The need for data replication can arise in various scenarios like
All Options are Correct
Well Done.
replication factor ischanged
datanode goes down
data blocks get corrupted
Category: Cloud Computing
Which of the following is the correct statement?
Which of the following is the correct statement?
datanode is the slave/worker node and holds the user data in the form ofdata blocks
Well Done.
each incoming file is broken into 32 mb by default
namenode stores user data in the form of data blocks
All Options are Correct
What is HDFS Block in Hadoop?
What is HDFS Block in Hadoop?
it is the physicalrepresentation of data
Well Done.
it is the logicalrepresentation of data
Batch Processing
All Options are Correct
What is the default size of HDFS Data Block?
What is the default size of HDFS Data Block?
128mb
Well Done.
64mb
32mb
16mb
What is default replication factor?
What is default replication factor?
3
Well Done.
5
2
1
Which among the following is the correct statement
Which among the following is the correct statement
namenode stores metadata
Well Done.
datanode manage file system namespace
name node stores actual data
All Options are Correct
Which utility is used for checking the health of an HDFS file system?
Which utility is used for checking the health of an HDFS file system?
fsck
Well Done.
fchk
fsch
fcks
Which among the following command is used to copy a directory from one node to another in HDFS?
Which among the following command is used to copy a directory from onenode to another in HDFS?
distcp
Well Done.
dcp
rcp
drcp
What is HDFS?
What is HDFS?
storage layer
Well Done.
batch processing engine
resource management layer
All Options are Correct
The source of HDFS architecture in Hadoop originated as
The source of HDFS architecture in Hadoop originated as
google distributed filesystem
Well Done.
yahoo distributed filesystem
facebook distributed filesystem
amazon s3 storage