CAS-004 Security Architecture Practice Question
In a zero trust architecture, which concept ensures that an attacker who compromises one segment cannot move laterally to other segments?
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
✓
Micro-segmentation
Micro-segmentation divides the network into small, isolated segments and enforces granular access controls, preventing lateral movement.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Software-defined perimeter
Why it's wrong here
SDP hides network resources but does not inherently segment east-west traffic.
- ✗
Defense-in-depth layering
Why it's wrong here
Defense-in-depth is a broad strategy, not a specific lateral movement control.
- ✗
Identity-centric access
Why it's wrong here
Identity-centric access verifies users/devices but does not segment networks.
- ✓
Micro-segmentation
Why this is correct
Correct – micro-segmentation isolates workloads and limits lateral movement.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CAS-005 practice question is part of Courseiva's free CompTIA 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 CAS-005 exam.