MCQOPTIONS
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MCQOPTIONS
This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your Mongodb knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following key is used to denote uniqueness in the collection? |
| A. | _id |
| B. | id |
| C. | id_ |
| D. | none of the mentioned |
| Answer» B. id | |
| 2. |
To iterate the cursor and return more documents, type _________ in the mongo shell. |
| A. | cursor |
| B. | it |
| C. | next |
| D. | none of the mentioned |
| Answer» C. next | |
| 3. |
The mongo shell loads and parses the ___________ file on startup. |
| A. | mongo.js |
| B. | mongoc.js |
| C. | mongorc.js |
| D. | all of the mentioned |
| Answer» D. all of the mentioned | |
| 4. |
Which of the following statement will insert 400 documents in to the testData collection? |
| A. | insertData("test", "testData", 200) |
| B. | insertData("test", "testData", 400) |
| C. | insertData("test", "testData", 600) |
| D. | all of the mentioned |
| Answer» C. insertData("test", "testData", 600) | |
| 5. |
_id is a ________ bytes hexadecimal number which assures the uniqueness of every document. |
| A. | 13 |
| B. | 16 |
| C. | 12 |
| D. | 10 |
| Answer» D. 10 | |
| 6. |
Which of the following method returns a cursor? |
| A. | find |
| B. | sort |
| C. | skip |
| D. | all of the mentioned |
| Answer» B. sort | |
| 7. |
Which of the following method returns a cursor ? |
| A. | find |
| B. | sort |
| C. | skip |
| D. | all of the mentioned |
| Answer» D. all of the mentioned | |