C. Log4j
- D. Thrift
Answer: A
NEW QUESTION 57
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 58
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 59
In FusionInsight HD, Oozie needs to upload the configuration files and jar packages that the job relies on to HDFS before submitting the job
- A. False
- B. True
Answer: B
NEW QUESTION 60
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. False
- B. True
Answer: B
NEW QUESTION 61
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 62
When writing MapReduce applications, which two interfaces usually need developers to implement?
- A. combine and sort
- B. reduce and combine
- C. map and reduce
- D. map and combine
Answer: C
NEW QUESTION 63
Regarding FusionInsight HD's Spark, which of the following programming languages can be used to develop Spark applications? (multiple choice)
- A. Python
- B. Java
- C. Scala
- D. C
Answer: A,B,C
NEW QUESTION 64
In FusionInsight HD, regarding the partition function of Hive, what is wrong in the following description?
- A. The partition field should be defined when the table is created
- B. There can only be one partition field, and multi-level partitions cannot be created
- C. The partition field can be used as the condition of the where clause
- D. Using partitions can reduce the data scan range of certain queries, thereby improving query efficiency
Answer: B
NEW QUESTION 65
When Flume writes into HDFS, what are the file generation methods? (multiple choice)
- A. According to the source file name, directly generate the file
- B. Set the number of events stored in a single file. When the number of events stored in the file reaches the set value, the old file will be closed and the new data will be written to the new file
- C. Set the file generation time interval. When the time interval is reached, the old file will be closed and the new data will be written into the new file
- D. Set the size of a single file. When the file size reaches the set value, the old file will be closed and the new data will be written into the new file
Answer: A,B,C,D
NEW QUESTION 66
In FusionInsight HD, when using Streaming's ACK mechanism, which of the following statements are correct? (multiple choice)
- A. After Acker is enabled, Streaming will identify the Tuple that failed to be sent and automatically resend it without human intervention.
- B. Starting from the spout, the failure of any link in the formed Tuple tree will mark the entire tree as a failure.
- C. Acker will mark the processing timeout or processing failure message as fail.
- D. The application needs to implement message retransmission logic in the fail() interface method of spout.
Answer: B,C,D
NEW QUESTION 67
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