ZS Associates interview questions and answers

20 Articles

Given a list of numbers ( fixed list) Now given any other list, how can you efficiently find out if there is any element in the second list that is an element of the first list (fixed list) ?

July 12, 2021

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July 12, 2021

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Answer : In this method, we store all elements of second array in a hash table….

C++

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

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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

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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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ZS Associates interview questions and answers

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