SPLK-1003 Advanced Visualization and Lookups Practice Test 8 — 15 Questions

Question 1

A company has a Splunk environment with multiple indexers and a search head. They have a large CSV lookup file for user permissions that is used in many dashboards. Recently, users have reported that dashboards are timing out or slow. The lookup file is about 500 MB and is stored in $SPLUNK_HOME/etc/apps/app_name/lookups/. The lookup is defined as an automatic lookup in props.conf for the source type 'user_activity'. The dashboards use the lookup to enrich events and then perform aggregations. The administrator checks the search logs and sees that searches using the lookup are taking a long time, and some are failing with 'Search head timeout'. The lookup file is updated daily by a script that replaces the file. Which course of action would best improve performance without sacrificing data enrichment?

Accepted Answer

Convert the CSV lookup to a KV Store lookup with the same data. Converting the CSV lookup to a KV Store lookup provides better performance for large lookups. KV Store lookups are indexed and more efficient for large datasets, and they support automatic lookups. Simply using the lookup command in dashboards would not address the size issue, splitting into multiple files adds complexity, and increasing timeout only masks the problem.

Answer

Split the lookup into multiple smaller files and use multiple lookups

Answer

Remove the automatic lookup and use the lookup command only in the dashboards

Answer

Increase the search head timeout setting

Question 2

A security analyst wants to map IP addresses to hostnames using a CSV lookup file. Which command is correct to define a lookup that maps the IP field to hostname field, with the file named 'ip_host.csv'?

Accepted Answer

lookup ip_host.csv ip as ip_output hostname as hostname_output. Option A is correct because the lookup command syntax is 'lookup

[OUTPUT ]' and here 'ip as ip_output hostname as hostname_output' correctly maps input ip to output ip_output and hostname to hostname_output. Option B is wrong because inputlookup returns all rows, not a join. Option C is wrong because the order is reversed. Option D is wrong because 'OUTPUT' without aliases is incorrect.

Answer

lookup ip_host.csv hostname OUTPUT ip

Answer

lookup ip_host.csv hostname as hostname ip as ip_output

Answer

inputlookup ip_host.csv

Question 3

A dashboard panel uses a timechart to show error counts over time. Users report that the time range picker does not affect the panel. What is the most likely cause?

Accepted Answer

The search uses a fixed earliest and latest time.. Option B is correct because if the search uses fixed earliest/latest times, the time picker has no effect. Option A is wrong because stats can still respect the time range. Option C is wrong because the index being non-time-based would prevent any time range from working, but the panel would show no data. Option D is wrong because sharing doesn't affect time range behavior.

Answer

The dashboard is not shared.

Answer

The panel uses 'stats' instead of 'timechart'.

Answer

The index is not time-based.

Question 4

A large lookup file with 10 million rows is used in a search that joins with main index data. The search is slow. Which optimization should be applied first?

Accepted Answer

Convert the lookup to a KV store collection.. Option C is correct because converting to KV store improves performance for large lookups. Option A is wrong because inputlookup loads all rows, making it slower. Option B is wrong because local=true does not help memory. Option D is wrong because subsearch adds overhead.

Answer

Use 'lookup local=true' to reduce time.

Answer

Add a filter on the lookup using a subsearch.

Answer

Use 'inputlookup' instead of 'lookup'.

Question 5

Which visualization type is best for comparing the proportion of each error type to the total errors over time?

Accepted Answer

Area chart. Option D is correct because an area chart (especially stacked) shows proportions over time. Option A (column) can be used but area is more common for proportion over time. Option B (line) does not show proportion. Option C (pie) is not time-based.

Answer

Pie chart (with multiple series)

Answer

Column chart

Answer

Line chart

Question 6

A lookup definition includes the option 'batch_index_query=True'. What is the effect?

Accepted Answer

The lookup is populated from an index query when first used.. Option A is correct because batch_index_query=True means the lookup is populated from an index search when first used. Option B is wrong because it doesn't apply to all indexes. Option C is wrong because it doesn't batch-process lookups. Option D is wrong because caching is separate.

