Hadoop Quiz Questions – Part 3 1


Objective

This blog provides you the top Hadoop quiz questions for testing your Hadoop Knowledge. These Hadoop Quiz Questions are designed to help you in Hadoop Interview preparation. All the questions are provided with the detailed explanation of their answers. If you are not familiar with Apache Hadoop so you can refer our Hadoop Introduction Guide to make yourself prepare for this Hadoop Quiz.

Top Apache Hadoop Quiz Questions and Answers

Top Hadoop Quiz Questions and Answers

Q.1 Which command is used to check the status of all daemons running in the HDFS?

For detailed description follow: Hadoop HDFS Commands Module

Q.2 Hadoop works in

For detailed description follow: Hadoop Introduction Tutorial

Q.3 Which statement is false about Hadoop

For detailed description follow: Hadoop Introduction Tutorial

Q.4 Whch of the file contains the configuration setting for HDFS daemons

For detailed description follow: Hadoop – Installation Tutorial

Q.5 Which of the following is a distributed multi-level database?

For detailed description follow: Hadoop – Ecosystem Components

Q.6 Which of the follwing command is used to copy a directory from one node to another in HDFS?

For detailed description follow: Hadoop HDFS-Commands Module

Q.7 What is the default size of HDFS Data Block ?

For detailed description follow: Hadoop HDFS Tutorial

Q.8 A file in HDFS that is smaller than a single block size

For detailed description follow: Hadoop HDFS Tutorial

Q.9 In HDFS the files cannot be

For detailed description follow: Hadoop HDFS Tutorial

Q.10 Which among the following is the duties of the DataNodes

For detailed description follow: Hadoop HDFS-Architecture

Q.11 Among the following which is the default Partitioner for partitioning key space.

For detailed description follow: Hadoop MapReduce – Partitioner

Q.12 In HDFS put command is used to

For detailed description follow: Hadoop HDFS Commands Module

Q.13 Which of the following is the default OutputFormat?

For detailed description follow:Hadoop MapReduce – OutputFormat

Q.14 What is the correct sequence of data flow in MapReduce A. InputFormat, B. Mapper, C. Combiner, D. Reducer E. Partitioner F.OutputFormat"

For detailed description follow: Hadoop MapReduce – Data Flow

Q.15 How can you disable the reduce step

For detailed description follow: HadoopMapReduce – Reducer

Q.16 Is it possible to have hadoop job output in multiple directories?

For detailed description follow: Hadoop Tutorial Introduction

Q.17 Which of the following is used to set mappers for MapReduce jobs?

For detailed description follow: MapReduce – Mapper

Q.18 In which mode each daemon runs on a single node but there is separate java process for each daemon

For detailed description follow: Hadoop Introduction Tutorial

Q.19 In NameNode HA, when active node fails, which node takes the responsibilty of active node

For detailed description follow: HDFS – NameNode High Availability

Q.20 Which of the following is used to ingest data into Hadoop clusters?

For detailed description follow: Hadoop – Ecosystem

If in case you found any confusion in these Hadoop Quiz Questions, so leave your queries in the comment section given below. We will be glad to solve them.
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