Practice H13-723-ENU Questions With Certification guide Q&A from Training Expert Prep4away
Free Huawei H13-723-ENU Test Practice Test Questions Exam Dumps
NEW QUESTION 33
In FusionInsight HD V100R002C60, regarding the Hive Python interface type, which of the following descriptions is incorrect?
- A. The hive_python_client script provides the function of directly executing SQL, such as hive_python_client'show tables '
- B. The client must be installed with setuptools, and the version is not lower than 5.0
- C. Python secondary development does not support secure clusters
- D. The Python version is required to be no lower than 2.6.6 and no higher than 2.7.0
Answer: C
NEW QUESTION 34
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. False
- B. True
Answer: B
NEW QUESTION 35
In the Fusioninsight HD product, what is wrong about the Kafka secure and non-secure port description?
(Note: The old API refers to the old Producer API and the old Consumer API. Among them, the old Consumer API: refers to the interface defined in kafka.consumer.ConsumerConnector; the old Producer API: refers to the interface defined in kafka.producer.Producer.)
- A. Kafka cluster security access port defaults to 21007, non-secure access port defaults to 21005.
- B. For topics with ACL set, you can use the old API to connect to port 21005 for access.
- C. The old API only supports access to port 21005; the new API is compatible with access to non-secure port 21005 and secure port 21007.
- D. The premise for the old API to access a topic through port 21005 is that the server parameter allow.everyone.if.no.acl.found is set to true, and the topic does not have ACL attributes set
Answer: B
NEW QUESTION 36
There are the following business scenarios: the user's online log files have been stored on HDFS, and the log file content format is: each online record has three fields, namely name, gender, and online time, separated by "," between the fields; All female netizens who spend more than two hours online are required to print out.
Which of the following code fragments can achieve the above business scenarios? (multiple choice)
- A. val text = sc.textFile("/data/file/path") val data = text.filter(_.contains("female")) val femaleData:RDD[(String,Int)] = data.map{Iine => val t = line.split( ' , ' ) (t(0),t(2).tolnt) }.reduceByKey(_ + _) val result = femaleData.filter(line => line._2> 120) result.collect().map(x => x._1 + ' , ' + x._2).foreach(println)
- B. val text = sc.textFile("/data/file/path") val data = text.filter(_.contains("female")) val femaleData:RDD[(String,Int)] = data.map{Iine => val t = line.split( ' , ' ) (t(0),t(2).tolnt) }. val result = femaleData.filter(line => line._2> 120) result.collect().map(x => x._1 + ' , ' + x._2).foreach(println)
- C. sc.textFile( " /data/file/path " .map(_.split( " , " ).map(p => Femalelnfo(p(0), p(1), p (2) .trim.tolnt)).toDF.registerTempTable("FemalelnfoTable") sqlContext.sql("select name,sum(stayTime) as stayTime from FemalelnfoTable where gender = ' Female '" ).filter( " stayTime >= 120 " ).collect().foreach(println)
- D. sc.textFile( " /data/file/path " .map(_.split( " , " ).map(p => Femalelnfo(p(0), p(1), p (2) .trim.tolnt)).toDF.registerTempTable("FemalelnfoTable") sqlContext.sql("select name,sum(stayTime) as stayTime from FemalelnfoTable where gender = ' Female ' group by name " ).filter( " stayTime >= 120 " ).collect().foreach(println)
Answer: A,D
NEW QUESTION 37
Oozie's workflow.xml file is a workflow configuration file
- A. False
- B. True
Answer: B
NEW QUESTION 38
In FusionInsight HD, regarding Hive's data loading function (importing data through Hive's LOAD command), what is wrong in the following description?
- A. It can be directly loaded to the hive table from the local hard disk of the node where the client is located
- B. Hive's data loading process will not parse the specific file content, mainly the process of file transfer
- C. It can be loaded directly to the hive table from HDFS
- D. It can be directly loaded to the hive table from the local hard disk of the node where HiveServer is located
Answer: A
NEW QUESTION 39
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: A
NEW QUESTION 40
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 41
If a user wants to develop an application to access the HBase service, he first applies for a machine-to-machine account teste1, and sets the permission to access the HBase service: then download the keytab file of the account and use the account to run the application. Subsequent business requirements for this application require access to the Hive service. After the tested user is granted access to the Hive component, the user's keytab file needs to be re-downloaded.
- A. False
- B. True
Answer: A
NEW QUESTION 42
In FusionInsight HD, what are the computing frameworks that can be used in real-time processing scenarios? (multiple choice)
- A. Spark Streaming
- B. HDFS
- C. MapReduoe
- D. Streaming
Answer: A,D
NEW QUESTION 43
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 44
In FusionInsight HD's Hive, the user-defined UDF can have the same name as the Hive built-in UDF. In this case, the user-defined UDF will be used.
- A. False
- B. True
Answer: A
NEW QUESTION 45
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 46
In the FusionInsight HD system, with regard to the Hive JDBC interface type, which of the following descriptions is correct?
- A. When using JDBC to submit SQL, you can add a semicolon ";" after the SQL statement.
- B. In a secure cluster environment, before establishing a connection with Hive, you need to log in using a unified authentication method.
- C. Hive is different from traditional databases, so the connection established by JDBC does not need to be closed.
- D. In a network isolation environment, ZooKeeper's IP can be configured as either a service IP or a management IP.
Answer: B
NEW QUESTION 47
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. 128M
- C. 64M
- D. 100M
Answer: D
NEW QUESTION 48
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 49
In Spark, which of the following is the operator that takes the intersection of the DataFrame?
- A. join (right: DataFrame, join Exprs: Column): DataFrame
- B. dropDuplicates():DataFrame
- C. filter (condifionExpr: String): DataFrame
- D. intersect (other: Data Fra me): Data Fra me
Answer: D
NEW QUESTION 50
When the cluster is normal, the Redis client initiates a get call, and there are () message interactions between the client and the server?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
NEW QUESTION 51
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: A
NEW QUESTION 52
To create a table through HBase's createTable method, what parameters must be passed in?
- A. Can be empty
- B. Table name
- C. Table names and columns
- D. Table name and column family
Answer: D
NEW QUESTION 53
As the core object of Spark, which of the following characteristics does RDD have? (multiple choice)
- A. Read only
- B. Fault tolerance
- C. Partition
- D. Efficient
Answer: A,B,C,D
NEW QUESTION 54
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