Select chapter



hadoop (4.papers)

Sponsored Links


  

hadoop bigdata questions and answers

Show Answer
Share Facebook gmail Twitter
Show Answer
Share Facebook gmail Twitter
Show Answer
Share Facebook gmail Twitter
Show Answer
Share Facebook gmail Twitter
5
What is the default block size?
  1. 64 MB  
  2. 16 MB    
  3. 32MB
  4. None
Show Answer
Share Facebook gmail Twitter
Show Answer
Share Facebook gmail Twitter
Show Answer
Share Facebook gmail Twitter
Show Answer
Share Facebook gmail Twitter
9
Node where Map and Reduce program runs?
  1. Slave Node  
  2. Master Node  
  3. Data Node  
  4. All
Show Answer
Share Facebook gmail Twitter
Show Answer
Share Facebook gmail Twitter
Show Answer
Share Facebook gmail Twitter
Show Answer
Share Facebook gmail Twitter
Show Answer
Share Facebook gmail Twitter
14
If a file in HDFS is smaller than the singleblock size then
  1. Occupies the entire block size   
  2. File cannot be stored
  3. can span over multiple blocks    
  4. occupies the only the size it needed not the full block
    
Show Answer
Share Facebook gmail Twitter
15
In the local disk of Name node the files which are stored persistently are
  1. Name space image,edit log and block locations
  2. Name space image and edit log
  3. edit log and block locations
  4. None
Show Answer
Share Facebook gmail Twitter
16
Which of the following requires highest bandwidth for data transfer between nodes?
  1. Nodes on the same rack in the same data center.
    
  2. Nodes in different data centers.
  3. Different nodes in the same rack.
  4. Data on the same node.
Show Answer
Share Facebook gmail Twitter
Show Answer
Share Facebook gmail Twitter
Show Answer
Share Facebook gmail Twitter
19
Identify the mechanisms how Hadoop uses to make namenode resilent to failure
  1. Take backup of filesystem metadata to a local disk and remote NFS.
  2. Store in different CPUs.
    
  3. Store the filesystem in cloud.
  4. None of the above
Show Answer
Share Facebook gmail Twitter
20
Check point node in Hadoop cluster is used to 
  1. Merges the fsimage and edit log and uploads it back to active namenode.
  2. Check which data nodes are not reachable.
    
  3. Check if the name node is active.
Show Answer
Share Facebook gmail Twitter
Read more papers :