Download the Latest H13-723-ENU Dumps - 2021 H13-723-ENU Exam Questions
Latest Huawei H13-723-ENU Certification Practice Test Questions
NEW QUESTION 45
Which of the following reasons will cause HDFS NameNode to enter safemode (safe read-only mode)? (multiple choice)
- A. The missing copy exceeds the threshold.
- B. The number of lost blocks exceeds the threshold.
- C. The damaged copy exceeds the threshold.
- D. The disk space where the metadata of the active and standby NameNodes reside is insufficient.
Answer: B,D
NEW QUESTION 46
Regarding Kafka's Producer, which of the following statements is correct? (multiple choice)
- A. When Producer produces data, it needs to connect to ZooKeeper first, and then connect to Broker
- B. Producer is a message producer
- C. Multiple Producer processes can be started at the same time to send data to the same topic
- D. Producer production data needs to specify Topic
Answer: B,C,D
NEW QUESTION 47
What are the several parameter setting methods for Spark applications? (multiple choices)
- A. When submitting the application, set it through --conf
- B. Configure in the application configuration file spark-defaults.conf
- C. In the application code, set by the setProperty method of SparkContext
- D. In the application code, set through the SparkConf object
Answer: A,B,D
NEW QUESTION 48
Solr is a high-performance, full-text search service based on Lucene. Solr has extended Lucene to provide a richer query language than Lucene, and implements a powerful full-text search function with a high degree of scalability. At the same time, starting from Solr 4.0 version, SolrCloud mode is supported.
- A. True
- B. False
Answer: A
NEW QUESTION 49
To create a table through HBase's createTable method, what parameters must be passed in?
- A. Can be empty
- B. Table name and column family
- C. Table names and columns
- D. Table name
Answer: B
NEW QUESTION 50
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 51
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 52
For the HBase component of the FusionInsight HD platform, what attributes of the secondary index need to be defined when adding a secondary index? (multiple choice)
- A. The name of the column family to which the index column belongs
- B. Index column type
- C. Index column
- D. Index name
Answer: A,B,C,D
NEW QUESTION 53
Hive service and HBase service are deployed on a FusionInsight cluster, and two apps (applications) are deployed on Tomcat. One app is to access the HBase service, and the other app is to access the Hive service. Regarding authentication, which methods are as follows Is it right? (multiple choice)
- A. Just do authentication on the app that accesses the HBase service
- B. Just do authentication on the app that accesses the Hive service.
- C. Deploy these two apps to two independent Tomcats, and then authenticate each
- D. Combine these two apps into one and do authentication on the new app
Answer: C,D
NEW QUESTION 54
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 55
Regarding the Hive service of the FusionInsight HD platform and its WebHCat development interface, which of the following descriptions is incorrect?
- A. Support REST-based query request
- B. You can create tables, query and other operations through WebHCat
- C. The data format returned by WebHCat is XML
- D. WebHCat provides external services based on HTTP and HTTPS protocols
Answer: C
NEW QUESTION 56
In FusionInsight HD, what are the computing frameworks that can be used in real-time processing scenarios? (multiple choice)
- A. MapReduoe
- B. HDFS
- C. Spark Streaming
- D. Streaming
Answer: C,D
NEW QUESTION 57
Regarding the flow of data in Flume, which of the following descriptions is correct?
- A. (1) Data from source to channel; (2) Sink gets data from channel
- B. (1) Data from channle to source; (2) Sink gets data from source
- C. (1) Data from channle to source; (2) Sink gets data from source
- D. (1) Data from sink to channle; (2) Source gets data from channel
Answer: A
NEW QUESTION 58
There is a file test.txt in the root directory of the HDFS cluster. Which of the following commands can check the DatNode node information stored in this file?
- A. hdfs fsck /test.txt -list -corruptfileblocks
- B. hdfs fsck /test.txt -blocks
- C. hdfs fsck /test.txt -files
- D. hdfs fsck /test.txt -locations
Answer: D
NEW QUESTION 59
In Spark, which of the following is the operator that takes the intersection of the DataFrame?
- A. dropDuplicates():DataFrame
- B. intersect (other: Data Fra me): Data Fra me
- C. join (right: DataFrame, join Exprs: Column): DataFrame
- D. filter (condifionExpr: String): DataFrame
Answer: B
NEW QUESTION 60
For HBase column family, which of the following attributes can be set? (multiple choice)
- A. Versions
- B. Coprocessor
- C. TTL
- D. Compression
Answer: A,C,D
NEW QUESTION 61
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. Pre-division region
- B. Redundancy method (use space for time plant efficiency)
- C. Compromise method (rowkey design takes into account the business needs of A and B)
- D. Create a secondary index
Answer: B,C,D
NEW QUESTION 62
In FusionInsight HD, in which ways can I view the debugging results of Oozie jobs? (multiple choice)
- A. Use Hue's file browser to check whether the desired file is generated in the HDFS specified directory
- B. Check whether the returned result of Oozie's JAVA API meets expectations
- C. View program running results through Hue's workflow dashboard
- D. Oozie's own web interface can also view job execution results
Answer: A,B,C,D
NEW QUESTION 63
For an application running on the MapReduce platform, where will the jar package that the application depends on be placed?
- A. HIVE
- B. DB
- C. HDFS
- D. HBASE
Answer: C
NEW QUESTION 64
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. Obtained from the FusionInsight Manager Solr service configuration interface
- C. Obtain from the Solr Admin UI interface
Answer: C
NEW QUESTION 65
When designing a certain collection of Solr, you need to design its Schema, and realize the design of the Schema by configuring the schema.xml file. What is wrong about the Schema statement below?
- A. For fields that do not need to store the original value, the stored attribute can be set to false.
- B. Schema is similar to the table structure in a relational database. It is used to define the structure of index data. It mainly consists of three parts: unlqueKey, Field and FleldType.
- C. copyField can be defined as follows: <field name= " cat " type= " string " indexed = " true " stored = " true " docValues= " true " multiValued= " false " /> <field name= " dog " type = " string " indexed = " true " stored = " true " docValues= " true " multi Valued = " false " /> <field name= " text " type= " text_general " indexed = " true " stored = " false " multiValued = " false " /> <copyField source= " cat " dest= " text " maxChars= " 30000 " /> <copyField source= " dog " dest= " text " maxChars = " 30000 " />.
- D. For a field of the same document, there are multiple values, and they all need to be retained, then the multiValued of the field must be set to true.
Answer: C
NEW QUESTION 66
As the core object of Spark, which of the following characteristics does RDD have? (multiple choice)
- A. Read only
- B. Partition
- C. Efficient
- D. Fault tolerance
Answer: A,B,C,D
NEW QUESTION 67
The system time of the node where the HDFS client is located must be consistent with the system time of the FusionInsight HD cluster. If there is a time difference, the time difference should be less than a few minutes?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: D
NEW QUESTION 68
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 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
- C. 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
- D. 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
Answer: A,B,C,D
NEW QUESTION 69
Set the data block storage size to 128M. When the HDFS client writes a file, when writing a 100M file, how much storage space is actually occupied?
- A. 50M
- B. 100M
- C. 64M
- D. 128M
Answer: B
NEW QUESTION 70
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