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Free HADOOP-PR000007 Exam Braindumps (page: 3)

Page 2 of 12
PDF with 44 Questions

Which HDFS command uploads a local file X into an existing HDFS directory Y?

  1. hadoop scp X Y
  2. hadoop fs -localPut X Y
  3. hadoop fs-put X Y
  4. hadoop fs -get X Y

Answer(s): C



What does the following WebHDFS command do?
Curl -1 -L "http://host:port/webhdfs/v1/foo/bar?op=OPEN"

  1. Make a directory /foo/bar
  2. Read a file /foo/bar
  3. List a directory /foo
  4. Delete a directory /foo/bar

Answer(s): B



In Hadoop 2.0, which TWO of the following processes work together to provide automatic failover of the NameNode? Choose 2 answers

  1. ZKFailoverController
  2. ZooKeeper
  3. QuorumManager
  4. JournalNode

Answer(s): B,C



Which one of the following statements is FALSE regarding the communication between DataNodes and a federation of NameNodes in Hadoop 2.0?

  1. Each DataNode receives commands from one designated master NameNode.
  2. DataNodes send periodic heartbeats to all the NameNodes.
  3. Each DataNode registers with all the NameNodes.
  4. DataNodes send periodic block reports to all the NameNodes.

Answer(s): A






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