SPLK-1001 Using Fields and Lookups Practice Question
An automatic lookup is configured but it is not enriching events. The lookup file is large (100MB) and is updated daily. What setting could improve performance?
⚠ Common exam trap
Many exam-takers confuse `batch_index_lookup` with other lookup optimizations like `filter` or `max_matches`, or assume that switching to a search-time `| lookup` command is always faster, when in fact the batch setting directly addresses the performance bottleneck of large automatic lookups.
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
✓
Enable `batch_index_lookup = true`
Enabling `batch_index_lookup = true` in transforms.conf allows Splunk to process the entire 100MB lookup file in a single batch operation rather than performing individual lookups for each event. This significantly reduces I/O overhead and improves performance for large, daily-updated lookup files by loading the entire lookup into memory once per batch.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Set `filter` in transforms.conf
Why it's wrong here
Does not improve batch processing.
- ✓
Enable `batch_index_lookup = true`
Why this is correct
Speeds up lookups.
- ✗
Increase `max_matches`
Why it's wrong here
Could degrade performance.
- ✗
Use `| lookup` instead of automatic
Why it's wrong here
Not a setting and may be slower.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This SPLK-1001 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-1001 exam.