Updated Nov-2021 100% Cover Real H13-723 Exam Questions - 100% Pass Guarantee
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NEW QUESTION 80
When a MapReduce application is executed, which of the following actions occurred before the map phase?
- A. split
- B. sort
- C. combine
- D. partition
Answer: A
NEW QUESTION 81
In the FusionInsight HD product, what is the role name of the Kafka service?
- A. Consumer
- B. Producer
- C. Broker
- D. ZooKeeper
Answer: C
NEW QUESTION 82
Redis LIST data structure, which of the following scenarios is suitable for? (multiple choice)
- A. uniq operation, for example, get the weight value of all data in a certain period of time
- B. Simulate stack operation
- C. Get the latest N data operations: for example, get the latest 10 comments on a Weibo
- D. Build a queue system, such as a message queue
Answer: B,C,D
NEW QUESTION 83
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 84
When using Solr for full-text search, you can specify the response format of the query result through the wt parameter.
Regarding the response format of Solr query results, what is wrong in the following statement?
- A. Support CSV, JSON and HTML
- B. Support CSV and JSON
- C. Support CSV, JSON and XML
Answer: A
NEW QUESTION 85
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 86
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 87
In Spark, because DataFrame is a higher-level interface than RDD, the call level will be more. Therefore, the performance of all programs developed based on DataFrame will be worse than that of programs developed based on RDD.
- A. True
- B. False
Answer: B
NEW QUESTION 88
For the design principles of HBase rowkey, which of the following descriptions is correct? (multiple choice)
- A. The attribute value with high access weight is placed in the second half of Rowkey
- B. Attribute values with good dispersion are placed in the second half of Rowkey
- C. The attribute value with high access weight is placed in front of RowKey
- D. The attribute value with good dispersion is placed in the first half of Rowkey
Answer: C,D
NEW QUESTION 89
In FusionInsight HD, the Streaming packaging tool is used to package the business code jar package and other dependent jar packages into a complete Streaming application jar package
- A. True
- B. False
Answer: A
NEW QUESTION 90
In FusionInsigt HD, if an application wants to complete Kerberos security authentication, which of the following options must be used? (multiple choice)
- A. krb5.conf configuration file
- B. jaas.conf configuration file
- C. User account applied for on FusionInsight Manager
- D. The keytab file of the user account
Answer: A,C,D
NEW QUESTION 91
A customer has the following scenario: indexing PB-level data requires real-time indexing performance of more than 2MB/s, and supports full-text retrieval, and requires query performance to reach a second-level response.
For the above scenarios, regarding the Solr collection design, which of the following design schemes are reasonable? (multiple choices)
- A. It can be used in conjunction with Hbase, set the uniqueKey field and HBase RowKey field to the same value, and use the implicit Router method to make the document evenly distributed to each shard
- B. It can be used in conjunction with HBase. Solr only builds indexes for non-RowKey fields that need to be retrieved. HBase is responsible for storing data in all fields.
- C. When creating a Collection, you can set the number of Shards to be an integer multiple of the number of SoIrServer instances to ensure that each SoIrServer instance is negatively balanced as much as possible
- D. In the configuration set, the DirectoryFactory parameter in the solrconfig.xml file can be set to org.apache.solr.core.NIOFSDirectoryFactory
Answer: B,C,D
NEW QUESTION 92
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 93
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 94
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 95
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 96
Which distributed computing frameworks can the Hive component of FusionInsigt HD run on? (multiple choice)
- A. MapReduoe
- B. HDFS
- C. Spark
- D. Streaming
Answer: A,C
NEW QUESTION 97
Which of the following is correct about the HDFS client's file reading process? (multiple choice)
- A. Download data from the nearest DataNode first.
- B. The file data is first returned from the DataNode to the NameNode, and then sent from the NameNode to the client.
- C. 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.
- D. Support multiple clients to read the same file data from the DataNode at the same time.
Answer: A,C,D
NEW QUESTION 98
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 99
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. Using partitions can reduce the data scan range of certain queries, thereby improving query efficiency
- C. The partition field can be used as the condition of the where clause
- D. There can only be one partition field, and multi-level partitions cannot be created
Answer: D
NEW QUESTION 100
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