240+ MongoDB MCQ With Online Practice Test

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MongoDB is a popular NoSQL database system renowned for its flexibility and scalability. It uses a document-oriented model, storing data in JSON-like BSON format, allowing for dynamic schemas and easy data manipulation. MongoDB's distributed architecture supports horizontal scaling, ensuring high availability and performance. It's widely utilized for applications requiring real-time data access and complex data structures. Its features include automatic sharding, replication, and support for geospatial data, making it a versatile choice for a broad range of industries, from e-commerce and social media to IoT and big data analytics.

1. What type of database is MongoDB?

Answer: Document store

2. Which of the following data model does MongoDB use?

Answer: Document

3. What does BSON stand for in the context of MongoDB?

Answer: Binary JSON

4. MongoDB stores data in collections. What is a collection similar to in relational databases?

Answer: Tables

5. What is the primary key in MongoDB called?

Answer: _id Field

6. Which language is commonly used to query MongoDB?

Answer: JSON

7. What does ACID stand for in the context of database transactions?

Answer: Atomicity, Consistency, Isolation, Durability

8. MongoDB uses a flexible schema. What does this mean?

Answer: Data can have varying structure

9. Which of the following is not a valid data type in MongoDB?

Answer: Vector

10. What is the command-line shell for MongoDB called?

Answer: mongosh
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