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Huawei HCIP-Big Data Developer Sample Questions:

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

2. In Spark, which of the following is the operator that takes the intersection of the DataFrame?

A) filter (condifionExpr: String): DataFrame
B) dropDuplicates():DataFrame
C) intersect (other: Data Fra me): Data Fra me
D) join (right: DataFrame, join Exprs: Column): DataFrame

3. In FusionInsight HD, for the creation and read-write permissions of various resources in Solr, which of the following statements is wrong?

A) Users of the Solr user group can create Collection
B) Solr user group users can create a configuration set and specify the configuration set when creating a Collection
C) Collection creator, role with read and write access to the collection, and Solr admin role can update the collection
D) Only the collection creator and Solr admin roles can delete a collection

4. In FusionInsight HD, which of the following source types does Flume support? (multiple choice)

A) Avro
B) HBase
C) HTTP
D) Kafka

5. When the HDFS client writes files with N copies, which of the following is correct about the writing process? (multiple choice)

A) Support multiple users to write to the same file at the same time.
B) The copied file blocks are all stored on the same rack by default.
C) Each DataNode can store at most 1 copy.
D) The first copy of the data block is prioritized on the node where the client writing the data block is located.

Solutions: