CCOA Incident Detection And Response Practice Question
You are monitoring a network and detect a large number of ARP requests from a single host targeting the entire subnet. This is a sign of what?
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
✓
ARP scanning
ARP scanning is a common technique used by attackers to map a network and identify active hosts.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
DNS spoofing
Why it's wrong here
Involves manipulating DNS responses.
- ✗
DHCP starvation
Why it's wrong here
Involves flooding DHCP servers with requests.
- ✓
ARP scanning
Why this is correct
The activity of mapping the local subnet.
- ✗
Network congestion
Why it's wrong here
ARP traffic is usually too light to cause congestion.
Visual reference
About these practice questions
One of 203 original CCOA practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. 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 ISACA exam blueprint
This CCOA practice question is part of Courseiva's free ISACA 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 CCOA exam.