Which caching method must be enabled according to the DTK configuration?

The correct answer is the response caching method, as it plays a crucial role in optimizing the performance and efficiency of data retrieval in the system.

Response caching involves storing the results of dynamic queries, which can significantly reduce the load on the server and speed up response times for users. By enabling response caching, the system can serve repeated requests for the same data swiftly without having to process the original query each time, ensuring a smoother experience for users and reducing overall processing time.

This method is particularly important in the context of systems like the DTK (Data Toolkit), where the efficiency of data handling is paramount. Response caching ensures that frequently accessed data does not need to be regenerated with every request, minimizing server workload and improving scalability.

Each of the other caching methods—data, image, and file caching—has its specific uses and may enhance overall performance, but response caching is essential for the DTK configuration to ensure effective handling of dynamic responses.