ISC2 CC Network Security Practice Question
An organization wants to place its public web server, email server, and DNS server in a network that is accessible from the internet but isolated from the internal corporate network. Which network design should be used?
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
✓
DMZ
A DMZ (demilitarized zone) is a buffer network for public-facing servers.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
DMZ
Why this is correct
Correct. A DMZ hosts public-facing servers with controlled access.
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VPN
Why it's wrong here
VPNs are for encrypted tunnels, not public server placement.
- ✗
VLAN
Why it's wrong here
VLANs provide logical segmentation but are not specifically designed for public access.
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Subnet
Why it's wrong here
A subnet is a logical division, but DMZ is a specific security architecture.
Go deeper
Related to this question
Learn chapter
Network Security Foundations
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.
Key term
DNS
DNS is the system that translates human-friendly domain names like example.com into machine-readable IP addresses so computers can find each other on a network.
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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.