Latest DCA Exam Questions

You set up an automatic pruning policy on a DTR repository to prune all images using
Apache licenses. What effect does this have on images in this repository?

Seven managers are in a swarm cluster.
Is this how should they be distributed across three datacenters or availability zones?
Solution: 5-1-1

A company's security policy specifies that development and production containers must run
on separate nodes in a given Swarm cluster.
Can this be used to schedule containers to meet the security policy requirements?
Solution: node taints

You want to mount external storage to a particular filesystem path in a container in a
Kubernetes pod. What is the correct set of objects to use for this?

Does this command create a swarm service that only listens on port 53 using the UDP
protocol?
Solution: 'docker service create -name dns-cache -p 53:53/udp dns-cache'

Will this command mount the host's '/data' directory to the ubuntu container in read-only
mode?
Solution: 'docker run -volume /data:/mydata:ro ubuntu'

The Kubernetes yaml shown below describes a networkPolicy.

Will the networkPolicy BLOCK this traffic?
Solution: a request issued from a pod lacking the tier: api label, to a pod bearing the tier:
backend label

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: Provision a Docker config object for each environment.

You created a new service named 'http' and discover it is not registering as healthy. Will
this command enable you to view the list of historical tasks for this service?

Solution: 'docker inspect http'

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