DCA Question #62: Real Exam Question with Answer & Explanation

The correct answer is B: No. The net (network) Linux kernel namespace is not disabled by default and is used by Docker for network isolation.

Submitted by anjalisingh· Apr 18, 2026Networking

Question

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

The net (network) Linux kernel namespace is not disabled by default and is used by Docker for network isolation.

Common mistakes.

A. The net namespace is a core feature for container network isolation, enabled by default, and Docker uses it without requiring specific runtime daemon flags.

Concept tested. Docker and Linux namespaces (net)

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

#Linux Namespaces#Network Namespace#Docker Networking#Container Isolation

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