Virtusa Consulting Services Pvt Ltd interview questions and answers

243 Articles

243

What is Cassandra database software ?

July 13, 2021

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July 13, 2021

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Answer : Apache Cassandra is a simple and open-source provides NoSQL DBMS build to handle huge volume of data against more fabric servers

cassandra

Editor

What is the process to perform an incremental data load in sqoop ?

July 12, 2021

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July 12, 2021

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Answer : Sqoop provides an incremental import mode.

Big Data

Editor

What is commodity hardware ?

July 12, 2021

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July 12, 2021

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Answer : Commodity hardware is a low-cost system identified …

Big Data

Editor

What are the features of Apache HBase ?

July 12, 2021

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July 12, 2021

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Answer : Linear and modular scalability…

Big Data

Editor

Difference between Hive and HBase ?

July 12, 2021

1 Min Read

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July 12, 2021

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Answer : Hive is a datawarehousing package built on the top of Hadoop…

Big Data

Editor

What are the different configuration files in Hadoop ?

July 12, 2021

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July 12, 2021

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Answer : hadoop-env.sh,core-site.xml,hdfs-site.xml…

Big Data

Editor

What are the different types of file permissions in HDFS ?

July 12, 2021

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July 12, 2021

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Answer : Hadoop distributed file system (HDFS) uses a specific permissions…

Big Data

Editor

Difference between nfs and hdfs ?

July 12, 2021

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July 12, 2021

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Answer : NFS (Network File System) is one of the oldest and popular…

Big Data

Editor

Why do we need Data Locality in Hadoop ?

July 12, 2021

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July 12, 2021

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Answer : Datasets in HDFS store as blocks in DataNodes…

Big Data

Editor

What are the running modes of Hadoop ?

July 12, 2021

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July 12, 2021

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Answer : The three running modes of Hadoop are as follows…

Big Data

Editor

What are the configuration parameters in a “MapReduce” program ?

July 12, 2021

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July 12, 2021

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Answer : Input location of Jobs in the distributed file system…

Big Data

Editor

What are the core components of Hadoop ?

July 12, 2021

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July 12, 2021

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Answer : Hadoop is an open source framework that is meant…

Big Data

Editor

What are the features of Hadoop ?

July 12, 2021

1 Min Read

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July 12, 2021

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Answer : Hadoop supports the storage and processing of big data…

Big Data

Editor

What is the difference between Hadoop and RDBMS ?

July 12, 2021

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July 12, 2021

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Answer : Hadoop Based on ‘Schema on Read’…

Big Data

Editor

How to recover a NameNode when it is down ?

July 12, 2021

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July 12, 2021

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Answer : Use the FsImage which is file system metadata…

Big Data

Editor

What are the Six V’s of Big Data ?

July 12, 2021

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July 12, 2021

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Answer : Volume represents the volume i.e. amount of data that is growing…

Big Data

Editor

What is fsck ?

July 12, 2021

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July 12, 2021

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Answer : Fsck stands for File System Check. This command is used…

Hadoop

Editor

Why Hadoop used for Big Data Analytics ?

July 12, 2021

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July 12, 2021

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Answer : Big data analytics is the process of examining large data…

Big Data

Editor

What are the components of HDFS and YARN ?

July 12, 2021

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July 12, 2021

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Answer : NameNode is the master node for processing metadata information…

Big Data

Editor

What are the steps to deploy a big data solution ?

July 12, 2021

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July 12, 2021

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Answer : There are three steps to deploy a Big Data …

Big Data

Editor

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Virtusa Consulting Services Pvt Ltd interview questions and answers

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