MCQOPTIONS
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MCQOPTIONS
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. |
$allElementsTrue returns true if no element of a set evaluates to ____________ |
| A. | false |
| B. | true |
| C. | 0 |
| D. | 1 |
| Answer» B. true | |
| 2. |
_______ accepts only single argument expression. |
| A. | $setIsSubset |
| B. | $bool |
| C. | $anyElementTrue |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 3. |
$setIsSubset returns _______ if all elements of the first set appear in the second set, including when the first set equals the second set. |
| A. | Null |
| B. | True |
| C. | False |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 4. |
Which of the following accepts any number of argument expression? |
| A. | $setIntersection |
| B. | $setDifference |
| C. | $setEquals |
| D. | None of the mentioned |
| Answer» B. $setDifference | |
| 5. |
________ACCEPTS_ONLY_SINGLE_ARGUMENT_EXPRESSION.?$ |
| A. | $setIsSubset |
| B. | $bool |
| C. | $anyElementTrue |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 6. |
allElementsTrue returns true if no element of a set evaluates to :$ |
| A. | false |
| B. | true |
| C. | 0 |
| D. | 1 |
| Answer» B. true | |
| 7. |
setIsSubset returns _______ if all elements of the first set appear in the second set, including when the first set equals the second set? |
| A. | Null |
| B. | True |
| C. | False |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 8. |
Which of the following performs a relative complement of the second set relative to the first? |
| A. | $setIntersection |
| B. | $setDifference |
| C. | $setEquals |
| D. | $setUnion |
| Answer» B. $setDifference | |
| 9. |
________ returns a set with elements that appear in any of the input sets. |
| A. | $setIntersection |
| B. | $setDifference |
| C. | $setEquals |
| D. | $setUnion |
| Answer» E. | |
| 10. |
Which of the following accepts any number of argument expression ? |
| A. | $setIntersection |
| B. | $setDifference |
| C. | $setEquals |
| D. | None of the mentioned |
| Answer» B. $setDifference | |
| 11. |
________ returns true if the input sets have the same distinct elements. |
| A. | $setUnion |
| B. | $setDifference |
| C. | $setEquals |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 12. |
______ expressions ignores the duplicate entries in each input array and the order of the elements. |
| A. | set |
| B. | boolean |
| C. | aggregate |
| D. | none of the mentioned |
| Answer» B. boolean | |