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Welcome to the Hadoop IO MCQs Page

Dive deep into the fascinating world of Hadoop IO with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Hadoop IO, a crucial aspect of Hadoop. In this section, you will encounter a diverse range of MCQs that cover various aspects of Hadoop IO, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Hadoop.

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Check out the MCQs below to embark on an enriching journey through Hadoop IO. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Hadoop.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Hadoop IO. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Hadoop IO MCQs | Page 1 of 6

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Q1.
Hadoop I/O Hadoop comes with a set of ________ for data I/O.

a.

methods

b.

commands

c.

classes

d.

none of the mentioned

Discuss
Answer: (d).none of the mentioned
Q2.
Apache Hadoop ___________ provides a persistent data structure for binary key-value pairs.

a.

GetFile

b.

SequenceFile

c.

Putfile

d.

All of the mentioned

Discuss
Answer: (b).SequenceFile
Q3.
How many formats of SequenceFile are present in Hadoop I/O?

a.

2

b.

3

c.

4

d.

5

Discuss
Answer: (b).3
Q4.
Which of the following format is more compression-aggressive?

a.

Partition Compressed

b.

Record Compressed

c.

Block-Compressed

d.

Uncompressed

Discuss
Answer: (c).Block-Compressed
Q5.
The __________ is a directory that contains two SequenceFile.

a.

ReduceFile

b.

MapperFile

c.

MapFile

d.

None of the mentioned

Discuss
Answer: (c).MapFile
Q6.
The ______ file is populated with the key and a LongWritable that contains the starting byte position of the record.

a.

Array

b.

Index

c.

Immutable

d.

All of the mentioned

Discuss
Answer: (b).Index
Q7.
The _________ as just the value field append(value) and the key is a LongWritable that contains the record number, count + 1.

a.

SetFile

b.

ArrayFile

c.

BloomMapFile

d.

None of the mentioned

Discuss
Answer: (b).ArrayFile
Q8.
____________ data file takes is based on avro serialization framework which was primarily created for hadoop.

a.

Oozie

b.

Avro

c.

cTakes

d.

Lucene

Discuss
Answer: (b).Avro
Q9.
The _________ codec from Google provides modest compression ratios.

a.

Snapcheck

b.

Snappy

c.

FileCompress

d.

None of the mentioned

Discuss
Answer: (b).Snappy
Q10.
Which of the following compression is similar to Snappy compression?

a.

LZO

b.

Bzip2

c.

Gzip

d.

All of the mentioned

Discuss
Answer: (a).LZO
Page 1 of 6

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