Answer

The lookup is batch-processed to reduce number of lookups.

Answer

The lookup is applied to all indexes at once.

Answer

The lookup is cached across all search heads.

Question 7

In a dashboard panel, a table shows event counts by source. The user wants to click on a sourcetype to drill down to a new search showing all events from that source. Which token-based drilldown approach is correct?

Accepted Answer

Set a drilldown action to 'search' with a search string containing $row.sourcetype$.. Option D is correct because using $row.sourcetype$ in a drilldown search string passes the clicked value. Option A is wrong because link URL is less dynamic. Option B is wrong because form submit requires form inputs. Option C is wrong because JavaScript is not needed.

Answer

Use a custom JavaScript to navigate.

Answer

Set a drilldown action to 'form' and submit the token.

Answer

Set a drilldown action to 'link' with a URL that includes the sourcetype.

Question 8

Which TWO statements about lookup tables are true?

Accepted Answer

A lookup definition can include time-based expiration.. Options B and C are correct. B: Lookups can be defined from CSV files or KV store. C: Time-based expiration is a feature. A is false because lookups can be used in multiple commands. D is false because they are case-insensitive by default. E is false because they can be defined by power users.

Answer

Lookups can only be defined by administrators.

Answer

Lookups are case-sensitive by default.

Answer

Lookups can only be used in the 'lookup' command.

Question 9

Which THREE factors should be considered when deciding between using a lookup table and a KV store for enriching data?

Accepted Answer

KV store collections can be updated in real-time via REST API.. Options A, C, and D are correct. A: KV store can be updated in real-time via REST. C: Lookup tables support time-based lookups. D: KV store can be used with 'kv' command. B is false because KV store is faster for large datasets. E is false because 'inputlookup' is for file-based lookups.

Answer

KV store collections can be used with the 'inputlookup' command.

Answer

Lookup tables are faster for large datasets.

Question 10

Which TWO features are available for customizing dashboards in Splunk's Simple XML?

Accepted Answer

Automatically refreshing panels using token 'refresh'.. Options A and E are correct. A: Drilldown actions are available. E: Token 'refresh' can auto-refresh panels. B is false because HTML cannot embed JavaScript. C is false because CSS changes are limited. D is false because versioning is not a built-in feature.

Answer

Using HTML in a panel to embed custom JavaScript.

Answer

Using CSS to change the color of all panels.

Answer

Creating multiple dashboard versions for different user roles.

Question 11

You are a Splunk administrator at a large e-commerce company with over 5,000 employees and millions of customers. The development team has created a dashboard that displays sales data by region, using a lookup table to map customer IDs to region names. The lookup file, 'customer_region.csv', is stored on the search head. Recently, the lookup table was updated with new customer IDs, but the dashboard continues to show old region names for new customers. You have verified that the lookup file contains the new mappings and that the file is correctly formatted. The dashboard uses the 'lookup' command in its base search. You have also confirmed that the lookup definition in transforms.conf points to the correct file. The lookup file is approximately 100 MB and is updated weekly. The dashboard is accessed by multiple users across the organization. The issue only affects new customers added in the latest update. Old customers still show correct regions. You have checked the file size and timestamp, and the new file is present. The Splunk version is 8.2. The search head is not clustered. No errors are appearing in the splunkd.log related to lookups. The dashboard uses a simple XML with a timechart and a lookup. The search string is: index=sales sourcetype=transactions | lookup customer_region.csv customer_id OUTPUT region | timechart count by region. You have also tried restarting the search head, but the issue persists. What is the most likely cause?

Accepted Answer

The search head is using a cached version of the lookup, and you need to clear the lookups cache.. Option B is correct because the lookup file is cached on the search head, and clearing the cache forces reload. Option A is wrong because restarting is unnecessary. Option C is wrong because batch_index_query is not relevant. Option D is wrong because the file is correct.

Answer

The lookup definition has 'batch_index_query=True' and is not refreshing.

Answer

The dashboard is using the wrong lookup name.

Answer

The lookup file is cached and needs to be reloaded by restarting Splunk.

