Cassandra Practice Test

What are the characteristics of Cassandra's properties?

1. Distributed, Centralized, High cost

2. Elastic scalability, High availability, Single point of failure

3. Distributed, Decentralized, High availability

4. Static scalability, Elastic consistency, Low availability

The correct answer is: Distributed, Decentralized, High availability

The correct choice highlights several fundamental characteristics of Apache Cassandra that underscore its design philosophy and operational advantages. Cassandra is predominantly distributed, meaning that it employs a distributed architecture where data is spread across many servers or nodes. This distribution enhances its ability to handle large volumes of data and supports high write and read throughput. In addition, the decentralized nature of Cassandra is a critical feature. Unlike some database systems that rely on a single master node, Cassandra operates without a central authority or node. This decentralization means that every node in the cluster has equal responsibilities and can independently handle read and write requests, which further contributes to its resilience and fault tolerance. High availability is another key characteristic. Cassandra is designed to ensure that data is always accessible, even in the event of hardware failures or network issues. It achieves this through replication, where data is copied across multiple nodes, allowing the system to remain operational even if one or several nodes go down. Overall, the choice that correctly identifies these traits—distributed, decentralized, and high availability—captures the essence of Cassandra's architecture and its advantages for managing data at scale.