The correct answer is the search that uses `index=web status=404 | top limit=5 user_agent`. This works because the `top` command with a search-time filter—specifically the pre-filter `status=404`—ensures that only events containing 404 errors are passed to the ranking operation, making the search both accurate and efficient. On the Splunk SPLK-1003 exam, this tests your understanding of the principle that filtering should always happen before aggregation commands like `top` to minimize resource consumption and avoid skewed results. A common trap is placing `top` before the filter, which would rank all user agents first and then apply the status filter incorrectly. The key memory tip is “filter first, then rank”—always narrow your dataset with a search-time pre-filter before using `top` for accurate rankings.
SPLK-1003 Advanced Searching and Statistics Practice Question
This SPLK-1003 practice question tests your understanding of advanced searching and statistics. 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 identify the top 5 user agents that generated the most 404 errors in the last 24 hours. Which search accomplishes this correctly and efficiently?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
index=web status=404 | top limit=5 user_agent
Option A is correct because it first filters events to only those with status=404, then uses the `top` command with `limit=5` to efficiently count and rank user_agent values. This ensures the search only processes relevant events, minimizing resource usage and returning the correct top 5 user agents for 404 errors.
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.
✓
index=web status=404 | top limit=5 user_agent
Why this is correct
Correctly filters for 404 errors and efficiently returns top 5 user agents using the top command.
Related concept
Read the scenario before looking for a memorised answer.
✗
index=web | top limit=5 user_agent status=404
Why it's wrong here
Invalid syntax: top command does not accept a filter condition.
✗
index=web | top limit=5 user_agent
Why it's wrong here
Missing filter for status=404; returns top 5 overall user agents.
✗
index=web | stats count by user_agent | where status=404 | top 5 user_agent
Why it's wrong here
The status field is lost after stats, so the where clause fails.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Splunk often tests the order of operations in Splunk SPL, specifically that filtering commands like `status=404` must precede statistical commands like `top` or `stats` to ensure the aggregation is performed only on the subset of interest, not on the entire dataset.
Trap categories for this question
Command / output trap
Invalid syntax: top command does not accept a filter condition.
Detailed technical explanation
How to think about this question
The `top` command in Splunk is a statistical command that implicitly performs a `stats count` and then sorts by count descending, with an optional `limit` parameter. By filtering with `status=404` before `top`, Splunk only loads the relevant events into memory for aggregation, which is far more efficient than post-filtering or using `where` after a stats command that lacks the filter. In real-world scenarios with billions of web logs, this pre-filtering can reduce processing time from minutes to seconds.
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-1003 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 exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Advanced Searching and Statistics — This question tests Advanced Searching and Statistics — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: index=web status=404 | top limit=5 user_agent — Option A is correct because it first filters events to only those with status=404, then uses the `top` command with `limit=5` to efficiently count and rank user_agent values. This ensures the search only processes relevant events, minimizing resource usage and returning the correct top 5 user agents for 404 errors.
What should I do if I get this SPLK-1003 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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Question Discussion
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