The correct answer is Option B, which uses eval to strip the 'ms' suffix and then multiplies by 1 to force a numeric conversion. This works because Splunk treats string fields as text until explicitly cast to a number, and multiplying a clean string by 1 triggers automatic type coercion, turning '120' into the integer 120 for computation. On the SPLK-1002 exam, this question tests your understanding of data type conversion and the eval command, a frequent topic where candidates must distinguish between string manipulation and numeric operations. A common trap is assuming replace alone converts the field, but it only removes characters without changing the data type. Remember the memory tip: "Strip the unit, then multiply by one—your average is done."
SPLK-1002 Using Fields and Lookups Practice Question
This SPLK-1002 practice question tests your understanding of using fields and lookups. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
An analyst wants to compute the average response time for each server from web server logs. The field `response_time` is a string like '120ms'. What is the correct way to convert and compute?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
eval response_num=replace(response_time, "ms", "") | eval response_num=response_num*1 | stats avg(response_num) by server
Option B is correct because it uses eval to convert the string to a number by removing 'ms' and multiplying by 1 (or using tonumber). Option A is wrong because it adds literal 'ms' to numeric values. Option C is wrong because replace doesn't convert to numeric. Option D is wrong because it adds the unit back.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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 response_time=response_time + "0" | stats avg(response_time) by server
Why it's wrong here
Adding a string does not convert to numeric; avg will fail.
✓
eval response_num=replace(response_time, "ms", "") | eval response_num=response_num*1 | stats avg(response_num) by server
Why this is correct
Replace removes 'ms', and multiplying by 1 converts to numeric, then avg works.
Related concept
Read the scenario before looking for a memorised answer.
✗
eval response_num=replace(response_time, "ms", "") | stats avg(response_num) by server
Why it's wrong here
Replace returns a string, so avg will treat it as a string with unpredictable results.
✗
eval avg_response=avg(response_time)
Why it's wrong here
Avg requires numeric fields; string fields cause errors or unexpected results.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the SPLK-1002 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which SPLK-1002 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Using Fields and Lookups — This question tests Using Fields and Lookups — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: eval response_num=replace(response_time, "ms", "") | eval response_num=response_num*1 | stats avg(response_num) by server — Option B is correct because it uses eval to convert the string to a number by removing 'ms' and multiplying by 1 (or using tonumber). Option A is wrong because it adds literal 'ms' to numeric values. Option C is wrong because replace doesn't convert to numeric. Option D is wrong because it adds the unit back.
What should I do if I get this SPLK-1002 question wrong?
Identify which SPLK-1002 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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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.
Question Discussion
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