Explore topic-wise MCQs in Hadoop.

This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Hadoop knowledge and support exam preparation. Choose a topic below to get started.

1.

_________ is the primary interface for a user to describe a MapReduce job to the Hadoop framework for execution.

A. Map Parameters
B. JobConf
C. MemoryConf
D. None of the mentioned
Answer» C. MemoryConf
2.

__________ is a generalization of the facility provided by the MapReduce framework to collect data output by the Mapper or the Reducer.

A. Partitioner
B. OutputCollector
C. Reporter
D. All of the mentioned
Answer» C. Reporter
3.

Which of the following phases occur simultaneously?

A. Shuffle and Sort
B. Reduce and Sort
C. Shuffle and Map
D. All of the mentioned
Answer» B. Reduce and Sort
4.

The right number of reduces seems to be ____________

A. 0.9
B. 0.80
C. 0.36
D. 0.95
Answer» E.
5.

Mapper implementations are passed the JobConf for the job via the ________ method.

A. JobConfigure.configure
B. JobConfigurable.configure
C. JobConfigurable.configurable
D. None of the mentioned
Answer» C. JobConfigurable.configurable
6.

__________IS_THE_PRIMARY_INTERFACE_FOR_A_USER_TO_DESCRIBE_A_MAPREDUCE_JOB_TO_THE_HADOOP_FRAMEWORK_FOR_EXECUTION.?$

A. Map Parameters
B. JobConf
C. MemoryConf
D. None of the mentioned
Answer» C. MemoryConf
7.

__________ is a generalization of the facility provided by the MapReduce framework to collect data output by the Mapper or the Reduce?

A. Partitioner
B. OutputCollector
C. Reporter
D. All of the mentioned
Answer» C. Reporter
8.

Mapper and Reducer implementations can use the ________ to report progress or just indicate that they are alive.

A. Partitioner
B. OutputCollector
C. Reporter
D. All of the mentioned
Answer» D. All of the mentioned
9.

Which of the following phases occur simultaneously ?

A. Shuffle and Sort
B. Reduce and Sort
C. Shuffle and Map
D. All of the mentioned
Answer» B. Reduce and Sort
10.

The output of the _______ is not sorted in the Mapreduce framework for Hadoop.

A. Mapper
B. Cascader
C. Scalding
D. None of the mentioned
Answer» E.
11.

The right number of reduces seems to be :

A. 0.90
B. 0.80
C. 0.36
D. 0.95
Answer» E.
12.

Input to the _______ is the sorted output of the mappers.

A. Reducer
B. Mapper
C. Shuffle
D. All of the mentioned
Answer» B. Mapper
13.

Mapper implementations are passed the JobConf for the job via the ________ method

A. JobConfigure.configure
B. JobConfigurable.configure
C. JobConfigurable.configureable
D. None of the mentioned
Answer» C. JobConfigurable.configureable