Apache Hadoop MCQs

1. Objective

After learning to Hadoop try your hands on Apache Hadoop MCQs and get to know your learning so far. Below is some multiple choice Questions corresponding to them are the choice of answers. This quiz will help you to revise the concepts of Apache Hadoop and will build up your confidence in Hadoop. Hope these questions are helpful for you.

Apache Hadoop MCQs

Apache Hadoop MCQs

Apache Hadoop Multiple Choice Questions

All the best for the quiz! - Hadoop Quiz Part - 4

Q.1 Which of the following deal with small files issue
a. 
Hadoop Archives
b. 
Sequence files
c. HBase
d. All of the above
Q.2 Which of the following feature overcomes this single point of failure
Q.3 Which statement is true about NameNode High Availability
Q.4 In NameNode HA, when active node fails, which node takes the responsibility of active node
Q.5 What are the advantages of 3x replication schema in Hadoop
a. Fault tolerance
b. High availability
c. Reliability
d. All of the above
Q.6 What are the advantages of HDFS federation in Hadoop
a. Isolation
b.
 Namespace Scalability
c. Improves throughput
d. All of the above
Q.7 Rack Awareness improves
a. 
Data high availability and reliability
b. Performance of the cluster
c. Network bandwidth
d. All of the above
Q.8 Which property is used to enable/disable speculative execution
a.
 mapred.map.tasks.speculative.execution
b. 
mapred.reduce.tasks.speculative.execution
c. 
mapred.mapreduce.tasks.speculative.execution
Q.9 In which process duplicate task is created to improve the overall execution time
Q.10 In which mode each daemon runs on a single node but there is separate java process for each daemon
Q.11 In which mode each daemon runs on a single node as a single java process
Q.12 In which mode all daemons execute in separate nodes
Q.13 Which configuration file is used to control the HDFS replication factor?
Q.14 How to adjust the size of a distributed cache
Q.15 What is the default size of distributed cache
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2 Responses

  1. Nitin Namdev Desai says:

    I am confused about the answer of
    Q.13 Which configuration file is used to control the HDFS replication factor?

    It should be hdfs-site.xml, isn’t it?

    • DataFlair Team says:

      Hi Nitin,
      Thanks for pointing it out, it was our mistake. Yes, the correct answer is hdfs-site.xml. It seems you like our Apache Hadoop MCQ’s; you can refer to our next part of Hadoop Quiz (through the sidebar).
      Regard,
      DataFlair

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