Hadoop MCQs with answers Page - 145

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

Admin • 833.24K Points
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Q. What provides fault tolerance in Hadoop?

  • (A) MapReduce
  • (B) Replication factor
  • (C) YARN
  • (D) Hive

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Admin • 833.24K Points
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Q. What happens if NameNode fails in Hadoop 1.x?

  • (A) Cluster continues normally
  • (B) Only writes stop
  • (C) Entire cluster becomes unavailable
  • (D) Only one node fails

A

Admin • 833.24K Points
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Q. Which component executes tasks in YARN?

  • (A) ResourceManager
  • (B) NodeManager
  • (C) NameNode
  • (D) JobTracker

A

Admin • 833.24K Points
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Q. What is the purpose of a Combiner?

  • (A) Final aggregation
  • (B) Intermediate optimization
  • (C) Data storage
  • (D) Resource allocation

A

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Q. What is the purpose of fsimage in HDFS?

  • (A) Stores actual data blocks
  • (B) Stores metadata snapshot
  • (C) Stores logs
  • (D) Stores job history

A

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Q. What is edit log in HDFS?

  • (A) Stores user data
  • (B) Stores metadata changes
  • (C) Stores job output
  • (D) Stores logs of DataNode

A

Admin • 833.24K Points
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Q. Which daemon runs on slave nodes?

  • (A) NameNode
  • (B) ResourceManager
  • (C) DataNode
  • (D) JobTracker

A

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Q. Which Hadoop version introduced YARN?

  • (A) Hadoop 1.x
  • (B) Hadoop 2.x
  • (C) Hadoop 0.20
  • (D) Hadoop 3.x

A

Admin • 833.24K Points
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Q. What is the purpose of block scanner in DataNode?

  • (A) Reads files
  • (B) Verifies data integrity
  • (C) Transfers files
  • (D) Schedules jobs

A

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Q. Which component is responsible for splitting input data?

  • (A) Mapper
  • (B) InputFormat
  • (C) Reducer
  • (D) Combiner

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