Splunk SPLK-1001 - Splunk Core Certified User

This is the correct answer because these two filters can help you limit the amount of data that Splunk retrieves from disk, which is the key to fast searching1. The _time filter allows you to specify a narrow time window for your search, which reduces the number of buckets that Splunk scans2. The index filter allows you to specify which index or indexes contain the data that you want to search, which reduces the number of files that Splunk reads3.

The four types of lookups that Splunk provides out-of-the-box are file-based, external, KV Store, and geospatial. File-based lookups use CSV files to map fields from your data to fields in the external table. External lookups use Python scripts or binary executables to populate your events with field values from an external source. KV Store lookups use a key-value store to map fields from your data to fields in the external table. Geospatial lookups use KMZ or KML files to match location coordinates in your events to geographic feature collections1.