Exam KCSA Topic 5 Question 42 Discussion

Actual exam question for Linux Foundation's KCSA exam
Question #: 42
Topic #: 5
Which of the following statements is true concerning the use ofmicroVMsover user-space kernel implementations for advanced container sandboxing?

Suggested Answer: B Vote an answer

* MicroVM-based runtimes(e.g., Firecracker, Kata Containers) use lightweight VMs to provide strong isolation between workloads.
* Compared touser-space kernel implementations(e.g., gVisor), microVMs generally:
* Offerhigher isolation and security(due to VM-level separation).
* Come with ahigher memory and resource overhead per instancethan user-space approaches.
* Incorrect options:
* (A) Orchestration is handled by Kubernetes, not inherently easier with microVMs.
* (C) Compatibility is typically better with microVMs, not worse.
* (D) Isolation is stronger, not weaker.
References:
CNCF Security Whitepaper - Workload isolation: microVMs vs. user-space kernel sandboxes.
Kata Containers Project - isolation trade-offs.

by Herman at Aug 14, 2026, 02:13 PM

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