Question 12

You are a Splunk power user working for a healthcare organization. You have created a visualization that shows patient wait times by department over the last 30 days. The chart uses a timechart command with a 'stacked' option. Recently, the chart started showing negative values for some departments, which is impossible because wait times cannot be negative. You have verified that the raw data is correct and contains only positive wait times. The search is: index=healthcare sourcetype=patient_wait | timechart span=1d avg(wait_time) by department. The chart is displayed as a stacked area chart. The negative values appear only for a few departments sporadically. You suspect the issue is related to how null values are handled. What could be causing the negative values?

Accepted Answer

The 'stacked' option is misinterpreting null values as negative.. Option C is correct because stacked area charts can misrepresent null values as negative when there are gaps in data. Option A is wrong because timechart limit=0 does not cause negatives. Option B is wrong because overlapping time ranges would affect counts, not produce negatives. Option D is wrong because 'other' category does not cause negatives.

Answer

The timechart command is using 'limit=0' which causes overcounting of series.

Answer

There is a counting error in the search due to overlapping time ranges from data indexing delays.

Answer

The use of 'other' category in stacked charts can cause negative values when there are many series.

Question 13

You are a Splunk consultant for a financial services firm. They have a large lookup table containing customer account numbers and risk scores. This lookup is used in a critical compliance search that runs every hour. The search is failing with a memory error 'The search coordinator stopped the search due to memory usage'. You have already tried increasing the memory limit for the search via limits.conf, but the error persists. The lookup file is a CSV file of 2GB, with approximately 20 million rows. The search is: index=compliance sourcetype=transactions | lookup risk_scores.csv account_id OUTPUT risk_score | stats avg(risk_score) by transaction_type. The search runs on a single search head with 16GB RAM. The lookup is defined as static. What is the most effective optimization to resolve the memory error?

Accepted Answer

Convert the lookup to a KV store collection and use the 'kv' command in the search.. Option D is correct because converting to KV store reduces memory footprint. Option A is wrong because splitting files increases complexity without resolving memory. Option B is wrong because local=false distributes to indexers but still loads file. Option C is wrong because inputlookup with where still loads all rows.

Answer

Use 'inputlookup' with a 'where' clause to filter the lookup to only relevant account IDs before joining.

Answer

Split the lookup into multiple smaller files and use multiple lookups in the search.

Answer

Use 'lookup local=false' in the search to distribute the lookup to indexers.

Question 14

A user has created a dashboard panel using a 'chart' command with 'datacount by host'. The chart shows counts per host, but the hosts appear in alphabetical order. The user wants to sort the chart by count descending, so that the host with the most events appears first. The search is: index=main sourcetype=access | chart count by host. The dashboard is built using Simple XML. Which approach should be used to achieve the desired sorting?

Accepted Answer

Add '| sort -count' after the chart command in the search.. Option B is correct because adding | sort -count after chart sorts the results. Option A is wrong because chart properties do not include sorting by count. Option C is wrong because eventstats is unnecessary. Option D is wrong because top command changes output format.

Answer

Use the 'top' command instead of 'chart' to automatically sort by count.

Answer

Use 'eventstats' to compute counts and then sort by count.

Answer

Use the chart properties panel in the dashboard editor to set sorting by count descending.

Question 15

You are a Splunk power user at a manufacturing company. You have created a timechart that shows machine temperature readings over time. The data is indexed with timestamps every minute, but the timechart shows gaps where no data exists because some machines may not report at all times. You want to fill the gaps with 0 values to avoid misleading visualizations. The current search is: index=manufacturing sourcetype=temperature | timechart span=1h avg(temp) by machine. Which modification to the timechart command will fill the gaps with 0?

Accepted Answer

timechart span=1h usenull=t. Option A is correct because usenull=t fills null values with 0. Option B is wrong because usenull=f leaves gaps. Option C is wrong because limit=0 does not fill nulls. Option D is wrong because cont=t ensures continuous time but does not fill with 0.

Answer

timechart span=1h cont=t

Answer

timechart span=1h limit=0

Answer

timechart span=1h usenull=f useother=f