Perform Regex Field Extractions Using the Field Extractor (FX) SPLK-1002 Practice Questions (Page 2)

Questions 6–10

1. 6application · medium

   A Splunk admin is using the Field Extractor to create a regex extraction for a field called 'session_id' in web logs. The logs contain lines like: session=abc123xyz. The admin highlights 'abc123xyz' in the sample event, and the FX generates the regex: (?<session_id>[a-z0-9]+). The preview shows the field correctly on the sample event. However, when the admin tests the extraction on a different event with the session ID 'ABC123XYZ', the field does not appear. What is the most likely reason?

   • AThe regex is too broad and matches the first alphanumeric sequence in the event, which is not the session ID in the second event.
   • BThe regex is case-sensitive, so it does not match uppercase letters in 'ABC123XYZ'.
   • CThe regex is too restrictive because it only matches alphanumeric characters, and 'ABC123XYZ' contains only alphanumeric characters.
   • DThe regex is not anchored to the beginning of the event, so it cannot match a session ID that appears later in the event.
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2. 7foundation · easy

   What does the preview pane in the Field Extractor show?

   • AThe list of all fields in the index
   • BThe raw event text with the regex highlighted
   • CThe extracted field values for the sample events
   • DThe search results that match the extraction
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4. 8foundation · easy

   In the Field Extractor, after the initial regex is generated, what can a user do to improve the extraction accuracy?

   • AManually edit the regular expression in the provided text box
   • BIncrease the time range of the search
   • CRename the field to match the regex
   • DChange the index of the sample events
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5. 9expert · medium

   A Splunk admin is creating a regex field extraction for a field called 'user_email' in authentication logs. The logs contain lines like: user=j.doe@example.com action=login. The admin selects 10 sample events that all have the same format and completes the extraction. After saving, the admin notices that the field is not appearing on all events of the sourcetype. The admin suspects the sample events were not representative. Which of the following is the most effective way to improve the extraction?

   • ASelect events from a single user to ensure consistency in the extraction.
   • BSelect only the most recent events as samples, as they are more likely to be representative of the current data.
   • CSelect sample events that include a variety of email formats, such as different domain names and usernames.
   • DSelect events that all have the same domain name to simplify the regex.
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6. 10foundation · easy

   When using the Field Extractor, why is it important to select sample events that represent the data pattern you want to extract?

   • ATo make the extraction run faster on the indexer
   • BTo ensure the field is extracted from all data sources
   • CTo reduce the number of events in the search results
   • DTo ensure the extraction works for all events with that pattern
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