Explore topic-wise MCQs in Mongodb.

This section includes 12 Mcqs, each offering curated multiple-choice questions to sharpen your Mongodb knowledge and support exam preparation. Choose a topic below to get started.

1.

What would be the maximum document size for results of mapreduce operation?

A. 15 MB
B. 16 MB
C. 17 MB
D. All of the mentioned
Answer» C. 17 MB
2.

For most aggregation operations, the ______ Pipeline provides better performance and more coherent interface.

A. Aggregate
B. Replication
C. Sharding
D. None of the mentioned
Answer» B. Replication
3.

Map-reduce uses custom __________ functions to perform the map and reduce operations.

A. Java
B. Javascript
C. JSON
D. None of the mentioned
Answer» C. JSON
4.

Which of the following database command is used for mapreduce function?

A. mapReduce
B. mapperRed
C. redmap
D. none of the mentioned
Answer» B. mapperRed
5.

FOR_MOST_AGGREGATION_OPERATIONS,_THE________PIPELINE_PROVIDES_BETTER_PERFORMANCE_AND_MORE_COHERENT_INTERFACE.?$

A. Aggregate
B. Replication
C. Sharding
D. None of the mentioned
Answer» B. Replication
6.

What_would_be_the_maximum_document_size_for_results_of_mapreduce_operation_?$

A. 15 MB
B. 16 MB
C. 17 MB
D. All of the mentioned
Answer» C. 17 MB
7.

Map-reduce uses custom __________ functions to perform the map and reduce operation?

A. Java
B. Javascript
C. JSON
D. None of the mentioned
Answer» C. JSON
8.

_________ can return the results of a map-reduce operation as a document, or may write the results to collections.

A. mapReduce
B. mapperRed
C. RedMap
D. none of the mentioned
Answer» B. mapperRed
9.

The output of the reduce function may pass through a ______ function to further condense or process the results of the aggregation.

A. finalize
B. filter
C. procedure
D. none of the mentioned
Answer» B. filter
10.

MongoDB applies the _________ phase, which collects and condenses the aggregated data.

A. map
B. reduce
C. mapper
D. all of the mentioned
Answer» C. mapper
11.

MongoDB applies the _____ phase to each input document in mapreduce.

A. map
B. reduce
C. mapper
D. all of the mentioned
Answer» B. reduce
12.

Which of the following database command is used for mapreduce function ?

A. mapReduce
B. mapperRed
C. redmap
D. none of the mentioned
Answer» B. mapperRed