XDR-Engineer Detection And Reporting Practice Question
An analyst wants to write an advanced XQL query that correlates network connection events with process execution events using a common join key (`causality_id`). Which XQL command operator is used to combine two datasets based on a matching field?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
join
In XQL, the `join` operator is used to combine datasets or query streams based on shared keys such as causality IDs.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
join
Why this is correct
The 'join' operator in XQL merges two dataset streams based on matching field values.
- ✗
link
Why it's wrong here
'link' is not the primary relational join command in XQL.
- ✗
merge_streams
Why it's wrong here
'merge_streams' is not a standard XQL operator.
- ✗
combine_tables
Why it's wrong here
'combine_tables' is not part of the XQL command syntax.
About these practice questions
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official Palo Alto Networks exam blueprint
This XDR-Engineer practice question is part of Courseiva's free Palo Alto Networks certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the XDR-Engineer exam.