Get Latest Apr-2026 Real DCA Exam Questions and Answers FREE [Q86-Q106]

Q86. 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 -constraint networking.protocol.udp=true dns-cache”

Q87. 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. environment variables

Q88. Will this sequence of steps completely delete an image from disk in the Docker Trusted Registry?
Solution: Delete the image and delete the image repository from Docker Trusted Registry

Q89. Is this a type of Linux kernel namespace that provides container isolation?
Solution: Storage

Q90. Will this command ensure that overlay traffic between service tasks is encrypted?
Solution:docker network create -d overlay –secure

Q91. Will this command display a list of volumes for a specific container?
Solution: ‘docker container inspect nginx’

Q92. What is the purpose of a client bundle in the Universal Control Plane?

Q93. How do you change the default logging driver for the docker daemon in Linux?

Q94. What is used by the kernel to Isolate resources when running Docker containers?

Q95. Your organization has a centralized logging solution, such as Splunk.
Will this configure a Docker container to export container logs to the logging solution?
Solution: docker logs <container-id>

Q96. The Kubernetes yaml shown below describes a clusterIP service.

Is this a correct statement about how this service routes requests?
Solution: Traffic sent to the IP of this service on port 8080 will be routed to port 80 in a random pod with the label aPP: nginx.

Q97. Does this describe the role of Control Groups (cgroups) when used with a Docker container?
Solution: role-based access control to clustered resources

Q98. During development of an application meant to be orchestrated by Kubernetes, you want to mount the /data directory on your laptop into a container.
Will this strategy successfully accomplish this?
Solution: Create a PersistentVolume with storageciass: “” and hostPath: /data, and a persistentVolumeClaim requesting this PV. Then use that PVC to populate a volume in a pod

Q99. Will this action upgrade Docker Engine CE to Docker Engine EE?
Solution: Manually download the ‘docker-ee’ package

Q100. Can this set of commands identify the published port(s) for a container?
Solution. ‘docker port inspect”, docker container inspect”

Q101. In the context of a swarm mode cluster, does this describe a node?
Solution: an instance of the Docker engine participating in the swarm

Q102. Is this statement correct?
Solution: A Dockerfile provides instructions for building a Docker image

Q103. You configure a local Docker engine to enforce content trust by setting the environment variable DOCKER_C0NTENT_TRUST=l. If myorg/myimage: 1.0 is unsigned, does Docker block this command?
Solution.docker image build, from a Dockeflle that begins FROM myorg/myimage: l1.0

Q104. After creating a new service named ‘http’, you notice that the new service is not registering as healthy. How do
you view the list of historical tasks for that service by using the command line?

Q105. 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: label contraints

Q106. Is this the purpose of Docker Content Trust?
Solution: Verify and encrypt Docker registry TLS.