DCA Question #61: Real Exam Question with Answer & Explanation

The correct answer is B: No. The mnt (mount) Linux kernel namespace is not disabled by default and is routinely used by Docker containers for filesystem isolation.

Submitted by valeria.br· Apr 18, 2026Security

Question

Is this a Linux kernel namespace that is disabled by default and must be enabled at Docker engine runtime to be used? Solution: mnt

Options

AYes
BNo

Explanation

The mnt (mount) Linux kernel namespace is not disabled by default and is routinely used by Docker containers for filesystem isolation.

Common mistakes.

A. The mnt namespace is a core component of containerization, enabled by default, and does not require special runtime flags for Docker to use it.

Concept tested. Docker and Linux namespaces (mnt)

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

Topics

#Linux Namespaces#Container Isolation#Docker Runtime#Filesystem Isolation

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