SPLK-1002 Advanced Visualization and Lookups Practice Test 4 — 15 Questions

Question 1

Which two methods can reduce the resource consumption of a large CSV lookup in Splunk? (Choose 2)

Accepted Answer

Use the lookup command to only return required fields. Using the `lookup` command with a field list (e.g., `| lookup mylookup.csv field1 OUTPUT field2 field3`) reduces resource consumption by only loading the specified output fields into memory, rather than the entire CSV lookup. This minimizes memory usage and I/O overhead, especially for large CSV files with many columns.

Answer

Convert the CSV to a gzip file and reference it

Answer

Increase the max_match parameter

Answer

Use a time-based lookup to limit matches by time

Question 2

An analyst runs a search with the command 'lookup region_lookup region_code OUTPUT region_name'. The events have a region_code field with values like 'us-east' and 'eu-west'. The lookup file contains 'US-EAST' and 'EU-WEST'. The lookup returns no results. What is the most likely cause?

Accepted Answer

The case_sensitive_match is set to true. The lookup is case-sensitive ('Case_sensitive_match = true'), and the event fields have lowercase values while the lookup file has uppercase, causing no match.

Answer

The lookup file format is incorrect

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The default_match setting prevents missing matches

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The match_type is WILDCARD but no wildcards used

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The max_match setting limits results

Question 3

The search returns a timechart with multiple series but the series colors are all the same. What is the most likely reason?

Accepted Answer

The number of distinct description values exceeds the default color palette. If the number of distinct description values exceeds the default color palette (typically 10), colors will repeat. This is a common issue with many series.

Answer

The 'timechart' command cannot handle multiple series from a lookup

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The lookup should be performed before the eval

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The 'eval' command is misspelled (status=code instead of status_code?)

Answer

The lookup is not working correctly

Question 4

What action can the administrator take to resolve this warning?

Accepted Answer

Increase the max_mem_usage_mb setting in limits.conf. The error indicates the lookup file exceeds the maximum memory allocation. Increasing the max_mem_usage_mb setting in limits.conf allows loading larger files.

Answer

Split the lookup into multiple smaller files

Answer

Convert the lookup to a KV Store lookup

Answer

Increase max_match in the lookup definition

Answer

Use the lookup command with local=t

Question 5

A security analyst needs to enrich authentication logs with employee department information stored in a CSV file called 'employees.csv'. The CSV has fields: 'emp_id', 'name', 'department'. The authentication logs contain a field 'user_id' that matches 'emp_id'. Which search correctly enriches the events with the department field?

Accepted Answer

`index=auth | lookup employees.csv emp_id AS user_id OUTPUT department`. It uses the proper lookup syntax: `lookup

AS OUTPUT `. Here, `employees.csv emp_id AS user_id` maps the lookup field `emp_id` to the event field `user_id`, and outputs the `department` field. Option A incorrectly maps `user_id` to `emp_id`, which would look for a lookup field `user_id` and rename it, but the lookup table column is `emp_id`, so it will not match correctly. Option C has the same mapping error as A, and additionally outputs `name`, which is not required. Option D uses `inputlookup` which returns the contents of the lookup table, not enriching the events with a join.

Answer

`index=auth | lookup employees.csv user_id AS emp_id OUTPUT department`

Answer

`index=auth | lookup employees.csv user_id AS emp_id OUTPUT department, name`

Answer

`index=auth | inputlookup employees.csv where user_id=emp_id | table *`

Question 6

A Splunk administrator wants to create a static lookup table from a search result. Which approach is recommended?

Accepted Answer

Use the `outputlookup` command to save the search result as a CSV file.. The outputlookup command is designed to save search results directly to a CSV file in the lookups directory. Option B is manual and error-prone. Option C, inputlookup, reads a lookup file. Option D, lookup, applies a lookup but does not create a file.

Answer

Use `inputlookup` to write to a CSV file.

Answer

Use the `lookup` command to create the file.

Answer

Manually copy the results into a spreadsheet and upload as CSV.

Question 7

A lookup definition is correctly configured, but when used in a search, no results are returned. The lookup file exists and contains data. What is the most likely cause?

Accepted Answer

The lookup definition has the wrong case sensitivity setting.. Case sensitivity mismatch is a common issue: if the lookup definition expects exact case but the search field has different case, no match occurs. Option A is unlikely as too many fields do not prevent matching. Option C, disabling field extraction, would affect other parts but not lookup matching directly. Option D, format mismatch, would cause an error, not silently return no results.

Answer

The lookup file has too many fields.

Answer

The lookup file is in JSON format but the definition expects CSV.

Answer

The search time field extraction for the matching field is disabled.

Question 8

An analyst uses the following search: `... | timechart span=1h count by status`. What is the purpose of the span argument?

Accepted Answer

It defines the time interval for each data point (1 hour).. The span argument in the timechart command specifies the time interval for each data point or bucket. Here, span=1h means each bucket represents one hour. Option A is incorrect because span does not limit the number of status values; that's controlled by other means. Option B is incorrect because span=1h groups events into 1-hour, not 1-minute, intervals. Option C is incorrect because the time range of the chart is set by the search time picker, not the span argument.

Answer

It limits the number of status values displayed.

Answer

It groups events into 1-minute intervals.

Answer

It sets the time range of the chart.

