ISC2 CC Network Security Practice Question
A security administrator is configuring a network device that monitors traffic and generates alerts when suspicious patterns are detected. The device does not block traffic. Which type of system is being deployed?
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
✓
Intrusion Detection System (IDS)
An IDS (Intrusion Detection System) is passive and only alerts, while an IPS actively blocks.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Web Application Firewall (WAF)
Why it's wrong here
WAF is application-specific and can block traffic.
- ✓
Intrusion Detection System (IDS)
Why this is correct
Correct. IDS monitors and alerts without blocking.
- ✗
Intrusion Prevention System (IPS)
Why it's wrong here
IPS is inline and can block traffic.
- ✗
Next-Generation Firewall (NGFW)
Why it's wrong here
NGFW includes IPS and can block.
Go deeper
Related to this question
Learn chapter
Introduction to Security Principles
Key term
IDS
An IDS is a security system that monitors network or system traffic for suspicious activity and alerts administrators to potential threats, but does not actively block them.
Key term
Intrusion Detection System
An Intrusion Detection System (IDS) is a security tool that monitors network traffic or system activities for malicious actions or policy violations and sends alerts to administrators.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CC practice question is part of Courseiva's free ISC2 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 CC exam.