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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 | |