Huawei H13-723 : HCIP-Big Data Developer V1.0

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Huawei HCIP-Big Data Developer V1.0 Sample Questions:

1. In FusionInsight HD, in which ways can I view the debugging results of Oozie jobs? (multiple choice)

A) Check whether the returned result of Oozie's JAVA API meets expectations
B) View program running results through Hue's workflow dashboard
C) Oozie's own web interface can also view job execution results
D) Use Hue's file browser to check whether the desired file is generated in the HDFS specified directory

2. As the core object of Spark, which of the following characteristics does RDD have? (multiple choice)

A) Fault tolerance
B) Read only
C) Efficient
D) Partition

3. In Spark application development, which of the following codes can correctly count words?

A) val counts = textFile.map (line=>line.split (" ")).map (word => (word, 1)).groupByKey ()
B) val counts = textFile.flatMap (line=>line.split (" ")).map (word => (word, 1)).groupByKey ()
C) val counts = textFile.map (line => line.split ("')).map (-rd => (word, 1)).reduceByKey(_ +_)
D) val counts = textFile.flatMap (line=>line.split (" ")).map (word => (word, 1)).reduceByKey(_ +_)

4. In Spark, assuming that lines is a DStream object, the filter statement can filter out 80% of the data. Which statement is correct for the following two statements:
X: lines.filter(...).groupByKey(...)
Y: lines.groupByKey(...).filter(...)

A) It is impossible to determine the performance difference between X and Y
B) X has higher performance than Y
C) X has lower performance than Y
D) X and Y have the same performance

5. In FusionInsight HD, when using SparkSQL, which of the following methods (or tools) can be used to execute SQL statements? (multiple choice)

A) JDBC
B) spark-sql
C) spark-beeline

Solutions: