Apache Kafka Complete Practice Exam 2025 – All-in-One Prep

Having memory swapped for Kafka notably degrades performance due to the inherent characteristics of how memory swapping operates. When a system uses virtual memory, portions of data that the operating system deems less immediately necessary are moved from RAM to disk storage, a process known as swapping. This action can introduce significant latency since accessing data from disk is inherently slower than accessing it from RAM.

In the context of Kafka, which is designed for high-throughput and low-latency messaging, any delays resulting from accessing swapped memory can severely affect its performance and the overall responsiveness of the system. This can lead to increased latency in message production and consumption, which undermines Kafka’s core functionality as a real-time data streaming platform.

The other options suggest benefits that are not accurate in the context of memory swapping. For example, data integrity is primarily influenced by how data is persisted and managed within Kafka itself, not by memory swapping. Enhancing system throughput contradicts the negative impact that swapping has on performance, and reducing operational costs isn't a relevant or direct outcome of having memory swapped, especially given the potential for increased resource usage when performance issues arise.