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[2021] H13-723 PDF Questions - Perfect Prospect To Go With Exams-boost Practice Exam
NEW QUESTION 91
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 92
In FusionInsight HD, Oozie supports HDFS Action.
- A. True
- B. False
Answer: A
NEW QUESTION 93
To create a table through HBase's createTable method, what parameters must be passed in?
- A. Can be empty
- B. Table names and columns
- C. Table name and column family
- D. Table name
Answer: C
NEW QUESTION 94
For Spark Streaming applications, in a JVM, only one StreamingContext can be active at the same time.
- A. True
- B. False
Answer: A
NEW QUESTION 95
In FusionInsight HD, Spark uses YARN as the cluster resource management system by default.
- A. True
- B. False
Answer: A
NEW QUESTION 96
In HDFS application development, which of the following are the interfaces supported by the HDFS service? (multiple choice)
- A. FileSystem.append
- B. FileSystem.create
- C. BufferedOutputStream.flush
- D. BufferedOutputStream.write
Answer: A,B,C,D
NEW QUESTION 97
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. Date + mobile phone number
- C. Name + mobile phone number
- D. Mobile phone number + name
Answer: A
NEW QUESTION 98
In FusionInsight HD, which of the following parameters of the Hive client are used to control reduce concurrency? (multiple choice)
- A. hive.exec-ducers.max
- B. hive.exec.max.dynamic.partitions.pernode
- C. hive.exec.max.dynamic.partitions
- D. hive.exec.reducers.bytes.per.reducer
Answer: A,D
NEW QUESTION 99
Regarding Redis cluster topology information, which of the following descriptions is correct?
- A. Both
- B. The client caches the cluster topology information
- C. Neither
- D. The server caches the cluster topology information
Answer: A
NEW QUESTION 100
In the process of Flume cascade transmission, you can use the fail over mode to transmit, so that if the Flume node of the next hop fails or the data is received abnormally, it can automatically switch to another way to continue transmission.
- A. True
- B. False
Answer: A
NEW QUESTION 101
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. 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.
- B. 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.
- C. For fields that do not need to store the original value, the stored attribute can be set to false.
- D. 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 " />.
Answer: D
NEW QUESTION 102
Regarding the characteristics of Redis, which of the following descriptions is correct? (multiple choice)
- A. Rich data structure
- B. Support SQL query interface
- C. Low latency
- D. Support data persistence
Answer: A,C,D
NEW QUESTION 103
What distributed computing framework does the FusionInsigt HD big data platform provide? (multiple choice)
- A. MapReduce
- B. Streaming
- C. Spark
- D. HBase
Answer: A,B,C
NEW QUESTION 104
In the MapReduce development framework, what is the function of the InputFormat class?
- A. Combine key-value pairs with the same key value in the result of the map phase
- B. Split the input data into individual splits, and further split the split into <key, value> pairs, which are then used as the input of the map function
- C. Sort and merge the results of the map stage
- D. Combine the results of all map stages to get the final result
Answer: B
NEW QUESTION 105
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. False
- B. True
Answer: A
NEW QUESTION 106
Suppose there is an application that needs to frequently access the user table in the Oracle database. In order to improve performance, Redis is introduced to cache user information.
For this scenario, which of the following is the best data structure choice for Redis?
- A. hash
- B. list
- C. sorted set
- D. set
Answer: A
NEW QUESTION 107
In FusionInsigt HD, if an application wants to complete Kerberos security authentication, which of the following options must be used? (multiple choice)
- A. jaas.conf configuration file
- B. User account applied for on FusionInsight Manager
- C. krb5.conf configuration file
- D. The keytab file of the user account
Answer: B,C,D
NEW QUESTION 108
Spark Streaming, as a stream processing engine for micro-batch processing, converts the data of each time slice into a partition in an RDD for calculation.
- A. True
- B. False
Answer: A
NEW QUESTION 109
Which of the following descriptions about the characteristics of Kafka is correct? (multiple choice)
- A. Kafka can achieve message persistence
- B. Kafka can ensure that the messages in each Partition are in order
- C. Kafka is a high-throughput, distributed, publish-and-subscribe messaging system
- D. Kafka is suitable for offline and online message consumption scenarios
Answer: A,B,C,D
NEW QUESTION 110
Regarding the flow of data in Flume, which of the following descriptions is correct?
- A. (1) Data from sink to channle; (2) Source gets data from channel
- B. (1) Data from source to channel; (2) Sink gets data from channel
- C. (1) Data from channle to source; (2) Sink gets data from source
- D. (1) Data from channle to source; (2) Sink gets data from source
Answer: B
NEW QUESTION 111
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 112
In FusionInsight HD, where can I view the running results of the MapReduce application?
- A. FusionInsight Manager web interface
- B. Solr web interface
- C. Loader web interface
- D. Yarn web interface
Answer: D
NEW QUESTION 113
In Kafka, Consumer can support both offline and online message consumption, but the consumption of data is sequential consumption.
- A. True
- B. False
Answer: A
NEW QUESTION 114
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