Hadoop MCQs with answers Page - 17

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Q. What is the role of the Secondary NameNode in Hadoop?

  • (A) Manages computation resources
  • (B) Store a backup of the entire HDFS metadata
  • (C) Failover for the NameNode
  • (D) Manages ZooKeeper configurations

A

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Q. What is the function of Hadoop MapReduce in the architecture?

  • (A) Storage layer
  • (B) Data processing
  • (C) Resource management
  • (D) Workflow automation

A

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Q. In Hadoop, what is the purpose of the ResourceManager in YARN?

  • (A) Manage storage layer
  • (B) Manage computation resources
  • (C) Execute MapReduce jobs
  • (D) Manage Hadoop ecosystem tools

A

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Q. Which Hadoop component is responsible for task coordination and scheduling?

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

A

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Q. What is the significance of the Hadoop Distributed File System (HDFS) in the architecture?

  • (A) Data storage and management
  • (B) Resource management
  • (C) Data processing
  • (D) Workflow automation

A

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Q. . . . . . . . . class allows the Map/Reduce framework to partition the map outputs based on certain key fields, not the whole keys.

  • (A) KeyFieldPartitioner
  • (B) KeyFieldBasedPartitioner
  • (C) KeyFieldBased
  • (D) None of the mentioned

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Q. Point out the wrong statement.

  • (A) A MapReduce job usually splits the input data-set into independent chunks which are processed by the map tasks in a completely parallel manner
  • (B) The MapReduce framework operates exclusively on <key, value> pairs
  • (C) Applications typically implement the Mapper and Reducer interfaces to provide the map and reduce methods
  • (D) None of the mentioned

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Q. . . . . . . . . is the primary interface for a user to describe a MapReduce job to the Hadoop framework for execution.

  • (A) Map Parameters
  • (B) JobConf
  • (C) MemoryConf
  • (D) None of the mentioned

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Q. Which of the following Hadoop streaming command option parameter is required?

  • (A) output directoryname
  • (B) mapper executable
  • (C) input directoryname
  • (D) all of the mentioned

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Q. . . . . . . . . maps input key/value pairs to a set of intermediate key/value pairs.

  • (A) Mapper
  • (B) Reducer
  • (C) Both Mapper and Reducer
  • (D) None of the mentioned

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