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1.
What is MongoDB and what are its main features?
Answer:
MongoDB Fundamentals
- 2.
How does MongoDB differ from relational databases?
Answer: - 3.
Can you describe the structure of data in MongoDB?
Answer: - 4.
What is a Document in MongoDB?
Answer: - 5.
How is data stored in collections in MongoDB?
Answer: - 6.
Describe what a MongoDB database is.
Answer: - 7.
What is the default port on which MongoDB listens?
Answer: - 8.
How does MongoDB provide high availability and disaster recovery?
Answer: - 9.
What are indexes in MongoDB, and why are they used?
Answer: - 10.
What is the role of the id field in MongoDB documents?
Answer:
CRUD Operations
- 11.
How do you create a new MongoDB collection?
Answer: - 12.
What is the syntax to insert a document into a MongoDB collection?
Answer: - 13.
Describe how to read data from a MongoDB collection.
Answer: - 14.
Explain how to update documents in MongoDB.
Answer: - 15.
What are the MongoDB commands for deleting documents?
Answer: - 16.
Can you join two collections in MongoDB? If so, how?
Answer: - 17.
How do you limit the number of documents returned by a MongoDB query?
Answer: - 18.
What is the difference between find() and findOne() in MongoDB?
Answer: - 19.
How can you achieve pagination in MongoDB?
Answer: - 20.
What are the differences between MongoDB’s insertOne and insertMany methods?
Answer:
Indexing and Aggregation
- 21.
Describe a compound index in MongoDB.
Answer: - 22.
What is the aggregation pipeline in MongoDB?
Answer: - 23.
How can you create an index in MongoDB and when should you do it?
Answer: - 24.
Explain how MongoDB’s $match, $group and $sort operators work in an aggregation pipeline.
Answer: - 25.
What is the purpose of the explain() method?
Answer:
Replication and Sharding
- 26.
Can you explain MongoDB’s replication?
Answer: - 27.
Describe the purpose and components of a replica set.
Answer: - 28.
What is sharding in MongoDB and when would you use it?
Answer: - 29.
How does MongoDB perform automatic failover?
Answer: - 30.
Describe the difference between horizontal scaling and vertical scaling, and how MongoDB supports them.
Answer:
Performance and Optimization
- 31.
How does MongoDB handle large data volumes?
Answer: - 32.
What strategies can you use to diagnose and address performance issues in MongoDB?
Answer: - 33.
How do you ensure that indexes fit into RAM?
Answer: - 34.
Can you explain MongoDB’s write concern?
Answer: - 35.
What is a covered query in MongoDB?
Answer:
MongoDB Security
- 36.
What are the security features available in MongoDB?
Answer: - 37.
How do you enable authentication in MongoDB?
Answer: - 38.
Describe role-based access control in MongoDB.
Answer: - 39.
Explain how to encrypt MongoDB data.
Answer: - 40.
Can you set up MongoDB to use TLS/SSL for connections?
Answer:
MongoDB Storage Engines
- 41.
What are the different storage engines available in MongoDB?
Answer: - 42.
How does the WiredTiger storage engine differ from MMAPv1?
Answer: - 43.
Can you switch between storage engines in a MongoDB database?
Answer:
Advanced MongoDB Concepts
- 44.
What is the oplog in MongoDB, and how does it work?
Answer: - 45.
How do you use the $lookup operator in MongoDB?
Answer: - 46.
Can you explain the role of a mongos server in a sharded MongoDB architecture?
Answer: - 47.
What is journaling in MongoDB and why is it important?
Answer: - 48.
Explain the GridFS specification in MongoDB.
Answer:
MongoDB Schema Design
- 49.
How does schema design impact performance in MongoDB?
Answer: - 50.
Compare embedding vs. linking documents in MongoDB.
Answer: - 51.
What factors do you consider when designing a schema for MongoDB?
Answer: - 52.
How do you handle one-to-many relationships in MongoDB data modeling?
