MongoDB Developer Interview Questions & Answers

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MongoDB Developer is an IT professional specialized in programming and developing applications and software using Mongo tool.

Whether you're a job seeker preparing to be interviewed for the role of MongoDB Developer or an employer preparing to interview candidates for MongoDB Developer position, these MongoDB Developer interview questions will help you prepare yourself for the job interview session.

MongoDB Developer Interview Questions

Below are a list of some skill-based MongoDB Developer interview questions.

1. What is a database?
2. Are you familiar with DBMS? Can you explain it?
3. Are you familiar with RDMS? Can you explain it?
4. What is MongoDB?
5. What is the difference between normalization and denormalization?
6. Are you familiar with SQL? Can you explain it?
7. What is a DML compiler?
8. What is functional dependency?
9. What is a join?
10. What do you understand by NoSQL databases? Is MongoDB a NoSQL database? Explain.
11. Can you explain a database transaction?
12. How long have you worked with MongoDB?
13. Have you worked with any alternatives to MongoDB?
14. What is a Collection in MongoDB?
15. Can you explain a database-related issue you experienced and how you resolved it?
16. What is the Mongo Shell?
17. How long have you worked with SQL?
18. How does Scale-Out occur in MongoDB?
19. Are you experienced with MySQL?
20. Can you explain a transaction issue you experienced and how you resolved it?
21. Why might you choose MongoDB over other alternatives?
22. What is the Aggregation Framework in MongoDB?
23. Are you familiar with the pretty() method?
24. Are you familiar with the limit() method?
25. What is the syntax for creating a collection in MongoDB?
26. What is the syntax used to drop a collection in MongoDB?
27. Which are the different languages supported by MongoDB?
28. When inserting a document into MongoDB, what command do you use?
29. What is GridFS? How do you use it?
30. What is journaling used for in MongoDB?
31. How do you create an index?
32. Explain the concept of pipeline in the MongoDB aggregation framework.
33. Define and explain projection in MongoDB.
34. Can you explain a situation in which you would use the MapReduce function?
35. When would you use the locking function in MongoDB?
36. What is a Replica Set in MongoDB?
37. Explain the Replication Architecture in MongoDB.
38. Can you explain a situation in which you would use namespace?

MongoDB Developer Interview Questions and Answers

Every interview is different and the questions may vary. However, there are lots of general questions that get asked at every interview.

Below are some common questions you'd expect during MongoDB Developer interviews. Click on each question to see how to answer them.

1. Why Do You Want This Job?
2. What Is Your Greatest Accomplishment?
3. What is Your Greatest Strength?
4. What is Your Salary Expectation?
5. Tell Me About Yourself
6. Why Do You Want To Leave Your Current Job?
7. Are You a Leader or a Follower?
8. Do You Have Any Questions for Us?
9. What is Your Greatest Weakness?
10. Why Should We Hire You?

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