Final answer:
The true statement about Cassandra's architecture is d) All of the options mentioned, as it has a masterless architecture, provides customizable replication, and offers continuous availability and scalability.
Step-by-step explanation:
The question asks which statement about Cassandra's architecture is true. The correct answer is d) All of the options mentioned. Let's break down each statement:
- a) Cassandra has a "masterless" architecture, where all nodes are the same. This means that there is no single point of failure and each node can service any request.
- b) Cassandra provides customizable replication, storing redundant copies of data across nodes that participate in a Cassandra ring. This ensures high availability and fault tolerance.
- c) Cassandra delivers continuous availability, linear scalability, and operational simplicity across many commodity servers, which allows it to scale horizontally by adding more machines to the network.