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.

111. What is GridFS in MongoDB used for?

Answer: Storing large files

112. How does GridFS store large files in MongoDB?

Answer: As separate documents

113. What is the primary advantage of using GridFS for large files in MongoDB?

Answer: Improved query performance

114. Which components make up GridFS in MongoDB?

Answer: Files and Chunks

115. What is a "chunk" in the context of GridFS in MongoDB?

Answer: A unit of data storage

116. How does GridFS handle large files that exceed the maximum BSON document size in MongoDB?

Answer: Breaks them into smaller chunks

117. Which MongoDB driver methods are typically used to work with GridFS?

Answer: db.getGridFS().insert(), db.getGridFS().find(), db.getGridFS().remove()

118. In GridFS, what is the role of the "fs.files" collection?

Answer: Storing file metadata

119. How are files retrieved from GridFS in MongoDB?

Answer: As a stream of chunks

120. What is the recommended use case for GridFS in MongoDB?

Answer: Storing large files
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