Free MongoDB Developer Exam Practice Test

Attempt MongoDB Developer practice test questions and test your skills. This free MongoDB Exam Prep material simulates the actual certification exam.

  • 60 Questions,
  • 120 Minutes
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Instructions:

1. This is a FREE test and can be attempted multiple times. But it is recommended to take the test when you are ready for best practice experience.

2. Test Duration: 120 Minutes

3. Number of questions: 60 Multiple Choice Questions

4. Each question has multiple options out of which one or more may be correct

5. You can pause the test in between and you are allowed to re-take the test later. Your test will resume from where you left, but the test time will be reduced by the amount of time you’hv taken in the previous attempt.

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1. A collection in MongoDB is a group of:
2. Select the correct query to find all the users whose age is greater than 18.
3. Select the correct query to isplay user age in the descending order.
4. You want to return maximum 5 matching documents that will return with only the _id, name, and address fields. Which of the following queries will you use?
5. What is a projection in MongoDB queries?
6. Which among the following is the way to access the different documents in the result set?
7. What is the maximum size of a document in the MongoDB?
8. Which among following is not a supported index type in MongoDB?
9. Which among the following is an example of compound index in MongoDB?
10. Which of the following commands will you use to view the query plan of the given query?
11. What is the name of the process that routes the read request to specific shard based on the specified shard key?
12. What is the name of the process that keeps the metadata of a sharded cluster?
13. In the replica set, by default, MongoDB always reads data from a replica set's:
14. Which among the following are the valid use cases to specify read preference mode?
15. Which of the following statements is correct about an insert operation?
16. Which is the correct query to update multiple documents in the "users" collection?
17. Which among the following is the example of an upsert operation in MongoDB?
18. What is the default write concern in MongoDB?
19. In a replica set, all write operations go to the set's primary that applies the write operation and then records the operations in a file called:
20. What is the minimum and maximum size of oplog in 64-bit Linux system?
21. What is the name of default storage engine in MongoDB?
22. Which of the following examples select all documents in the inventory collection where the value of the type field is either 'food' or 'snacks'?
23. Which of the following commands will you use to remove multiple documents whose type field value is "Book"?
24. What is the name of the specification to store and retrieve files that exceed the BSON-document size limit of 16MB?
25. In MongoDB, document size cannot be more than 16 MB because:
26. ObjectId is a 12-byte BSON type, in which the last 3 bytes represent:
27. Which among following data types is supported by BSON and not in JSON?
28. Which of the following is a utility of MongoDB used for taking backups?
29. Which of the following commands captures and returns the counts of database operations by type, such as insert, query, update, and delete?
30. Which of the following command queries the amount of storage used, the quantity of data contained in the database, object, collection, and index counters?
31. Which among the following command returns an overview of your replica set's status?
32. Which of the following monitoring tools can you install and configure to monitor a MongoDB cluster?
33. Which of the following statement is true about a capped collection?
34. Which of the following syntax is used converting a non-capped collection to a capped collection?
35. Which of the following is the recommended step to optimize query performance?
36. What is Journaling in MongoDB?
37. Which of the following are a supported authentication mechanism in MongoDB?
38. Which of the following methods are supported in MongoDB for performing aggregation operations?
39. Which of following statements is true about aggregation pipeline MongoDB?
40. Which of the following statements is correct about MapReduce operations in MongoDB?
41. Which of the following statements is correct about mongoose in MongoDB?
42. Which of the following syntax is used for retrieving documents in MongoDB using Java code?
43. Which of the following syntax is used for updating a collection in MongoDB using Java code?
44. Which among the following syntax is used to delete a collection in MongoDB using Java code?
45. Which among the following syntax is used to create a reference for "Test" collection in Java?
46. What kind of database is MongoDB?
47. A collection and a document in MongoDB is equivalent to which of the SQL concepts respectively?
48. Which of the following statements is correct about MongoDB?
49. Which of the following is a valid MongoDB JSON document?
50. Which of the following statements is the correct explanation of MongoDB processes?
51. Consider collection posts which has the fields: _id, post_text, post_author, post_timestamp, post_tags etc. Which of the following query retrieves ONLY the key named post_text from the first document retrieved?
52. Which of the following statements is incorrect about the find and findOne operations in MongoDB?
53. In a collection containing 100 post documents, what purpose does the db.posts.find().skip(5).limit(5) command serve?
54. Which of the following verbosity mode is not supported by the MongoDB explain() method?
55. In which default mode does the explain() command run?
56. Which of the following tags in a replica set configuration specify the operations to be read from the node with the least network latency?
57. How long does it take for MongDB writes to be written to the journal?
58. Which of the following statements is true about sharding?
59. What is the maximum size of a MongoDB document?
60. What is the maximum size of Index Key Limit and Number of Indexes per collection?
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  • PMP, PMI, PMBOK, CAPM, PgMP, PfMP, ACP, PBA, RMP, SP, and OPM3 are registered marks of the Project Management Institute, Inc.

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