4.3 Use XQL to Query Datasets XSIAM-ANALYST Practice Questions (Page 3)

Questions 11–15

1. 11application · medium

   An analyst is running a query that scans a large dataset and is taking too long. The query currently filters on a non-indexed field and projects many columns. Which change will most improve query performance?

   • AAdd a sort command before the filter.
   • BRemove the fields command to return all columns.
   • CAdd a filter on a time field to narrow the time range.
   • DIncrease the limit to return more records.
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2. 12foundation · easy

   Which XQL command is used to combine data from two datasets based on a common field?

   • Amerge
   • Bcombine
   • Cunion
   • Djoin
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4. 13foundation · easy

   In an XQL join, what is the purpose of the `on` clause?

   • AIt specifies the order of the joined results.
   • BIt specifies the maximum number of joined records.
   • CIt specifies the fields to include in the output.
   • DIt specifies the common field(s) used to match records.
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5. 14foundation · easy

   What does the `coalesce` function do in XQL?

   • AIt combines multiple fields into a single array.
   • BIt replaces null values with a default value.
   • CIt removes null values from an array.
   • DIt returns the first non-null value from a list of fields.
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6. 15application · medium

   A query that joins two large datasets is timing out. The analyst only needs a few fields from each dataset. Which optimization is most effective?

   • AIncrease the timeout value for the query.
   • BUse a subquery to filter the second dataset.
   • CRemove the fields command and return all fields.
   • DUse the fields command before the join to project only the needed fields from each dataset.
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