NoSQL Online Test

1. In which type of NoSQL database is data organized into column families?

Document Stores Graph Databases Key-Value Stores Column-Family Stores

2. In distributed systems adhering to the CAP Theorem, what might be sacrificed during network partitions?

Availability Consistency Partition tolerance Performance

3. What does "Partition tolerance" mean in the context of the CAP Theorem?

The ability to handle network partitions The division of data into partitions The separation of read and write operations The consistency of data

4. What does the "B" in BASE stand for?

Balanced Basically Byzantine Binary

5. In BASE, what is the meaning of "E"?

Evergreen Eventual Efficient Elastic

6. Which backup method involves taking a snapshot of the entire NoSQL database at a specific point in time?

Incremental Backup Differential Backup Full Backup Continuous Backup

7. What is a significant advantage of NoSQL databases when it comes to handling unstructured and semi-structured data?

Flexible schema Strong consistency Relational model Complex queries

8. 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

9. In a distributed NoSQL system, which consistency model offers the lowest consistency guarantees but the highest availability and partition tolerance?

Strong consistency Eventual consistency Causal consistency Monotonic consistency

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

Username/Password OAuth 2.0 Biometric RFID Cards

11. Which NoSQL database is designed for high availability and partition tolerance?

Cassandra MongoDB CouchDB Couchbase

12. Which type of data migration typically involves copying the entire dataset to the target NoSQL database?

Horizontal Migration Vertical Migration Total Migration Incremental Migration

13. Which type of attack attempts to guess a user's password repeatedly?

DDoS Attack Brute Force Attack SQL Injection Cross-Site Scripting (XSS)

14. What type of NoSQL database is suitable for highly connected data?

Key-Value Stores Column-Family Stores Graph Databases Document Stores

15. What is one of the main advantages of schema-less design in NoSQL databases?

Strong data consistency Flexibility in data modeling Rapid query performance Fixed data structure

16. Which type of cache is typically used for improving read performance in NoSQL databases?

Write-Through Cache Write-Behind Cache Read-Through Cache Eviction Cache

17. 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

18. Which NoSQL database is often used for caching and session management?

Cassandra Redis Memcached Elasticsearch

19. What type of data model does Apache Solr use for its search capabilities?

Document Graph Key-Value Search-Oriented

20. What does the "I" stand for in the "BASE" consistency model?

Immediate Isolation Inconsistency Immutable