Docker DCA Practice Test - Questions Answers, Page 18

An application image runs in multiple environments, with each environment using different certificates and ports. Is this a way to provision configuration to containers at runtime?

Solution: Create a Dockerfile for each environment, specifying ports and ENV variables for certificates.

Can this set of commands identify the published port(s) for a container?

Solution: 'docker network inspect', 'docker port'

In Docker Trusted Registry, is this how a user can prevent an image, such as 'nginx:latest', from being overwritten by another user with push access to the repository?

Solution: Remove push access from all other users.

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 container on the bridge network.

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

Solution: cgroups

Will this configuration achieve fault tolerance for managers in a swarm?

Solution: one manager node for two worker nodes

The Kubernetes yaml shown below describes a networkPolicy.

Will the networkPolicy BLOCK this trafftc?

Solution. a request issued from a pod bearing the tier: api label, to a pod bearing the tier: backend label

The Kubernetes yaml shown below describes a networkPolicy.

Will the networkPolicy BLOCK this trafftc?

Solution. a request issued from a pod bearing only the tier: frontend label, to a pod bearing the tier: backend label

You want to create a container that is reachable from its host's network.

Does this action accomplish this?

Solution. Use network connect to access the container on the bridge network.