Hadoop Quiz
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Hadoop MCQs For LinkedIn Skill Assessments.

Hadoop is a collection of open-source software utilities that provides a software framework for distributed storage and processing of big data using the MapReduce programming model.
 

Hadoop Quiz
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25 Questions

1. To optimize a Mapper, what should you perform first?
2. In a MapReduce job, where does the map() function run?
3. Where would you configure the size of a block in a Hadoop environment?
4. SQL Windowing functions are implemented in Hive using which keywords?
5. MapReduce 1.0 \_ YARN
6. State \_ between the JVMs in a MapReduce job
7. MapReduce jobs can be written in which language?
8. HQL queries produce which job types?
9. Which object can be used to distribute jars or libraries for use in MapReduce tasks?
10. To set up Hadoop workflow with synchronization of data between jobs that process tasks both on disk and in memory, use the '___' service, which is '___'.
11. To perform local aggregation of the intermediate outputs, MapReduce users can optionally specify which object?
12. To create a MapReduce job, what should be coded first?
13. In the Hadoop system, what administrative mode is used for maintenance?
14. What type of software is Hadoop Common?
15. To reference a master file for lookups during Mapping, what type of cache should be used?
16. DataNode supports which type of drives?
17. Hadoop Common is written in which language?
18. Rather than adding a Secondary Sort to a slow Reduce job, it is Hadoop best practice to perform which optimization?
19. MapReduce applications use which of these classes to report their statistics?
20. Which line of code implements a Reducer method in MapReduce 2.0?
21. What kind of storage and processing does Hadoop support?
22. HBase works with which type of schema enforcement?
23. What are the primary phases of a Reducer?
24. Which library should be used to unit test MapReduce code?
25. When implemented on a public cloud, with what does Hadoop processing interact?

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