When should the regular expression mode of Field Extractor (FX) be used? (select all that apply)

The regular expression mode of Field Extractor (FX) should be used for data with multiple, different

characters separating fields or for unstructured dat

a. The regular expression mode allows you to select a sample event and highlight the fields that you

want to extract, and the field extractor generates a regular expression that matches similar events

and extracts the fields from them.

Reference

See Build field extractions with the field extractor - Splunk Documentation and Field Extractor: Select

Method step - Splunk Documentation.