MCQOPTIONS
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MCQOPTIONS
This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Mongodb knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
__________ take as input a single expression, evaluating the expression once for each input document, and maintain their state for the group of documents. |
| A. | Computer |
| B. | Monitors |
| C. | Accumulators |
| D. | Performoner |
| Answer» D. Performoner | |
| 2. |
___________ returns either the non-null result of the first expression. |
| A. | $Null |
| B. | $ifNull |
| C. | $ElseNull |
| D. | None of the mentioned |
| Answer» C. $ElseNull | |
| 3. |
_______ result encompasses instances of undefined values or missing fields. |
| A. | Number |
| B. | String |
| C. | Null |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 4. |
__________ returns the date as a formatted string. |
| A. | $toString |
| B. | $dateToString |
| C. | $letString |
| D. | None of the mentioned |
| Answer» C. $letString | |
| 5. |
Which of the following returns the hour for a date as a number between 0 and 23? |
| A. | $minute |
| B. | $hour |
| C. | $seconds |
| D. | All of the mentioned |
| Answer» C. $seconds | |
| 6. |
Which of the following returns year for particular date? |
| A. | $year |
| B. | $yearday |
| C. | $syearofmonth |
| D. | None of the mentioned |
| Answer» B. $yearday | |
| 7. |
__________ returns the day of the year for a date as a number between 1 and 366. |
| A. | $dayofWeekend |
| B. | $dayOfWeek |
| C. | $dayOfYear |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 8. |
$dayOfMonth returns the day of the month for a date as a number between ________________ |
| A. | 1 and 31 |
| B. | 1 and 30 |
| C. | 1 and 28 |
| D. | None of the mentioned |
| Answer» B. 1 and 30 | |