Hadoop MCQ For Freshers & Experienced

  • Question 1) The hadoop frame work is written in
  • Question 2) What is the full form of HDFS?
  • Question 3) Which technologies is a document store database?
  • Question 4) When a file in HDFS is deleted by a user
  • Question 5) Which of the following deal with small files issue?
  • Question 6) Which of the following feature overcomes this single point of failure?
  • Question 7) Choose the right advantage of 3x replication schema in Hadoop?
  • Question 8) Select the default size of distributed cache?
  • Question 9) InputFormat class calls the ________ function and computes splits for each file and then sends them to the jobtracker.
  • Question 10) Select the correct parameter to describes destination directory which would contain the archive ?
  • Question 11) Select the upper limit for counters of a Map Reduce job?
  • Question 12) Identify the incorrect statement?
  • Question 13) Hadoop is open source.
  • Sharad Jaiswal
  • 09th Mar, 2020
  • 956 Followers

Hadoop MCQ
Updated ON

09th Mar, 2020

No. of Questions

25

Posted In

MCQ

Author

Sharad Jaiswal

Q1. The hadoop frame work is written in

  • C++
  • Python
  • Java
  • GO
View Answer
The hadoop frame work is written in Java.

Q2. What is the full form of HDFS?

  • Highly distributed file shell
  • Hadoop directed file system
  • Hadoop distributed file system
  • Highly distributed file system.
View Answer
The full form of HDFS is hadoop distributed file system.

Q3. Which technologies is a document store database?

  • Cassandra
  • CouchDB
  • HBase
  • Hive
View Answer
CouchDB technologies is a document store database.

Q4. When a file in HDFS is deleted by a user

  • It is lost forever
  • It goes to trash if configured.
  • File sin HDFS cannot be deleted
  • It becomes hidden from the user but stays in the file system
View Answer
When a file in HDFS is deleted by a userthen it goes to trash if configured.

Q5. Which of the following deal with small files issue?

  • Hadoop archives
  • HBase
  • Sequence files
  • All of the above
View Answer
All of the above are the deal with files issue.

Q6. Which of the following feature overcomes this single point of failure?

  • HDFS federation
  • Erasure coding
  • High availability
  • None of these
View Answer
Erasure coding feature overcomes this single point of failure.

Q7. Choose the right advantage of 3x replication schema in Hadoop?

  • Fault tolerance
  • Reliability
  • High availability
  • All of the above
View Answer
All of the above are the right advantage of 3x replication schema in Hadoop.

Q8. Select the default size of distributed cache?

  • 10 GB
  • 15 GB
  • 13 GB
  • 11 GB
View Answer
The default size of distributed cache is 10 GB.

Q9. InputFormat class calls the ________ function and computes splits for each file and then sends them to the jobtracker.

  • getSplits
  • gets
  • puts
  • None of these
View Answer
InputFormat class calls the getSplits function and computes splits for each file and then sends them to the jobtracker.

Q10. Select the correct parameter to describes destination directory which would contain the archive ?

  • archiveName
  • destination
  • source
  • None of these
View Answer
Destination is correct parameter to describes destination directory which would contain the archive.

Q11. Select the upper limit for counters of a Map Reduce job?

  • ~50
  • ~150
  • ~5s
  • ~15
View Answer
~50 is the upper limit for counters of a Map Reduce job.

Q12. Identify the incorrect statement?

  • All the znodes are prefixed using the default /hbase location
  • The znodes that you’ll most often see are the ones that coordinate operations like Region Assignment
  • ZooKeeper provides an interactive shell that allows you to explore the ZooKeeper state
  • All of the above
View Answer
All of the above are the incorrect statements.

Q13. Hadoop is open source.

  • True only for Apache Hadoop
  • True only for Apache and Cloudera Hadoop.
  • Always True
  • Always False
View Answer
True only for Apache Hadoop.

Q14. Which one of the following stores data?

  • Master node
  • Name node
  • Data node
  • None of these
View Answer
Data node is stores data.

Q15. What do you mean by data locality feature in Hadoop?

  • Co-locate the data with the computing nodes.
  • Store the same data across multiple nodes.
  • Distribute the data across multiple nodes.
  • Relocate the data from one node to another.
View Answer
The data locality feature in Hadoop means co-locate the data with the computing nodes.

Q16. Which of the following isn't a scheduler options available with YARN?

  • Fair scheduler
  • Capacity scheduler
  • Optimal Scheduler
  • FIFO scheduler
View Answer
Optimal Scheduler isn't a scheduler options available with YARN.

Q17. Job tracker runs on

  • Namenode
  • Secondary datanode
  • Datanode
  • Secondary namenode
View Answer
Job tracker runs on Namenode.

Q18. What is the role of journal node?

  • Report the edit log information of the blocks in the data node.
  • Report the location of the blocks in a data node
  • Report the Schedules when the jobs are going to run
  • Report the activity of various components handled by resource manager
View Answer
Report the edit log information of the blocks in the data node.

Q19. What is Hive used as?

  • MapReduce wrapper
  • Hadoop query engine
  • Hadoop SQL interface
  • All of the above
View Answer
Hive used as all of the above.

Q20. Choose the core component of Hadoop?

  • Map Reduce
  • HDFS
  • Both 1 and 2
  • None of these
View Answer
Both 1 and 2 are the core component of Hadoop.

Q21. Which of the following critical feature of big data?

  • Volume
  • Velocity
  • Variety
  • All of the above
View Answer
All of the above are the critical feature of big data.

Q22. Facebook Tackles Big Data With _______ based on Hadoop.

  • roject Bid
  • Project Prism
  • Prism
  • Project Data
View Answer
Facebook Tackles Big Data With Project Prism based on Hadoop.

Q23. Which of the following license is Hadoop distributed under ?

  • Middleware
  • Apache License 2.0
  • Shareware
  • Mozilla
View Answer
Apache License 2.0 .

Q24. Which of the following genres does Hadoop produce ?

  • Distributed file system
  • JSP
  • JAX-RS
  • Java Message Service
View Answer
Distributed file system genres does Hadoop produce.

Q25. Hive also support custom extensions written in ___________ .

  • C
  • Java
  • C#
  • C++
View Answer
Hive also support custom extensions written in Java.

About Author :

  • Author of Hadoop MCQ

    Sharad Jaiswal

    Sharad Jaiswal is Sr. Web Developer from Noida area. He have rich experience in PHP, Angular Js, React, javascript and Node .If you any query or project on these programming you can drop your enquiry in comment section.

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