CISM Information Security Programme Practice Question
An organization is implementing a defense-in-depth strategy. Which of the following control combinations BEST exemplifies this principle?
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
✓
Network segmentation, intrusion detection systems, and full-disk encryption
Defense-in-depth uses multiple layers of controls. Network segmentation, IDS, and encryption provide preventive, detective, and corrective layers at different points.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
A single firewall with access control lists
Why it's wrong here
Single layer does not provide depth.
- ✗
Antivirus software on all endpoints
Why it's wrong here
Only one layer at the endpoint.
- ✗
Physical locks on server room doors and CCTV
Why it's wrong here
Physical controls only, no IT layer depth.
- ✓
Network segmentation, intrusion detection systems, and full-disk encryption
Why this is correct
Multiple overlapping controls across network, host, and data layers.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CISM practice question is part of Courseiva's free ISACA 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 CISM exam.