ISC2 CC Network Security Practice Question
A network administrator needs to segment traffic and isolate sensitive systems. Which two technologies can achieve this? (Choose TWO.)
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
✓
VLANs
VLANs provide logical segmentation at Layer 2, and subnetting divides IP networks, often used with routing to isolate traffic. DMZ is a specific segment for public servers, not general segmentation. Firewalls and IDS are security devices, not segmentation technologies.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Intrusion Detection System
Why it's wrong here
IDS monitors traffic, does not segment.
- ✓
VLANs
Why this is correct
Correct. VLANs segment traffic on a switch.
- ✗
Stateful firewall
Why it's wrong here
Firewalls control traffic between segments, but do not create segments.
- ✗
DMZ
Why it's wrong here
DMZ is a specific type of segment, not a general technology.
- ✓
Subnetting
Why this is correct
Correct. Subnetting divides the IP address space for isolation.
Visual reference
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
DMZ
A DMZ (demilitarized zone) is a network segment that sits between an internal private network and the public internet, hosting publicly accessible services while keeping the internal network isolated.
About these practice questions
This CC question is part of Courseiva's 976-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 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.