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hadoop (4.papers)

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hadoop bigdata interview questions and answers

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3
Hadoop  MapReduce is used to?
  1. Parallel processing of large datasets
  2. Provides High aggregate 
    bandwidth across the cluster
  3. Contains necessary Javafiles 
    and scripts required tostart hadoop
  4. job scheduling and cluster 
    management
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5
The blocks of HDFS files which are frequently accessed are cached in
  1. memory of client application
  2. memory of namenode
  3. memory of datanode
  4. All of the above
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10
The amount of memory needed for the secondary name node is
  1. Similar to that of primary node
  2. Half of the primary node
  3. Double of primary node
  4. Depends on the number of 
    number of data nodes to be handeled
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12
Which type of data is present in structured data?
  1. XML data     
  2. Word,PDF,Text     
  3. Relational data   
  4. All
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13
Which type of data is present in Semistructured data?
  1. Word,PDF,Text   
  2. XML data    
  3. Relational data  
  4. None
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14
Which type of data is present in Unstructured data?
  1. Word,PDF,Text    
  2. Relational data   
  3. XML data     
  4. None
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17
The master in cluster-node?
  1. Task tracker    
  2. job tracker   
  3. both a,b    
  4. none
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18
Which is the slave in cluster-node?
  1. Tasktracker
  2. job tracker   
  3. None
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19
master/slave architecture is used by?
  1. hadoop common  
  2. Hadoop yarn    
  3. Hadoop Mapreduce   
  4. HDFS
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