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.
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Practice Test
11. How can MongoDB be installed on a Windows machine?
A. apt-get install
B. brew install
C. choco install
D. yum install
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Answer: choco install
12. Which of the following is not a supported operating system for MongoDB?
A. Windows
B. macOS
C. Linux
D. Android
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Answer: Android
13. What is the default port for MongoDB?
A. 27017
B. 3306
C. 5432
D. 6379
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Answer: 27017
14. To start the MongoDB server, which command is used?
A. mongod
B. mongo
C. start-mongodb
D. mongos
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Answer: mongod
15. Which configuration file is used to specify MongoDB settings?
A. mongodb.conf
B. settings.conf
C. mongo.cfg
D. mongod.conf
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Answer: mongod.conf
16. In MongoDB, what is a replica set?
A. A backup of data
B. A secondary database
C. A group of interconnected MongoDB servers
D. A sharded collection
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Answer: A group of interconnected MongoDB servers
17. What is the primary purpose of the "mongos" process in MongoDB?
A. Managing data backups
B. Managing routing for sharded clusters
C. Managing user authentication
D. Managing replica sets
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Answer: Managing routing for sharded clusters
18. How can you secure a MongoDB installation with authentication?
A. Use a username and password
B. Enable SSL/TLS
C. Restrict IP access
D. All of the above
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Answer: All of the above
19. Which command is used to access the MongoDB shell?
A. mongo
B. mongod
C. mongosh
D. mongo-client
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Answer: mongo
20. What is the role of the "dbPath" setting in MongoDB configuration?
A. Specifies the port number
B. Specifies the data directory path
C. Sets the maximum connections
D. Configures user authentication
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Answer: Specifies the data directory path
