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Huawei HCIP-Big Data Developer Sample Questions:

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

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

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

3. In MapReduce application development, which of the following JAVA classes is responsible for managing and running a computing task?

A) lob
B) Context
C) Configuration
D) FileSystem

4. In Spark, which statement about broadcast variables is correct?

A) Broadcast variables are generated by the SparkContext.broadcast() method
B) The broadcast variable is saved in each Executor
C) Broadcast variables are read-only
D) Broadcast variables are saved in each Task

5. In FusionInsigt HD, which of the following components can be used for data collection? (multiple choice)

A) Flume
B) Loader
C) HBase
D) MapReduoe

Solutions: