Free HADOOP-PR000007 Exam Braindumps (page: 4)

Page 3 of 12

What is the term for the process of moving map outputs to the reducers?

  1. Reducing
  2. Combining
  3. Partitioning
  4. Shuffling and sorting

Answer(s): D



Which one of the following statements is true regarding a MapReduce job?

  1. The job's Partitioner shuffles and sorts all (key.value) pairs and sends the output to all reducers
  2. The default Hash Partitioner sends key value pairs with the same key to the same Reducer
  3. The reduce method is invoked once for each unique value
  4. The Mapper must sort its output of (key.value) pairs in descending order based on value

Answer(s): A



What are the TWO main components of the YARN ResourceManager process? Choose 2 answers

  1. Job Tracker
  2. Task Tracker
  3. Scheduler
  4. Applications Manager

Answer(s): C,D



Which one of the following statements describes the relationship between the NodeManager and the ApplicationMaster?

  1. The ApplicationMaster starts the NodeManager in a Container
  2. The NodeManager requests resources from the ApplicationMaster
  3. The ApplicationMaster starts the NodeManager outside of a Container
  4. The NodeManager creates an instance of the ApplicationMaster

Answer(s): D






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