KCSA Platform Security Practice Question
Which THREE advanced container runtime or image security features help prevent container breakout exploits? (Choose three)
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
✓
Using sandboxed container runtimes (such as Kata Containers or gVisor) for strong isolation
Container breakouts are mitigated by dropping unnecessary capabilities, enforcing seccomp profiles, and using secure container runtimes or sandboxed runtimes like gVisor.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Using sandboxed container runtimes (such as Kata Containers or gVisor) for strong isolation
Why this is correct
Sandboxed runtimes provide a hardware virtualization or user-space kernel layer between containers and the host.
- ✗
Running all containers in privileged mode
Why it's wrong here
Privileged mode disables almost all security isolation and increases breakout risks.
- ✗
Mounting host /proc and /sys directories in read-write mode
Why it's wrong here
Mounting host proc/sys directories in read-write mode enables severe container escape vulnerabilities.
- ✓
Applying restrictive Seccomp profiles to block sensitive system calls
Why this is correct
Seccomp filtering prevents containerized processes from invoking dangerous kernel system calls.
- ✓
Dropping dangerous capabilities like CAP_SYS_ADMIN, CAP_NET_RAW, and CAP_SYS_PTRACE
Why this is correct
Dropping unnecessary capabilities restricts container processes from performing privileged operations.
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.