- A
Define a lookup definition, then use | inputlookup department.csv
Why wrong: inputlookup loads the CSV as events, not as enrichment.
- B
Define a lookup definition with userid as input field and department as output field, then use | lookup department_lookup userid OUTPUT department
This is the correct sequence: define lookup definition and use lookup command.
- C
Define a lookup table, then use | lookup department.csv userid OUTPUT department
Why wrong: Lookup command requires a definition name, not a filename.
- D
Use | join userid with department.csv
Why wrong: Join is inefficient and not intended for lookups.
Question 28 of 520
SPLK-1002 Splunk Basics and Interface Navigation Practice Question
This SPLK-1002 practice question tests your understanding of splunk basics and interface navigation. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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.
A security team wants to add department info from an external CSV file to events containing user IDs. The CSV has columns 'userid' and 'department'. What is the correct configuration?
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
✓
Define a lookup definition with userid as input field and department as output field, then use | lookup department_lookup userid OUTPUT department
Option B is correct because it follows the proper Splunk workflow for enriching events with external data: first define a lookup definition that maps the CSV file's 'userid' as the input field and 'department' as the output field, then use the `| lookup` command with the lookup name (not the filename) to automatically match the userid field in each event and add the corresponding department. This approach is efficient and scalable, as it performs a field-based lookup without requiring a separate join or manual file reference.
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.
- ✗
Define a lookup definition, then use | inputlookup department.csv
Why it's wrong here
inputlookup loads the CSV as events, not as enrichment.
- ✓
Define a lookup definition with userid as input field and department as output field, then use | lookup department_lookup userid OUTPUT department
Why this is correct
This is the correct sequence: define lookup definition and use lookup command.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Define a lookup table, then use | lookup department.csv userid OUTPUT department
Why it's wrong here
Lookup command requires a definition name, not a filename.
- ✗
Use | join userid with department.csv
Why it's wrong here
Join is inefficient and not intended for lookups.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Splunk often tests the distinction between using a lookup definition name versus a filename in the `lookup` command, and the trap here is that candidates mistakenly use the CSV filename directly (as in Option C) instead of the defined lookup name, or confuse `inputlookup` (which loads the file as events) with `lookup` (which enriches existing events).
Trap categories for this question
Command / output trap
Lookup command requires a definition name, not a filename.
Detailed technical explanation
How to think about this question
Under the hood, Splunk's `lookup` command performs a left outer join on the specified input field(s) against the lookup table file, which is cached in memory for performance; the lookup definition can also include advanced options like automatic lookup (applied at search time without explicit command), batch mode for large files, and time-based lookups. In real-world scenarios, this is critical for security teams who need to correlate user IDs from authentication logs with HR department data without duplicating data or slowing down searches, as the lookup table can be updated independently of the indexed events.
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.
TExam Day Tips
- 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
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FAQ
Questions learners often ask
What does this SPLK-1002 question test?
Splunk Basics and Interface Navigation — This question tests Splunk Basics and Interface Navigation — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Define a lookup definition with userid as input field and department as output field, then use | lookup department_lookup userid OUTPUT department — Option B is correct because it follows the proper Splunk workflow for enriching events with external data: first define a lookup definition that maps the CSV file's 'userid' as the input field and 'department' as the output field, then use the `| lookup` command with the lookup name (not the filename) to automatically match the userid field in each event and add the corresponding department. This approach is efficient and scalable, as it performs a field-based lookup without requiring a separate join or manual file reference.
What should I do if I get this SPLK-1002 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jul 4, 2026
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