Final answer:
Federated Search allows users to search multiple sources simultaneously using a single search query, and generating SPL commands is just one way to utilize it.
Step-by-step explanation:
Federated Search allows users to search multiple sources simultaneously using a single search query. While generating SPL commands is one way to utilize Federated Search, it is not the only method. Users can also perform searches using other languages and techniques, depending on the search platform's capabilities. For example, they can use SQL commands or REST APIs to gather data from various sources. Therefore, the statement 'Using Federated Search, we can only use generating SPL commands' is False.