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.

231. What is the primary goal of monitoring in MongoDB?

Answer: Identifying and resolving issues

232. Which MongoDB feature is used for tracking and recording database activities for auditing and monitoring?

Answer: Auditing and logging features

233. What is the recommended approach to optimize query performance in MongoDB?

Answer: Use compound indexes

234. What is the purpose of the "dbStats" command in MongoDB?

Answer: Monitoring database statistics

235. Which tool is commonly used for real-time performance monitoring and issue detection in MongoDB?

Answer: Monitoring Tools

236. What is the primary goal of maintenance in MongoDB?

Answer: Performance optimization

237. In MongoDB, what is a "hot backup"?

Answer: A backup taken without users

238. What is the role of the "replSetGetStatus" command in MongoDB?

Answer: Checking the server's status

239. What is the primary purpose of the "replSetReconfig" command in MongoDB?

Answer: Configuring a replica set

240. What does the "data pruning" process typically involve in MongoDB maintenance?

Answer: Reducing data size
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