SPLK-1003 Configuration Files Practice Question
When using transforms.conf to extract fields, what is the 'SOURCE_KEY' setting used for?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
To specify which field the regex is applied to
SOURCE_KEY allows you to specify a different field (or the whole raw event) to apply the regex to, instead of the default '_raw'.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
To specify which field the regex is applied to
Why this is correct
It allows redirection of the regex engine to a specific field.
- ✗
To specify the index
Why it's wrong here
SOURCE_KEY does not control indexing destinations.
- ✗
To define the sourcetype
Why it's wrong here
Sourcetype is defined in props.conf.
- ✗
To set the time format
Why it's wrong here
Time extraction uses TIME_PREFIX and TIME_FORMAT.
About these practice questions
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official Splunk exam blueprint
This SPLK-1003 practice question is part of Courseiva's free Splunk certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the SPLK-1003 exam.