
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 - Which of the following is true for disk drives over a period of time?
A - Data Seek time is improving faster than data transfer rate.
B - Data Seek time is improving more slowly than data transfer rate.
C - Data Seek time and data transfer rate are both increasing proportionately.
D - Only the storage capacity is increasing without increase in data transfer rate.
Answer : B
Q 2 - In the local disk of the namenode the files which are stored persistently are −
A - namespace image and edit log
B - block locations and namespace image
Answer : A
Q 3 - The following is not permitted on HDFS files
Answer : D
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 - The command hadoop fs -test -z URI gives the result 0 if
Answer : D
Q 7 - The decommission feature in hadoop is used for
A - Decommissioning the namenode
B - Decommissioning the data nodes
Answer : B
Q 8 - When a jobTracker schedules a task is first looks for
A - A node with empty slot in the same rack as datanode
B - Any node on the same rack as the datanode
Answer : A
Q 9 - What is distributed cache?
C - The distributed cache is a component that caches java objects.
Answer : B
Q 10 - The org.apache.hadoop.io.Writable interface declares which two methods? (Choose 2 answers.)
public void readFields(DataInput).
public void read(DataInput).
public void writeFields(DataOutput).
public void write(DataOutput).