____ is the slave/worker node and holds the user data in the form of Data Blocks.
DataNode
Excellent ! Your Answer is Correct.
NameNode
Data block
Replication
Tag: Hadoop MCQs
A ___ node acts as the Slave and is responsible for executing a Task assigned to it by the jobTracker.
A ___ node acts as the Slave and is responsible for executing a Task assigned to it by the jobTracker.
TaskTracker
Excellent ! Your Answer is Correct.
Mapper
MapReduce
jobTracker
The need for data replication can arise in various scenarios like ___
The need for data replication can arise in various scenarios like ___
All Options are Correct
Excellent ! Your Answer is Correct.
Replication Factor is changed
DataNode goes down
Data Blocks get corrupted
NameNode is used when the Primary NameNode goes down
NameNode is used when the Primary NameNode goes down
Secondary
Excellent ! Your Answer is Correct.
Data
Rack
None of the Option is Correct
___ is the most popular high-level Java API in Hadoop Ecosystem
___ is the most popular high-level Java API in Hadoop Ecosystem
Cascading
Excellent ! Your Answer is Correct.
Cascalog
Hcatalog
Scalding
_____ serves as the master and there is only one NadeNode per Cluster.
_____ serves as the master and there is only one NadeNode per Cluster.
NameNode
Excellent ! Your Answer is Correct.
Data Node
Data block
Replication
Hive also support custom extensions written in ___
Hive also support custom extensions written in ___
Java
Excellent ! Your Answer is Correct.
C#
C
C++
____ hides the limitations of Java behind a powerful and concise clojure API for cascading.
____ hides the limitations of Java behind a powerful and concise clojure API for cascading.
Cascalog
Excellent ! Your Answer is Correct.
Hcatalog
Scalding
All Options are Correct
Point out the correct statement.
Point out the correct statement.
Hive is not a relational database, but a query engine that supports the parts of SQL specific to querying data
Excellent ! Your Answer is Correct.
Hive is a relational database with SQL Support
Pig is a relational database with SQL support
All Options are Correct
____ is a platform for Constructing data flows for extract, transform, and load (ETL) processing and analysis of large datasets.
____ is a platform for Constructing data flows for extract, transform, and load (ETL) processing and analysis of large datasets.
Pig
Excellent ! Your Answer is Correct.
Hive
Oozie
Pig Latin