Apache Hadoop Quiz – Part 2

Objective

This Apache Hadoop Quiz will help you to revise your Hadoop concepts and check your Big Data knowledge. It will increase your confidence while appearing for Hadoop interviews to land your dream Big Data jobs in India and abroad. Answers to all these Hadoop Quiz Questions are also provided along with them, it will help you to brush up your Knowledge.

If you are not familiar with Apache Hadoop, so you can refer our Hadoop Introduction Tutorial. This will provide you the detailed description of Apache Hadoop framework and help you to solve the Hadoop Quiz Questions easily.

Hadoop Quiz Questions and Answers

Q.1 Which of the following is the daemon of Hadoop?

NameNode

NodeManager

DataNode

All of the above

For detailed description follow: Hadoop Introduction Tutorial

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Q.2 Which one of the following is false about Hadoop?

It is a distributed framework.

The main algorithm used in it is Map Reduce

It runs with commodity hard ware

All are true

For detailed description follow: Hadoop Introduction Tutorial

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Q.3 Hadoop Framework is written in

Python

c++

Java

Scala

For detailed description follow: Hadoop Introduction Tutorial

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Q.4 Which of the following is component of Hadoop?

YARN

HDFS

MapReduce

All of the above

For detailed description follow: Hadoop introduction Tutorial

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Q.5 What license is Apache Hadoop distributed under ?

Mozilla Public License

Apache License 2.0

Shareware

Commercial

For detailed description follow: Hadoop Introduction Tutorial

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Q.6 Which of the following platforms does Apache Hadoop run on ?

Cross-platform

Bare metal

Unix-like

Debian

For detailed description follow: Hadoop Introduction tutorial

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Q.7 Which type of data Hadoop can deal with?

Structured

Semi-Structured

Unstructured

All of the above

Learn Hadoop from Industry Experts

For detailed description follow: Hadoop Introduction tutorial

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Q.8 The source of HDFS architecture in Hadoop originated as

Google distributed filesystem

Yahoo distributed filesystem

Facebook distributed filesystem

None of the above

For detailed description follow: HDFS Introduction Tutorial

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Q.9 What is HDFS?

Storage layer

Batch processing engine

Resource Management Layer

None of the above

For detailed description follow: Hadoop HDFS Tutorial

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Q.10 What is Block in Hadoop HDFS?

It is the logical representation of data

It is the physical representation of data

Both of the above

None of the above

For detailed description follow: HDFS – Data Blocks

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Q.11 As compared to RDBMS, Apache Hadoop

Has higher data Integrity

Does ACID transactions

Is suitable for read and write many times

Works better on unstructured and semi-structured data.

For detailed description follow:Hadoop Introduction Tutorial

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Q.12 Which of the follwing maps input key/value pairs to a set of intermediate key/value pairs?

Mapper

Reducer

RecordReader

None of the mentioned

For detailed description follow: Hadoop MapReduce Introduction Tutorial

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Q.13 Which of the following is the default InputFormat,which treats each value of input a new value and the associated key is byte offset.

FileInputFormat

KeyValueTextInputFormat

TextInputFormat

All of the mentioned

For detailed description follow:Hadoop MapReduce – InputFormat

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Q.14 Which of the following statements is true about key-value pairs ?

key class must implement Writable

key class must implement WritableComparable.

Value class must implement WritableComparable.

Value class must extend WritableComparable

For detailed description follow: Hadoop MapReduce – Key-value Pairs

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Q.15 Which among the following are the duties of the NameNodes

Manage file system namespace

It is responsible for storing actual data

Perform read-write operation as per request for the clients

All of the above

For detailed description follow: HDFS Introduction Tutorial

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Q.16 HDFS allow a client to read a file which is already opened for writing?

TRUE

FALSE

For detailed description follow: HDFS Introduction Tutorial

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Q.17 Which of the following is not an InputFormat in Hadoop ?

TextInputFormat

KeyInputFormat

SequenceFileInputFormat

KeyValueInputFormat

For detailed description follow: Hadoop MapReduce – InputFormat

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Q.18 Aggregation cannot be done in Mapper

TRUE

FALSE

For detailed description follow: Hadoop MapReduce – Mapper

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Q.19 Choose the correct statement

Datanode manage file system namespace

Namenode stores metadata

NameNode stores actual data

None of the above

For detailed description follow: Hadoop HDFS Tutorial

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Q.20 What is default replication factor ?

1

3

5

2

For detailed description follow: Hadoop HDFS Introduction

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 PLAY AGAIN !

For any query related to these Apache Hadoop Quiz Questions, do let us know by leaving a comment in a section given below. We will be glad to solve your queries.

See Also-

• Hadoop Quiz – Part 1
• Hadoop Quiz – Part 3