KCSA Kubernetes Security Fundamentals Practice Question
You need to restrict network traffic so that only pods with the label 'tier=frontend' can communicate with pods labeled 'tier=backend' in the same namespace. Which Kubernetes resource should you create?
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
✓
NetworkPolicy
A NetworkPolicy is used to restrict pod-to-pod and network traffic at the IP/port/label level.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
NetworkPolicy
Why this is correct
NetworkPolicies control ingress and egress traffic for pods.
- ✗
Ingress
Why it's wrong here
Ingress manages external HTTP/HTTPS traffic entering the cluster.
- ✗
FirewallRule
Why it's wrong here
FirewallRule is not a standard Kubernetes resource.
- ✗
Service
Why it's wrong here
Service exposes applications running on a set of pods as a network service.
About these practice questions
Courseiva writes every KCSA question from scratch — 319 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or 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.