MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 29 Mcqs, each offering curated multiple-choice questions to sharpen your Mongodb knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Index __________ does not eliminate the need for creating compound indexes. |
| A. | union |
| B. | addition |
| C. | intersection |
| D. | all of the mentioned |
| Answer» D. all of the mentioned | |
| 2. |
Before version _______ capped collections did not have an _id field. |
| A. | 2.1 |
| B. | 2.4 |
| C. | 3 |
| D. | 2.2 |
| Answer» E. | |
| 3. |
An index prefix is a subset of a ______ index, consisting of one or more keys starting from the beginning of the index. |
| A. | Hashed |
| B. | Unique |
| C. | Sparse |
| D. | Compound |
| Answer» E. | |
| 4. |
Inclusion queries use the _________ operator in MongoDB. |
| A. | $geokey |
| B. | $geoin |
| C. | $geoWithin |
| D. | All of the mentioned |
| Answer» D. All of the mentioned | |
| 5. |
Which of the following GeoJSON object is not supported in MongoDB ? |
| A. | Point |
| B. | LineString |
| C. | MultiPoint |
| D. | None of the mentioned |
| Answer» E. | |
| 6. |
Queries on ________ objects always calculate on a sphere. |
| A. | GeoBSON |
| B. | GeoJSON |
| C. | geoJSONB |
| D. | All of the mentioned |
| Answer» C. geoJSONB | |
| 7. |
MongoDB supports spherical surface calculations on legacy coordinate pairs using a _______ index |
| A. | 2dsphere |
| B. | 2d |
| C. | geoHaystack |
| D. | all of the mentioned |
| Answer» B. 2d | |
| 8. |
___________ indexes use spherical geometry to return results. |
| A. | 3sphere |
| B. | 2sphere |
| C. | 1sphere |
| D. | none of the mentioned |
| Answer» C. 1sphere | |
| 9. |
_____ indexes uses planar geometry when returning results. |
| A. | 2d |
| B. | 1d |
| C. | 3d |
| D. | All of the mentioned |
| Answer» B. 1d | |
| 10. |
________ index must exist on a field holding coordinates before using any of the geospatial query operators. |
| A. | Unique |
| B. | Geospatial |
| C. | Temporal |
| D. | All of the mentioned |
| Answer» C. Temporal | |
| 11. |
The _________ operator specifies a circle for a $geoWithin query. |
| A. | $within |
| B. | $gwithin |
| C. | $center |
| D. | All of the mentioned |
| Answer» D. All of the mentioned | |
| 12. |
The default weight is ____ for the indexed fields. |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» B. 2 | |
| 13. |
For a ______ index, the weight of an indexed field denotes the significance of the field relative to the other indexed fields in terms of the score. |
| A. | unique |
| B. | natural |
| C. | text |
| D. | all of the mentioned |
| Answer» C. text | |
| 14. |
You may not specify a unique constraint on a ______ index. |
| A. | Hashed |
| B. | Unique |
| C. | Sparse |
| D. | Compound |
| Answer» B. Unique | |
| 15. |
To force MongoDB to use a particular index for a db.collection.________ operation, specify the index with the hint() method. |
| A. | query() |
| B. | find() |
| C. | index() |
| D. | all of the mentioned |
| Answer» C. index() | |
| 16. |
The __________ operator constrains the results of a geospatial $near or $nearSphere query to the specified distance. |
| A. | $center |
| B. | $maxDistance |
| C. | $minDistance |
| D. | all of the mentioned |
| Answer» C. $minDistance | |
| 17. |
Which of the following indexes are always sparse ? |
| A. | 2dsphere |
| B. | 2d |
| C. | geoHaystack |
| D. | all of the mentioned |
| Answer» E. | |
| 18. |
Specify the ______ operator to the hint() method to prevent MongoDB from using any index |
| A. | $unique |
| B. | $natural |
| C. | $spatial |
| D. | all of the mentioned |
| Answer» C. $spatial | |
| 19. |
The $geoWithin operator uses the _______ operator to specify the GeoJSON object. |
| A. | $sphere |
| B. | $geoin |
| C. | $geometry |
| D. | All of the mentioned |
| Answer» D. All of the mentioned | |
| 20. |
If the specified polygon is _______ than a single hemisphere, the behavior of $geoWithin with the MongoDB CRS is the same as with the default CRS |
| A. | smaller |
| B. | bigger |
| C. | equal |
| D. | all of the mentioned |
| Answer» B. bigger | |
| 21. |
When used with the _____ operator, $geoWithin returns documents based on grid coordinates and does not query for GeoJSON shapes. |
| A. | $box |
| B. | $circle |
| C. | $shape |
| D. | All of the mentioned |
| Answer» B. $circle | |
| 22. |
$geoWithin replaces _______ in MongoDB 2.4. |
| A. | $withing |
| B. | $gwithin |
| C. | $within |
| D. | All of the mentioned |
| Answer» D. All of the mentioned | |
| 23. |
To query with a single-ringed GeoJSON polygon whose area is greater than a single hemisphere, the $geometry expression must specify the custom MongoDB ________ |
| A. | CRS |
| B. | CDS |
| C. | CLS |
| D. | None of the mentioned |
| Answer» B. CDS | |
| 24. |
________ is the ability of a query to narrow results using the index. |
| A. | Causality |
| B. | Cardinality |
| C. | Selectivity |
| D. | All of the mentioned |
| Answer» C. Selectivity | |
| 25. |
________ returns a document only once for a geospatial query even if the document matches the query multiple times. |
| A. | $uniqueDocs |
| B. | $unique |
| C. | $Docs |
| D. | All of the mentioned |
| Answer» B. $unique | |
| 26. |
_________ specifies a polygon for a geospatial $geoWithin query on legacy coordinate pairs. |
| A. | $rect |
| B. | $polygon |
| C. | $poly |
| D. | All of the mentioned |
| Answer» C. $poly | |
| 27. |
To avoid creating an index with a name that exceeds the index name length limit, you can pass the _____ option to the db.collection.createIndex() method. |
| A. | name |
| B. | lang |
| C. | number |
| D. | all of the mentioned |
| Answer» B. lang | |
| 28. |
Indexes do not have to fit entirely into ______ in all cases. |
| A. | ROM |
| B. | RAM |
| C. | Secondary Storage |
| D. | None of the mentioned |
| Answer» B. RAM | |
| 29. |
Only the ______ geospatial index supports the $polygon operator |
| A. | 1dsphere |
| B. | 2d |
| C. | 3d |
| D. | None of the mentioned |
| Answer» C. 3d | |