312-85 Intelligence Reporting And Dissemination Practice Question
An analyst is mapping internal incident data to STIX 2.1 objects. You need to link a specific threat actor to the infrastructure they recently utilized. Which object type should you use to link the 'Threat-Actor' object to the 'Infrastructure' object?
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
✓
Relationship
In STIX 2.1, the 'Relationship' object is specifically used to connect two SDOs (Domain Objects) with a defined relationship type such as 'uses'.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Indicator
Why it's wrong here
Indicators are used to detect malicious activity, not link actors to infrastructure.
- ✗
Sighting
Why it's wrong here
Sightings represent evidence of an indicator, not a link between an actor and infrastructure.
- ✓
Relationship
Why this is correct
The Relationship SDO is the formal mechanism to link two SDOs.
- ✗
Observed-Data
Why it's wrong here
Observed-data refers to raw events, not entity relationships.
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.