 
			 
			MCQOPTIONS
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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 | |