This online quiz is based upon Hadoop HDFS (Hadoop Distributed File System). This Hadoop HDFS Online Quiz will help you a lot to revise your concepts.
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The source of HDFS architecture in Hadoop originated as
What is HDFS?
Which among the following command is used to copy a directory from one node to another in HDFS?
Which utility is used for checking the health of an HDFS file system?
Which among the following is the correct statement
What is default replication factor?
The namenode knows that the data node is active using a mechanism known as
What is the default size of HDFS Data Block?
What is HDFS Block in Hadoop?
Which of the following is the correct statement?
The need for data replication can arise in various scenarios like
A file in HDFS that is smaller than a single block size
Which among the following are the duties of the NameNodes
If the IP address or hostname of a data node changes
For the frequently accessed HDFS files the blocks are cached in
Which scenario demands highest bandwidth for data transfer between nodes
When a client contacts the namenode for accessing a file, the namenode responds with
In HDFS the files cannot be
Which among the following is the duties of the Data Nodes
NameNode and DataNode do communicate using
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Tags: Aapche HadoopHadoop HDFSHadoop HDFS Quizhadoop tutorialHDFS MCQsHDFS Online Quiz
Good to refresh BigData Concepts
Can you explain Q 13. Secondary namenode stores the fsimage in persistent storage. So why cant we recover it if namenode fails?
Very nice to take this quiz.. Thank you so much Data Flair
Hi Saroja,
We are pleased with your review in HDFS Quiz. Check out the other parts of HDFS Quiz, you will learn many new things.
All the best.
Default size of hdfs block is
64mb in hadoop 1.x
128mb in hadoop 2.x
Q.12 A file in HDFS that is smaller than a single block size,
If it doesnt take full block then in remaining empty part of the same block, will other file can use that empty part of same block??