MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Mongodb knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A query _______ consists of a combination of query, sort, and projection specifications. |
| A. | plan |
| B. | shape |
| C. | stats |
| D. | all of the mentioned |
| Answer» C. stats | |
| 2. |
A ________ query plan has returned a threshold number of matching results. |
| A. | execution |
| B. | unordered |
| C. | ordered |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 3. |
_________ is used to view statistics about the query plan for a given query. |
| A. | db.explain() |
| B. | cursor.explain() |
| C. | cursor.explainstats() |
| D. | all of the mentioned |
| Answer» C. cursor.explainstats() | |
| 4. |
_____ can modify specific fields of an existing document or documents or replace an existing document entirely, depending on the update parameter. |
| A. | modify() |
| B. | update() |
| C. | find() |
| D. | none of the mentioned |
| Answer» C. find() | |
| 5. |
___________ is used to determine whether a query is a covered query. |
| A. | explainstats() |
| B. | explain() |
| C. | explainall() |
| D. | all of the mentioned |
| Answer» C. explainall() | |
| 6. |
AN__________QUERY_PLAN_HAS_RETURNED_A_THRESHOLD_NUMBER_OF_MATCHING_RESULTS?$ |
| A. | execution |
| B. | unordered |
| C. | ordered |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 7. |
A_query_________consists_of_a_combination_of_query,_sort,_and_projection_specifications.$ |
| A. | plan |
| B. | shape |
| C. | stats |
| D. | all of the mentioned |
| Answer» C. stats | |
| 8. |
_________ is used to view statistics about the query plan for a given query? |
| A. | db.explain() |
| B. | cursor.explain() |
| C. | cursor.explainstats() |
| D. | all of the mentioned |
| Answer» C. cursor.explainstats() | |
| 9. |
The update() method uses the _______ command, which uses the default write concern. |
| A. | find |
| B. | read |
| C. | update |
| D. | modify |
| Answer» D. modify | |
| 10. |
_____ can modify specific fields of an existing document or documents or replace an existing document entirely, depending on the update parameter. |
| A. | modify() |
| B. | update() |
| C. | find() |
| D. | none of the mentioned |
| Answer» C. find() | |
| 11. |
The ________ message is used to update a document in a collection. |
| A. | UPDATE |
| B. | OP_UPDATE |
| C. | OP_UPDATES |
| D. | All of the mentioned |
| Answer» C. OP_UPDATES | |
| 12. |
___________ is used to determine whether a query is a covered query . |
| A. | explainstats() |
| B. | explain() |
| C. | explainall() |
| D. | all of the mentioned |
| Answer» C. explainall() | |
| 13. |
Indexes are typically available in ______ or located sequentially on disk. |
| A. | RAM |
| B. | ROM |
| C. | CMOS |
| D. | None of the mentioned |
| Answer» B. ROM | |