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.
131. What is the primary purpose of taking backups in MongoDB?
Answer:Data recovery
132. What is a common method for creating backups in MongoDB?
Answer:Taking a snapshot of data
133. What is a "point-in-time" backup in MongoDB?
Answer:A backup that captures data at a specific time
134. Which MongoDB tool is commonly used to perform database backups?
Answer:mongodump
135. What does the "oplog" in MongoDB help with during restoration?
Answer:Data replication
136. How can you restore a backup created with "mongodump" in MongoDB?
Answer:Use "mongorestore"
137. What is a common approach to automate MongoDB backup processes?
Answer:Creating custom scripts
138. Which "dump" format is the default output format of "mongodump"?
Answer:BSON
139. What is the purpose of a "cold backup" in MongoDB?
Answer:Backup taken while the system is running
140. How can you restore a database from a snapshot in MongoDB?
