MongoDB Online Test

1. Which authentication method is commonly used to secure access to MongoDB?

Username and password Encryption at rest Public key authentication Social login

2. When is it advisable to use the "skip" and "limit" methods for paging through query results in MongoDB?

For all queries For small result sets For large result sets For complex queries

3. What is the purpose of a hidden secondary node in MongoDB replication?

Load balancing Backup data storage Handling read operations Preventing access

4. What is the primary benefit of horizontal scaling in MongoDB?

Improved data modeling Increased capacity Simplified queries Strong data consistency

5. In MongoDB, how is data typically stored within collections?

In structured tables As key-value pairs In documents In JSON format

6. Which command is used to access the MongoDB shell?

mongo mongod mongosh mongo-client

7. Which MongoDB index type allows for fast retrieval of documents based on a single field?

Compound Index Single-field Index Multi-key Index Text Index

8. Which text index type in MongoDB is designed for case-insensitive text search?

Text Index Compound Index Case-Insensitive Index Collation Index

9. What is the primary benefit of using a MongoDB driver in an application?

Data modeling Simplified database interaction Enhanced data security Improved data storage

10. Which operator is used to perform text searches in MongoDB?

$search $text $find $query

11. Which role in MongoDB grants full access to all administrative functions and data?

ReadWrite dbOwner userAdmin clusterAdmin

12. When should you consider denormalizing data in MongoDB?

For all data modeling scenarios To reduce query complexity To avoid indexes altogether Only for very small datasets

13. What is the primary purpose of auditing in MongoDB?

Data retrieval Data replication Access control Record and review user actions

14. What is the benefit of using transactions in MongoDB?

Improved data modeling Enhanced data storage Ensured data consistency Simplified data retrieval

15. What type of data processing does MapReduce excel at in MongoDB?

Real-time analytics Batch processing Data storage Data modeling

16. What is the purpose of the secondary nodes in MongoDB replication?

Load balancing Backup data storage Handling read operations Managing elections

17. Which language is commonly used to query MongoDB?

SQL C++ JSON Python

18. What is the preferred way to handle connections in a MongoDB application to ensure scalability and performance?

Establish a new connection for each request Use a single long-lived connection Open a new connection for each query Reuse connections for multiple queries

19. What is the key feature of MongoDB Atlas that simplifies database deployment and management?

Auto-sharding NoSQL database Serverless computing Automated operations

20. What does the "right to be forgotten" entail in terms of data compliance in MongoDB?

Data encryption Data modeling Data retention Data erasure