What is the purpose of the Swap Index functionality in dtSearch?

The Swap Index functionality in dtSearch is designed to allow seamless transitions between primary indexes, particularly during maintenance or downtime. This ensures that while one index is being updated, another can keep serving search requests, minimizing disruption to users. This functionality is essential for maintaining continuous access to search capabilities, enabling organizations to manage their indexes effectively without impacting productivity.

While the other options touch on various aspects of index management, they do not align with the specific purpose of the Swap Index functionality. Improving indexing speed, excluding file types, or enhancing the quality of search results does not encapsulate the core functionality of performing index swaps in dtSearch. Therefore, the focus on maintaining search availability during operations is the defining reason why this answer is appropriate.