Hadoop MCQs with answers Page - 141

Here, you will find a collection of MCQ questions on Hadoop. Go through these questions to enhance your preparation for upcoming examinations and interviews.

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A

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Q. Which feature of Hadoop ensures continued service during hardware failure?

  • (A) Data encryption
  • (B) Data compression
  • (C) Fault tolerance
  • (D) User authentication

A

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Q. Which of these is a high-level scripting platform in Hadoop?

  • (A) Pig
  • (B) Sqoop
  • (C) Mahout
  • (D) HBase

A

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Q. What is the function of 'fsimage' in Hadoop?

  • (A) Logs user activity
  • (B) Stores the file system namespace
  • (C) Stores user credentials
  • (D) Stores MapReduce output

A

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Q. Which of the following uses HDFS for storage?

  • (A) HBase
  • (B) MongoDB
  • (C) MySQL
  • (D) Redis

A

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Q. Which one is not a valid feature of Hadoop?

  • (A) Scalability
  • (B) Fault tolerance
  • (C) Low latency
  • (D) High throughput

A

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Q. Which Apache project provides a RESTful API to interact with HDFS?

  • (A) ZooKeeper
  • (B) WebHDFS
  • (C) YARN
  • (D) Spark

A

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Q. How does a client read data from HDFS?

  • (A) Through the NameNode only
  • (B) Through the DataNode only
  • (C) First contact NameNode, then read from DataNodes
  • (D) Only from Secondary NameNode

A

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Q. What is speculative execution in MapReduce?

  • (A) Running a task on the fastest node
  • (B) Running a duplicate task to finish early
  • (C) Retrying failed tasks automatically
  • (D) Compressing job output

A

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Q. Which language is Hadoop primarily written in?

  • (A) Python
  • (B) C++
  • (C) Java
  • (D) Go

A

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Q. Which command displays the contents of a file in HDFS?

  • (A) hdfs dfs -view
  • (B) hdfs dfs -cat
  • (C) hdfs dfs -open
  • (D) hdfs dfs -disp

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