312-39 Cyber Threats Iocs And Attack Methodology Practice Question
Which TWO of the following are considered indicators of a 'Data Exfiltration' attempt?
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
✓
Increased DNS request volume (DNS Tunneling)
Exfiltration is characterized by large, anomalous outbound transfers and the use of unusual protocols.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Multiple failed login attempts
Why it's wrong here
This is an authentication/brute-force indicator.
- ✗
System clock synchronization errors
Why it's wrong here
This is usually a configuration or Kerberos issue.
- ✗
Installation of new system drivers
Why it's wrong here
This is typically associated with rootkit installation.
- ✓
Increased DNS request volume (DNS Tunneling)
Why this is correct
DNS tunneling uses small, frequent requests to move data.
- ✓
High volume of outbound traffic to a foreign IP
Why this is correct
Large outbound spikes are common for exfiltration.
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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.