312-39 Incident Detection And Triage Practice Question
You are writing a SIEM query to detect unauthorized access. The query is too slow. What can you do to optimize it?
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
✓
Restrict the search to a specific time range and relevant indexes.
Filtering by time range and limiting fields are standard practices to optimize SIEM performance.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use wildcard searches on all fields.
Why it's wrong here
Wildcards are very resource-intensive.
- ✗
Add more fields to the search result.
Why it's wrong here
More fields increase processing time.
- ✓
Restrict the search to a specific time range and relevant indexes.
Why this is correct
Reducing the data set size significantly improves performance.
- ✗
Increase the search timeout.
Why it's wrong here
Increasing timeout doesn't fix the performance issue.
About these practice questions
This 312-39 question is part of Courseiva's 202-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
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 EC-Council exam blueprint
This 312-39 practice question is part of Courseiva's free EC-Council 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 312-39 exam.