1.
Explain what is MongoDB?
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Xamarin MongoDB interview questions.
Only challenges
- 2.
How many indexes does MongoDB create by default for a new collection?
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- 3.
Which are the most important features of MongoDB?
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- 4.
When should we embed one document within another in MongoDB?
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- 5.
Compare SQL databases and MongoDB at a high level
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- 6.
If you remove an object attribute, is it deleted from the database?
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- 7.
Does MongoDB need a lot space of Random Access Memory (RAM)?
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- 8.
Why does Profiler use in MongoDB?
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- 9.
What is “Namespace” in MongoDB?
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- 10.
What are Indexes in MongoDB?
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- 11.
What is BSON in MongoDB?
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- 12.
What is a replica set?
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- 13.
What Is Replication In MongoDB?
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- 14.
Mention the command to insert a document in a database called school and collection called persons.
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- 15.
Explain the structure of ObjectID in MongoDB
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- 16.
Why MongoDB is not preferred over a 32-bit system?
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- 17.
Does MongoDB pushes the writes to disk immediately or lazily?
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- 18.
When to use MongoDB or other document oriented database systems?
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- 19.
What is sharding?
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- 20.
What is use of capped collection in MongoDB?
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- 21.
What is the difference between MongoDB and MySQL?
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- 22.
Does Mongodb Support Foreign Key Constraints?
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- 23.
Why are MongoDB data files large in size?
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- 24.
What is the difference b/w MongoDB and CouchDB?
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- 25.
Can you create an index on an array field in MongoDB? If yes, what happens in this case?
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- 26.
If you remove a document from database, does MongoDB remove it from disk?
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- 27.
What is Sharding in MongoDB?
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- 28.
Should I normalize my data before storing it in MongoDB?
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- 29.
What does MongoDB not being ACID compliant really mean?
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- 30.
When to use CouchDB over MongoDB and vice versa?
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- 31.
How is MongoDB better than other SQL databases?
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- 32.
How can you achieve transaction and locking in MongoDB?
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- 33.
How can you achieve primary key - foreign key relationships in MongoDB?
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- 34.
What is oplog?
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- 35.
What is a covered query in MongoDB?
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- 36.
Is there an “upsert” option in the mongodb insert command?
Answer:
- 37.
Explain advantages of BSON over JSON in MongoDB?
Answer:
- 38.
Does MongoDB support ACID transaction management and locking functionalities?
Answer:
- 39.
How is data stored in MongoDB?
Answer:
- 40.
Can one MongoDB operation lock more than one databases? If yes, how?
Answer:
- 41.
What is Aggregation in MongoDB?
Answer:
- 42.
What is BSON and exactly how is it different from JSON?
Answer:
- 43.
What is a cluster in MongoDB?
Answer:
- 44.
Mention the command to check whether you are on the master server or not.
Answer:
- 45.
How can I combine data from multiple collections into one collection?
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- 46.
How do I perform the SQL JOIN equivalent in MongoDB?
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- 47.
How to query MongoDB with %like%?
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- 48.
Find objects between two dates MongoDB
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- 49.
How to query MongoDB with “like”?
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- 50.
What happens if an index does not fit into RAM?
Answer:
- 51.
Mention the command to list all the indexes on a particular collection
Answer:
- 52.
How can you isolate your cursors from intervening with the write operations?
Answer:
- 53.
Explain what is horizontal scalability?
Answer:
- 54.
How does MongoDB provide concurrency?
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- 55.
How does Journaling work in MongoDB?
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- 56.
Is MongoDB schema-less?
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- 57.
When to Redis or MongoDB?
Answer:
- 58.
How replication works in MongoDB?
Answer:
- 59.
What are alternatives to MongoDB?
Answer:
- 60.
Where can I run MongoDB?
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- 61.
At what interval does MongoDB write updates to the disk?
Answer:
- 62.
What are Primary and Secondary Replica sets?
Answer:
- 63.
Why is a covered query important?
Answer:
- 64.
Does MongoDB provide a facility to do text searches? How?
Answer:
- 65.
How does MongoDB ensure high availability?
Answer:
- 66.
What's the advantage of the backup features in Ops Manager versus traditional backup strategies?
Answer:
- 67.
Where does MongoDB stand in the CAP theorem?
Answer:
- 68.
Which are the two storage engines used by MongoDB?
Answer:
- 69.
What are three primary concerns when choosing a data management system?
Answer:
- 70.
How much faster is Redis than MongoDB?
Answer:
- 71.
What is a Storage Engine in MongoDB
Answer:
- 72.
What is splitting in MongoDB?
Answer:
- 73.
How to condense large volumes of data in Mongo?
Answer:
- 74.
What are the differences between MongoDB and MySQL?
Answer:
- 75.
Update MongoDB field using value of another field
Answer:
- 76.
How to check if a field contains a substring?
Answer:
- 77.
How to get the last N records from find?
Answer:
- 78.
MongoDB relationships. What to use - embed or reference?
Answer:
- 79.
How to remove a field completely from a MongoDB document?
Answer:
- 80.
By default, MongoDB writes and reads data from both primary and secondary replica sets. True or False.
Answer:
- 81.
How to find MongoDB records where array field is not empty?
Answer:
- 82.
Is it possible to update MongoDB field using value of another field?
Answer:
- 83.
How to find document with array that contains a specific value?
Answer:
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