ISC2 CC Network Security Practice Question
A network administrator needs to segment traffic between departments without additional hardware. Which technology allows this logical separation on a Layer 2 switch?
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
✓
VLAN
VLANs (Virtual Local Area Networks) allow logical segmentation on a switch, separating traffic at Layer 2 without extra hardware.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Subnetting
Why it's wrong here
Subnetting divides IP address space but requires routing devices.
- ✓
VLAN
Why this is correct
Correct. VLANs provide logical segmentation on a Layer 2 switch.
- ✗
VPN
Why it's wrong here
VPNs provide encrypted tunnels over untrusted networks.
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DMZ
Why it's wrong here
A DMZ is a physical or logical network segment for public-facing servers.
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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.