Answer:
MongoDB Management and Maintenance
- 53.
How do you perform backups in MongoDB?
Answer: - 54.
What techniques can be used to restore a MongoDB database?
Answer: - 55.
How would you monitor the performance of a MongoDB instance?
Answer: - 56.
What factors would lead you to defragment a MongoDB collection?
Answer:
Working with Data Types
- 57.
What are the different data types supported in MongoDB?
Answer: - 58.
How does MongoDB store different types of numerical data?
Answer: - 59.
How does MongoDB handle DateTime data types?
Answer: - 60.
Can you store multimedia files directly in MongoDB?
Answer:
MongoDB and Programming
- 61.
How do you connect to a MongoDB database from a Python script?
Answer: - 62.
What is Mongoose and how does it relate to MongoDB?
Answer: - 63.
Can you create and use stored procedures in MongoDB?
Answer: - 64.
Describe how to use the Mongo Shell for database operations.
Answer:
MongoDB Drivers and ODMs
- 65.
What is the purpose of MongoDB ODM / ORM frameworks?
Answer: - 66.
How can you perform MongoDB operations using Node.js?
Answer: - 67.
List some popular libraries for integrating MongoDB with web applications.
Answer:
MongoDB and Big Data
- 68.
How is MongoDB used in big data analytics?
Answer: - 69.
Can MongoDB handle real-time analytics workloads?
Answer: - 70.
How do you stream large quantities of data into and out of MongoDB?
Answer:
MongoDB Internals
- 71.
How does MongoDB handle locking and concurrency?
Answer: - 72.
What is the relationship between BSON and MongoDB?
Answer: - 73.
Can you explain the concept of a cursor in MongoDB?
Answer: - 74.
How does MongoDB manage memory?
Answer:
MongoDB Deployment
- 75.
What are some best practices for securing a MongoDB instance?
Answer: - 76.
How do you scale a MongoDB deployment?
Answer: - 77.
What is Ops Manager in MongoDB?
Answer:
MongoDB Errors and Troubleshooting
- 78.
How do you troubleshoot a slow-running query in MongoDB?
Answer: - 79.
What could cause a MongoServerError: E11000 duplicate key error?
Answer: - 80.
How would you handle a scenario where the MongoDB service won’t start?
Answer:
MongoDB in the Cloud
- 81.
What are some MongoDB cloud-hosted solutions?
Answer: - 82.
How does MongoDB Atlas enhance MongoDB capabilities?
Answer:
API and Tools
- 83.
Describe the use of Compass in MongoDB.
Answer: - 84.
Explain the use of Robo 3T (formerly Robomongo).
Answer: - 85.
Can you work with MongoDB using the command line? If so, how?
Answer:
Contemporary MongoDB Challenges and Considerations
- 86.
What factors to consider when deploying MongoDB in a containerized environment?
Answer: - 87.
How does MongoDB work with microservices architectures?
Answer: - 88.
What are change streams in MongoDB?
Answer:
MongoDB Updates and Evolution
- 89.
What major features were added in the latest MongoDB release?
Answer: - 90.
How does MongoDB handle version upgrades in a production environment?
Answer:
Use Cases for MongoDB
- 91.
In what scenarios is MongoDB favored over a relational database?
Answer: - 92.
What are some common patterns of data access in applications that use MongoDB?
Answer:
MongoDB Query Optimization
- 93.
How can you prevent slow queries in MongoDB?
Answer: - 94.
Explain the role of the Profiler in MongoDB.
Answer: - 95.
How are B-tree indexes implemented in MongoDB?
Answer:
Advanced Queries and Data Processing
- 96.
How do you handle complex transactions in MongoDB?
Answer: - 97.
Explain the MongoDB MapReduce operation.
Answer: - 98.
Can you perform text searches in MongoDB?
Answer:
MongoDB Integration
- 99.
How can you integrate MongoDB with third-party applications?
Answer: - 100.
Describe how to synchronize data between SQL databases and MongoDB.
Answer:
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