Cassandra Practice Test

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How is a Keyspace defined in Cassandra?

As a structure for in-memory data
As a database with associated replication parameters
As a temporary storage area for Tables
As a single data record

The correct answer is: As a database with associated replication parameters

A Keyspace in Cassandra serves as the primary container for tables, and it is crucial to how data is organized and managed within the database. It is defined as a database that encompasses tables along with the associated replication parameters, which dictate how data is distributed and replicated across the nodes in a Cassandra cluster. This replication setup is vital for ensuring data durability and availability, which are key aspects of Cassandra's design as a distributed database. By establishing a Keyspace, you not only lay out the structure for tables but also specify how many copies of the data are stored and how those copies are distributed across different nodes. This is important for balancing load and enhancing fault tolerance. In contrast, the other options do not accurately describe the function or role of a Keyspace within Cassandra's architecture. For example, it is not simply an in-memory structure, a temporary storage area, or a single data record, as these aspects do not encapsulate the core attributes of a Keyspace in terms of organization and replication.