KCSA Overview OF Cloud Native Security Practice Question
A security team implements mutual TLS (mTLS) between all microservices using Istio Service Mesh. Which principle of cloud native security does this implementation primarily exemplify?
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
✓
Zero-trust network segmentation and encryption in transit
Encrypting data in transit between microservices implements zero-trust networking and defense-in-depth principles within the cluster.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Zero-trust network segmentation and encryption in transit
Why this is correct
mTLS establishes zero-trust by authenticating and encrypting service-to-service communication.
- ✗
Perimeter-based network defense
Why it's wrong here
Cloud-native architectures move away from perimeter defense toward zero-trust.
- ✗
Shared fate computing
Why it's wrong here
Shared fate is not a core security principle.
- ✗
Physical host isolation
Why it's wrong here
Host isolation is handled by hypervisors and node configurations, not service meshes.
About these practice questions
This KCSA question is part of Courseiva's 320-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 CNCF / Linux Foundation exam blueprint
This KCSA practice question is part of Courseiva's free CNCF / Linux Foundation 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 KCSA exam.