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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 - A file in HDFS that is smaller than a single block size
B - Occupies the full block's size.
Answer : C
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 - Which scenario demands highest bandwidth for data transfer between nodes in Hadoop?
A - Different nodes on the same rack
B - Nodes on different racks in the same data center.
Answer : C
Q 5 - The namenode knows that the datanode is active using a mechanism known as
Answer : A
Q 6 - The fully distributed mode of installation(without virtualization) needs a minimum of
Answer : A
Q 7 - The comman used to copy a directory form one node to another in HDFS is
Answer : D
Q 8 - In a HDFS system with block size 64MB we store a file which is less than 64MB. Which of the following is true?
A - The file will consume 64MB
B - The file will consume more than 64MB
Answer : C
Q 9 - Which technology is used to import and export data in Hadoop?
Answer : C
Q 10 - Which one of the following statements is true regarding <key,value> pairs of a MapReduce job?
A - A key class must implement Writable.
B - A key class must implement WritableComparable.