ISC Infrastructure And System Security Practice Question
Which THREE of the following are common network security architecture tools?
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).
Firewalls, IDS/IPS, and VPNs are foundational components of a secure network architecture.
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 (IDS).
Why this is correct
Essential for monitoring and alerting.
- ✓
VPN.
Why this is correct
Essential for secure communication.
- ✓
Firewall.
Why this is correct
Essential network security component.
- ✗
Unencrypted Telnet.
Why it's wrong here
This is inherently insecure.
- ✗
Cleartext FTP server.
Why it's wrong here
This is inherently insecure.
About these practice questions
This ISC question is part of Courseiva's 208-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 and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official (ISC)² exam blueprint
This ISC practice question is part of Courseiva's free (ISC)² 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 ISC exam.