DCA Question #121: Real Exam Question with Answer & Explanation

The correct answer is B: No. Linux namespaces provide process isolation for containers but do not limit resource usage such as CPU or memory.

Submitted by brentm· Apr 18, 2026Security

Question

Will this Linux kernel facility limit a Docker container's access to host resources, such as CPU or memory? Solution: namespaces

Linux namespaces provide process isolation for containers but do not limit resource usage such as CPU or memory.

Common mistakes.

A. Namespaces are designed for isolation, not for setting resource limits; that functionality is handled by cgroups.

Concept tested. Linux namespaces vs. resource limiting

Reference. https://docs.docker.com/engine/docker-overview/#namespaces

#Namespaces#Container isolation#Linux kernel facilities#Resource access control

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