ISC2 CC Network Security Practice Question
An organization wants to implement a network security device that can block malicious traffic in real-time and must be placed inline. Which device should be chosen?
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 Prevention System (IPS)
An Intrusion Prevention System (IPS) is inline and can actively block threats, unlike an IDS which only alerts.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Vulnerability scanner
Why it's wrong here
A vulnerability scanner identifies weaknesses but does not block traffic.
- ✗
Packet sniffer
Why it's wrong here
A packet sniffer only captures traffic for analysis.
- ✗
Intrusion Detection System (IDS)
Why it's wrong here
An IDS is passive and only alerts.
- ✓
Intrusion Prevention System (IPS)
Why this is correct
An IPS is inline and can block traffic.
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
Access Control List
An Access Control List is a set of rules that decides which traffic is allowed or denied entry to a network or device.
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JA
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.