hadoop bigdata questions and answers paper 755 - skillgunNote: Paper virtual numbers may be different from actual paper numbers . In the page numbers section website displaying virtual numbers .
The command "hadoop fs-test-z URI"gives the result 0 if
if the file is zero length
if the file does not exist
if the path is empty
All the above
The archive file in hadoop has the extension of
Among the following which command lists the blocks that make up each file in the system
hdfs fchk /-files -blocks.
hdfs fchk/-blocks -files.
hdfs fsck/-files -blocks.
hdfs fsck/-blocks -files.
Running start-dfs.sh results in
starting resource manager
starting namenode and datanode
Which of the following property is used to set the default file system in core-site.xml is
Command to check if hadoop is up and running is
In HDFS all the files in a directory can be merged together using
command to unarchive the already archived file in hadoop is
Zookeeper ensures that.
All the name nodes are activelyb serving the client requests.
A failover is triggered when any of the datanode fails.
Only one name node is actively serving the client requests.
All the above
Among the following which is not a schedular options available with YARN?
Which of the following command will start yarn daemons.
which of the following command moves the file indicatede by src to dest within HDFS?
what will the command rm<path> do?
Removes the file identified by the path and recursively deletes any child entries.
Removes the file identified by the path.
Retrieves all the files from the identified path.
All the above.
Among the following identify the command that shows the last 1KB of file on stdout.
which of the following command is used to verify the files in the input directory.
$HADOOP_HOME/BIN fs-ls/ input_dir/
$HADOOP_HOME/hadoop fs -ls input_dir/
$HADOOP_HOME/bin/hadoop fs -ls input_dir/
$HADOOP_HOME/bin fs -ls/hadoop input_dir/
Kills the task.
Kills the job.
Both a and b.
What is the port number for Namenode?
Portnumber for jobtracker
Tasktracker portnumber is
Among the following identify the false statement
NAS runs on a single machine.
HDFS runs on clusters of different systems.
NAS has data redundancy.
HDFS has data redundancy because of the replication protocal.
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