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 | |