Explore topic-wise MCQs in Hadoop.

This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Hadoop knowledge and support exam preparation. Choose a topic below to get started.

1.

WHICH_OF_THE_FOLLOWING_WRITES_MAPFILES_AS_OUTPUT_??$

A. DBInpFormat
B. MapFileOutputFormat
C. SequenceFileAsBinaryOutputFormat
D. None of the mentioned
Answer» D. None of the mentioned
Discussion
2.

Which of the following is the default output format ?

A. TextFormat
B. TextOutput
C. TextOutputFormat
D. None of the mentioned
Answer» D. None of the mentioned
Discussion
3.

___________ is an input format for reading data from a relational database, using JDBC.

A. DBInput
B. DBInputFormat
C. DBInpFormat
D. All of the mentioned
Answer» C. DBInpFormat
Discussion
4.

__________ class allows you to specify the InputFormat and Mapper to use on a per-path basis.

A. MultipleOutputs
B. MultipleInputs
C. SingleInputs
D. None of the mentioned
Answer» C. SingleInputs
Discussion
5.

__________ is a variant of SequenceFileInputFormat that converts the sequence file’s keys and values to Text objects$

A. SequenceFile
B. SequenceFileAsTextInputFormat
C. SequenceAsTextInputFormat
D. All of the mentioned
Answer» C. SequenceAsTextInputFormat
Discussion
6.

_________ is the output produced by TextOutputFor mat, Hadoop default OutputFormat.

A. KeyValueTextInputFormat
B. KeyValueTextOutputFormat
C. FileValueTextInputFormat
D. All of the mentioned
Answer» C. FileValueTextInputFormat
Discussion
7.

The key, a ____________ is the byte offset within the file of the beginning of the line.

A. LongReadable
B. LongWritable
C. LongWritable
D. All of the mentioned
Answer» C. LongWritable
Discussion
8.

___________ takes node and rack locality into account when deciding which blocks to place in the same split

A. CombineFileOutputFormat
B. CombineFileInputFormat
C. TextFileInputFormat
D. None of the mentioned
Answer» C. TextFileInputFormat
Discussion