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Huawei H13-723-ENU Exam Syllabus Topics:

Huawei HCIP-Big Data Developer Sample Questions:

1. In Kafka, which of the following commands can check how many partitions a topic has?

A) kafka-topics.sh --list
B) kafka-topics.sh - describe
C) kafka-topics.sh --alter
D) kafka-topics.sh --create

2. 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) 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)
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 ' group by name " ).filter( " stayTime >= 120 " ).collect().foreach(println)
D) 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)

3. Regarding the disaster tolerance of Streaming, which of the following statements is correct? (multiple choice)

A) When a node fails, tasks on that node will be reassigned to other normal nodes without manual intervention.
B) After the Supervisor process exits, it can be automatically recognized and pulled up by Nimbus without affecting the running business.
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.

4. In FusionInsight HD, regarding Oozie's job operation commands, which of the following descriptions are correct? (multiple choice)

A) The run command can make the job status RUNNING
B) The kill command can be used on jobs in PREP/SUSPEND/RUNNING status
C) The start command can make the job in the PREP state become RUNNING
D) The submit command can change the status of the job to PREP

5. In Kafka, is the following statement about the data sent by the Producer wrong? (multiple choice)

A) As a message producer, Producer can directly write data to ZooKeeper
B) Producer can produce data by connecting to any normal Broker instance
C) Producer is responsible for producing data, Consumer is responsible for consuming data, Socket connection needs to be established between Producer and Consumer
D) Producer can send data to Broker, and can send data to Consumer

Solutions: