DCA Question #116: Real Exam Question with Answer & Explanation

The correct answer is B: No. Using docker network attach connects a container to an existing network, which facilitates inter-container communication but does not inherently expose container ports to the host's network.

Submitted by obi.ng· Apr 18, 2026Networking

Question

You want to create a container that is reachable from its host's network. Does this action accomplish this? Solution: Use network attach to access the containers on the bridge network

Options

AYes
BNo

Explanation

Using docker network attach connects a container to an existing network, which facilitates inter-container communication but does not inherently expose container ports to the host's network.

Common mistakes.

A. docker network attach connects a container to an internal network but does not expose its services to the host system.

Concept tested. Docker container network attachment vs. exposure

Reference. https://docs.docker.com/engine/reference/commandline/network_attach/

Topics

#Docker Networking#Bridge Network#Container Reachability#Port Mapping

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