Big Data Hadoop Online Quiz Questions – Part 9


Objective

It is very important to revise your knowledge after study. To keep this in mind we have designed this Big Data Hadoop Online Quiz to refresh your Hadoop knowledge. This Hadoop Quiz will help you to more understand the Apache Hadoop concepts because it covers the multiple choice questions of all the Hadoop ecosystem components such as HDFS, Mapreduce, Yarn etc. Hope this Apache Hadoop online quiz help you for Hadoop Interview preparation.

Big Data Hadoop Online Quiz for Hadoop Interview Preparation.

Frequently Asked Big Data Hadoop Online Quiz Questions

Q.1 Which command is used to know the current status of safe mode?

For detailed description follow: Safe mode in Hadoop

Q.2 Which property is used to enable/disable speculative execution?

For detailed description follow: MapReduce – Speculative Execution

Q.3 Distributed cache can cache files-

For detailed description follow: Hadoop – Distributed Cache

Q.4 Which tool is used to distributes data evenly across datanode?

For detailed description follow: Balancer in Hadoop

Q.5 Which tool is used to distributes data evenly on all disks of a datanode?

For detailed description follow: HDFS – Disk Balancer

Q.6 When a client contacts the namenode for accessing a file, the namenode responds with-

For detailed description follow: HDFS – Read-Write Operations

Q.7 Which of the following statement is true about Secondary NameNode?

For detailed description follow: HDFS – Architecture

Q.8 In the local disk of the namenode the files which are stored persistently are-

For detailed description follow: HDFS – Architecture

Q.9 Which of the following algorithms available for Erasure Coding?

For detailed description follow: HDFS – Erasure Coding

Q.10 For 129 MB file how many Blocks will be created?

For detailed description follow: HDFS – Data Blocks

Q.11 RecordReader handle record boundaries in Text files or Sequence files in MapReduce-

For detailed description follow: MapReduce – RecordReader

Q.12 HashPartitioner uses which method to determine, to which partition a given (key, value) pair will be sent?

For detailed description follow: MapReduce – Partitioner

Q.13 What are the most common OutputFormat in Hadoop?

For detailed description follow: MapReduce – OutputFormat

Q.14 Which of the following class is responsible for converting inputs to key-value Pairs?

For detailed description follow: MapReduce – RecordReader

Q.15 Which of the following is used set reducers for MapReduce jobs?

For detailed description follow: MapReduce – Reducer

Q.16 Which among the folloing is the Resource Management Layer?

For detailed description follow: Hadoop – Ecosystem Components

Q.17 Which of the following has occupied the place of JobTracker of MRV1?

For detailed description follow: Hadoop YARN Resource Manager

Q.18 Which of the following has occupied the place of TaskTracker of MRV1?

For detailed description follow: Hadoop YARN Node Manager

Q.19 Each database created in hive is stored as-

For detailed description follow: Hive – Introduction

Q.20 Which of the following is data flow scripting language for analysing unstructured data?

For detailed description follow: Hadoop – Ecosystem Components

If in case you have any confusion related to this Big Data Hadoop Quiz, so please let us know by leaving a comment. Hope we will solve them.

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