Hadoop Quiz
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Avg score: 18% • Most missed: “In the Hadoop system, what administrative mode is used for maintenance?”

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. In the Hadoop system, what administrative mode is used for maintenance?
2. If no reduction is desired, you should set the numbers of \_ tasks to zero
3. Which type of Hadoop node executes file system namespace operations like opening, closing, and renaming files and directories?
4. HQL queries produce which job types?
5. To what does the Mapper map input key/value pairs?
6. To optimize a Mapper, what should you perform first?
7. What kind of storage and processing does Hadoop support?
8. SQL Windowing functions are implemented in Hive using which keywords?
9. HDFS file are of what type?
10. Where would you configure the size of a block in a Hadoop environment?
11. Hadoop Common is written in which language?
12. To get the total number of mapped input records in a map job task, you should review the value of which counter?
13. Which command imports data to Hadoop from a MySQL database?
14. Which feature is used to roll back a corrupted HDFS instance to a previously known good point in time?
15. What are the primary phases of a Reducer?
16. When implemented on a public cloud, with what does Hadoop processing interact?
17. In MapReduce, '\_' have \_
18. MapReduce applications use which of these classes to report their statistics?
19. A distributed cache file path can originate from what location?
20. To reference a master file for lookups during Mapping, what type of cache should be used?
21. For high availability, use multiple nodes of which type?
22. In a MapReduce job, which phase runs after the Map phase completes?
23. Suppose you are trying to finish a Pig script that converts text in the input string to uppercase. What code is needed on line 2 below?
1 data = LOAD '/user/hue/pig/examples/data/midsummer.txt'...
2
24. To connect Hadoop to AWS S3, which client should you use?
25. Which file system does Hadoop use for storage?

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