ISC Infrastructure And System Security Practice Question
You are designing a Zero Trust architecture in AWS. Which mechanism should you implement to enforce granular access control between microservices running in EKS without relying on traditional IP-based security groups?
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
✓
AWS App Mesh with Envoy sidecars
AWS App Mesh provides application-level networking, allowing for service-to-service communication control using mutual TLS (mTLS) and fine-grained traffic routing independent of IP addresses.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
VPC Flow Logs
Why it's wrong here
VPC Flow Logs provide visibility but do not enforce access control.
- ✗
AWS WAF
Why it's wrong here
WAF is for HTTP/HTTPS traffic filtering at the edge, not internal microservice communication.
- ✗
Security Groups for Pods
Why it's wrong here
Security Groups for Pods rely on IP-based filtering, which is less granular and more difficult to manage than identity-based service mesh policies.
- ✓
AWS App Mesh with Envoy sidecars
Why this is correct
App Mesh uses Envoy proxies to manage traffic, providing identity-based security rather than network-layer security.
About these practice questions
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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.