Question 9

Which of the following is a recommended practice when creating a lookup table file?

Accepted Answer

Include a header row with field names that contain no spaces.. The recommended practice is to include a header row with field names that contain no spaces (Option C). This ensures proper parsing and avoids issues with special characters or spaces in field names. Option A is incorrect because the global lookups directory is not recommended; instead, lookup files should be placed in the app's lookups directory to ensure portability. Option B is incorrect because mixed case field names can cause case-sensitivity problems; lowercase is preferred. Option D is incorrect because tab-separated values are less standard and more error-prone than comma-separated values (CSV), which is the preferred format with a header row.

Answer

Place the file in the global lookups directory.

Answer

Use mixed case field names.

Answer

Use tab-separated values.

Question 10

A team uses a lookup to enrich web logs with customer region. The lookup is file-based and updated daily. Some events are not being enriched even though the lookup file has matching keys. What could be the issue?

Accepted Answer

The lookup file has leading or trailing spaces in key fields.. Leading or trailing spaces in the lookup file's key field or the search event's field will cause matching to fail silently. Splunk requires exact string matches for lookups, so extra spaces prevent the lookup key from being found. Option A (maximum file size) is incorrect because exceeding maximum size would typically cause an error or truncated results, not a silent failure of matching. Option B (file not sorted) is incorrect because file-based lookups do not require sorting; sorting is only needed for time-based lookups or certain efficient memory modes but not for basic matching. Option C (wrong timestamp format) is irrelevant because this lookup is for region enrichment based on a key field, not a time-based lookup.

Answer

The lookup file exceeds the maximum size.

Answer

The lookup file is not sorted.

Answer

The lookup definition uses the wrong timestamp format.

Question 11

An analyst wants to create a visualization showing the average response time by hour over the past day, with each server in a separate line. Which command should they use?

Accepted Answer

`... | timechart span=1h avg(response_time) by server`. It uses `timechart` with a span of 1 hour to create a time-based chart, averaging response time and splitting by server, resulting in separate lines per server over the past day. Option B is incorrect because omitting `span=1h` means Splunk may use a default span that might not be exactly one hour, and the request specifically required hourly intervals. Option C uses `chart` which is not time-based and would produce a non-time chart, not a line chart over time. Option D uses `stats` which outputs a tabular result, not a visualization.

Answer

`... | timechart avg(response_time) by server`

Answer

`... | chart avg(response_time) by hour, server`

Answer

`... | stats avg(response_time) by hour, server`

Question 12

What is the purpose of an automatic lookup?

Accepted Answer

To automatically apply a lookup to events based on a source type or index at search time.. An automatic lookup is configured in transforms.conf or props.conf to automatically apply a lookup table to events based on sourcetype or index at search time. This enriches events with additional fields without requiring the lookup command in the search. Option A is incorrect because automatic lookups do not validate field names; validation must be done separately. Option B describes the outputlookup command, which writes to a lookup file. Option C is incorrect because automatic lookups do not create tables from search results; that is done by the inputlookup or outputlookup commands. Option D correctly describes the purpose of an automatic lookup.

Answer

To automatically validate lookup field names.

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To automatically update a lookup file when the CSV changes.

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To automatically create a lookup table from search results.

Question 13

An analyst uses the following search: `index=web status=500 | timechart count by method`. What does the timechart command do?

Accepted Answer

Splits the count by the 'method' field into separate series.. The `timechart` command with a `by` clause splits the count into separate series for each distinct value of the 'method' field, creating one line per method on the chart. Option A is incorrect because the time range is determined by the search, not necessarily per day. Option B is incorrect because the default span depends on the time range (e.g., less than 24 hours uses 1-minute bins, etc.). Option C is incorrect because `timechart` does not limit to top 10 by default.

Answer

Calculates the total count per day for each method.

Answer

Bins events into 1-hour intervals by default.

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Shows only the top 10 methods.

Question 14

Which TWO of the following are best practices when creating lookup table files?

Accepted Answer

Ensure the lookup file is in CSV format with the .csv extension.. Options B and D are correct best practices when creating lookup table files. B is correct because lookup files should be in CSV format with a .csv extension for proper parsing. D is correct because placing the lookup file in the $SPLUNK_HOME/etc/apps/search/lookups directory ensures it is accessible within the app. A is incorrect because header rows with spaces in field names can cause issues; use underscores instead. C is incorrect because automatic lookup refresh is not a best practice for the creation of lookup files; it is configured separately and not related to file creation. E is incorrect because using full paths in the lookup definition is not recommended; relative paths within the app directory are preferred.

Answer

Use header rows with spaces in field names for readability.

Answer

Enable automatic lookup refresh for frequently updated files.

Answer

Use full paths in the lookup definition.

Question 15

Which THREE of the following are features of the `timechart` command?

Accepted Answer

It automatically creates a time-based chart with a default span.. A, B, and C are correct. timechart automatically creates a time-based chart with a default span (A), supports the `by` clause to split into multiple series (B), and can aggregate data using functions like count, sum, avg (C). D is incorrect because timechart does not output results to a lookup file; use the `outputlookup` command instead. E is incorrect because the `span` option is optional; if omitted, Splunk auto-selects a span based on the time range.

Answer

It can output results to a lookup file.

Answer

It requires the `span` option to be specified.