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Hadoop Online Quiz
Following quiz provides Multiple Choice Questions (MCQs) related to Hadoop Framework. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.
Q 1 - In a Hadoop cluster, what is true for a HDFS block that is no longer available due to disk corruption or machine failure?
B - It can be replicated form its alternative locations to other live machines.
C - The namenode allows new client request to keep trying to read it.
D - The Mapreduce job process runs ignoring the block and the data stored in it.
Answer : B
Q 2 - For the frequently accessed HDFS files the blocks are cached in
A - the memory of the datanode
B - in the memory of the namenode
D - In the memory of the client application which requested the access to these files.
Answer : A
Q 3 - The property used to set the default filesystem for Hadoop in core-site.xml is-
Answer : B
Q 4 - Which of the below property gets configured on core-site.xml ?
B - Directory names to store hdfs files.
Answer : B
Q 5 - The namenode knows that the datanode is active using a mechanism known as
Answer : A
Q 6 - YARN stands for
A - Yahoo’s another resource name
B - Yet another resource negotiator
Answer : B
Q 7 - When you increase the number of files stored in HDFS, The memory required by namenode
Answer : A
Q 8 - The number of tasks a task tracker can accept depends on
A - Maximum memory available in the node
Answer : C
Q 9 - Which one of the following nodes manages other nodes?
Answer : A
Q 10 - You have loads of data that can be processed by you MRjobs. However you need the data to be available to Analysts and Scients in you organisation. What is the best format to represent the input?