SPLK-1002 Advanced Searching and Statistics Practice Question
A data scientist wants to extract the domain from email addresses in the `_raw` field. The emails follow the pattern user@domain.tld. Which eval expression should be used to create a new field called `domain` containing only the domain part?
⚠ Common exam trap
Candidates often confuse the zero-based index of `mvindex` (thinking index 1 is the username) or incorrectly assume `replace` with a regex is the most straightforward approach, when in fact `split` with `mvindex` is the simplest and most reliable method for this exact pattern.
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
✓
eval domain=mvindex(split(email,"@"),1)
`split(email,"@")` creates a multivalue field with two parts: the username (index 0) and the domain (index 1). `mvindex(...,1)` extracts the second element, which is the domain. This is the most direct and efficient way to isolate the domain from an email address in Splunk's eval expression.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
eval domain=mvindex(split(email,"@"),1)
Why this is correct
Splits on '@' and takes the second part (index 1) which is the domain.
- ✗
eval domain=mvindex(split(email,"@"),0)
Why it's wrong here
This extracts the user part, not the domain.
- ✗
eval domain=replace(email,".*@(.*)","\1")
Why it's wrong here
`replace` with regex is not the correct way; `rex` command is needed for regex extraction.
- ✗
eval domain=substr(email, indexof(email,"@")+1)
Why it's wrong here
`substr` requires a start position and length; indexof returns a number, but substr syntax is incorrect.
Go deeper
Related to this question
About these practice questions
Courseiva writes every SPLK-1002 question from scratch — 475 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This SPLK-1002 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-1002 exam.