Final answer:
The statement is false; config files on both forwarders and indexers play a role during data input. Forwarders preprocess data, and indexers have their own configurations for indexing and storage.
Step-by-step explanation:
The statement that during data input, only the config files on the indexer are used is false. Config files that determine how data should be indexed can exist on both the forwarders and the indexers in a typical data ingestion architecture. Forwarders are responsible for collecting, parsing, and forwarding the data, and they may have configurations that preprocess the data before it reaches the indexer. Once the data arrives at the indexer, additional configurations may apply for indexing and storage. It's essential to understand the entire data pipeline to configure each component correctly for optimal performance and accurate data representation.