312-85 Threat Hunting And Detection Practice Question
While using ELK Stack for threat hunting, you need to identify beaconing behavior. Which aggregation function would best reveal periodicity in connection intervals?
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
✓
Standard deviation on interval deltas
Calculating the variance or standard deviation of time intervals between connections (the 'delta') is the standard method for identifying programmatic beaconing.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Standard deviation on interval deltas
Why this is correct
Small standard deviation in time deltas indicates high regularity, characteristic of C2 beacons.
- ✗
Sum aggregation on connection counts
Why it's wrong here
Total counts hide the temporal pattern necessary to identify beaconing.
- ✗
Min/Max aggregation on bytes
Why it's wrong here
Volume analysis does not identify frequency or periodicity.
- ✗
Cardinality count on source IPs
Why it's wrong here
Cardinality is used for unique entity counting, not temporal analysis.
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 EC-Council exam blueprint
This 312-85 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 312-85 exam.