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Cloudera Hadoop Administrator Certification Certification Questions and Answer (Dumps and Practice Questions)



Question : Which is the correct command to copy files from local to HDFS file systems
 : Which is the correct command to copy files from local to HDFS file systems
1. hadoop fs -copy pappu.txt pappu.txt
2. hadoop fs -copyFromPath pappu.txt pappu.txt
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4. None of the above

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Question : top and free can be used to display memory and swap information. In both applications the
memory in use includes read cache which will be released for application use before swapping begins.
 : top and free can be used to display memory and swap information. In both applications the
1. True
2. False

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Question : Which is the correct command to list all the files from current directory
   : Which is the correct command to list all the files from current directory
1. hadoop fs -ls
2. hadoop fs -list
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4. All of the above



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Related Questions


Question : YARN supports the scheduling of MapReduce job which helps short jobs to complete even when long jobs are running.
  : YARN supports the scheduling of MapReduce job which helps  short jobs to complete even when long jobs are running.
1. True
2. False





Question : YARN supports the scheduling of MapReduce job which helps reducing the memory requirement of the MapReduce job.
  : YARN supports the scheduling of MapReduce job which helps reducing the memory requirement of the MapReduce job.
1. True
2. False





Question : YARN supports the scheduling of MapReduce job which helps reducing the cores required for large MapReduce job
  : YARN supports the scheduling of MapReduce job which helps reducing the cores required for large MapReduce job
1. True
2. False





Question : yarn application -kill - (application_id) is the correct command to kill any running MapReduce job.
  : yarn application -kill - (application_id) is the correct command to kill any running MapReduce job.
1. True
2. False





Question : Which of the following schedular ensurs that certain users, groups, or production applications always get sufficient resources.
When a queue contains waiting applications, it gets at least its minimum share

  : Which of the following schedular ensurs that certain users, groups, or production applications always get sufficient resources.
1. Fair Scheduler
2. Capacity Scheduler
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4. Both 1 and 2
5. Both 2 and 3



Question :

Select the correct statement for the Fair Scheduler



  :
1. allows containers to request variable amounts of memory and schedules based on those requirements
2. If an application is given a container that it cannot use immediately due to a shortage of memory, it can reserve that container, and no other application can use it until the container is released.
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4. 1 and 2
5. 1 and 3