NoSQL Online Test

1. What does the BASE acronym stand for in NoSQL databases?

Basic, Atomic, Strong, Eventually Basically Available, Soft state, Eventually consistent Binary, Availability, Scalability, Efficiency Base, Acid, Soft, Eventually

2. Which of the following properties does BASE prioritize in NoSQL databases, in contrast to the ACID properties?

Atomicity Availability Consistency Durability

3. What is a common disadvantage of NoSQL databases when it comes to data consistency?

Eventual consistency Strong consistency Isolation levels ACID compliance

4. Which consistency model allows for temporary inconsistencies and resolves them over time?

Strong consistency Eventual consistency Causal consistency Monotonic consistency

5. Which property in the CAP Theorem states that every read receives the most recent write?

Consistency Availability Partition tolerance Durability

6. Which authentication method commonly secures access to NoSQL databases?

Username/Password OAuth 2.0 Biometric RFID Cards

7. Which type of scalability involves adding more nodes to an existing system to handle increased load?

Vertical Scaling Horizontal Scaling Diagonal Scaling Dynamic Scaling

8. Which NoSQL database might use replication as a data migration strategy to ensure high availability and fault tolerance?

MongoDB Cassandra Redis Couchbase

9. Which NoSQL database consistency model aims to achieve the best possible consistency within the constraints of a distributed system?

Strong consistency Eventual consistency Causal consistency Monotonic consistency

10. Which consistency model is suitable for applications where low-latency reads are more important than strong data consistency?

Strong consistency Eventual consistency Causal consistency Monotonic consistency

11. What is the primary goal of data migration in NoSQL databases?

Data Duplication Data Consistency Data Deletion Data Compression

12. In a schema-less NoSQL database, data is typically stored in what format?

Tables Documents Rows Columns

13. What does GDPR (General Data Protection Regulation) primarily address in NoSQL data?

Data Sharding Data Encryption Data Privacy Data Integrity

14. Which backup method is suitable for protecting against accidental data loss, but less effective for disaster recovery in NoSQL databases?

Incremental Backup Differential Backup Full Backup Continuous Backup

15. Which type of data migration moves data from one NoSQL database to another while preserving the data structure?

Schema Migration Vertical Migration Horizontal Migration NoSQL-to-SQL Migration

16. What is the focus of the "S" in BASE?

Speed Strong Soft Staleness

17. What is the primary concern in NoSQL database security?

Data Integrity Scalability Availability Performance

18. What is the primary purpose of a query language in NoSQL databases?

Data retrieval Data modeling Data encryption Data partitioning

19. Which query language is commonly associated with querying data in JSON-based NoSQL databases?

SQL N1QL CQL SPARQL

20. Which principle of the CAP Theorem asserts that all nodes in a distributed system can read and write data?

Consistency Availability Partition tolerance Atomicity