Cloudera Hadoop Developer Certification Questions and Answer (Dumps and Practice Questions)

Question :

In which of the below scenerio Hadoop framework should not be used

1. Working with small and structured datasets
2. If there is a requirement of transaction
3. For Structured analytics
4. 1 and 2
5. 1 , 2 and 3

Correct Answer : 4

Hadoop is not a good fit for Small Data sets and wherever is a need for Transactions e.g. OLTP

Refer HadoopExam.com Recorded Training Module : 1





Question :

DistCp tool is used for

1. Tool used for large inter or intra cluster copying
2. Uses MapReduce for distribution
3. 1 and 2 are correct
4. None of the above



Correct Answer : 3

DistCp (distributed copy) is a tool used for large inter/intra-cluster copying.
It uses Map/Reduce to effect its distribution, error handling and recovery, and reporting.
It expands a list of files and directories into input to map tasks,
each of which will copy a partition of the files specified in the source list.
Its Map/Reduce pedigree has endowed it with some quirks in both its semantics and execution.
The purpose of this document is to offer guidance for common tasks and to elucidate its model.

Refer HadoopExam.com Recorded Training Module : 2






Question :

Which of the following data format can be analyzed by Hadoop


1. XML
2. CSV
3. JSON
4. Text
5. All of the above


Correct Answer : 5

Hadoop is good fit for analyzing structured (Text,CSV,XML) Semi-structured (email,blogs) and unstructured data (Audio,Video)

Refer HadoopExam.com Recorded Training Module : 1 and 2

Related Questions

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Question :

Which is the correct command to list all the files from current directory

1. hadoop fs -ls
2. hadoop fs -list
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4. All of the above




Question :

Which is the correct command ?


1. hadoop fs -ls
2. hadoop fs -copyToLocal /user/pappu/pappu.txt pappu.txt
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4. 1,2 and 3 are correct
5. Only 1 and 2 are correct





Question : Which is the correct command to delete the directory

1. hadoop fs -r pappu
2. hadoop fs -remove pappu
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4. hadoop fs -rem pappu


Question :

Which statement is correct for the MapReduce

1. MapReduce is a method for distribution a task across multiple nodes
2. Each node processes data stored on that node
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4. All of the above




Question :

Select the feature of Mapreduce

1. Automatic parallelization and distribution
2. fault-tolerance
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4. All of the above



Question : Hadoop Mapreduce code can be written in other than Java language ?

1. True
2. False