Question 1

Will this command ensure that overlay traffic between service tasks is encrypted?

Solution: docker network create -d overlay -o encrypted=true <network-name>

Options :

A : Yes

B : No

Answer: A

Question 2

Which of the following is supported by control groups?

Options :

A : Manage certificates

B : Collect net

C : Limit CPU usage within a container

D : Isolate processes in a container

Answer: C

Question 3

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

Options :

A : Yes

B : No

Answer: A

Question 4

A docker service 'web' is running with a scale factor of 1 (replicas = 1).

Bob intends to use the command 'docker service update --replicas=3 web'.

Alice intends to use the command 'docker service scale web=3'.

How do the outcomes oft these two commands differ?

Options :

A : Bob-s command results in an error. Alice-s command updates the number of replicas of the 'web' service to 3.

B : Bob-s command only updates the service definition, but no new replicas are started. Alice's command results in the actual scaling up of the 'web' service.

C : Bob-s command updates the number of replicas of the 'web' service to 3. Alice-s command results in an error

D : Both Bob-s and Alice-s commands result in exactly the same outcome, which is 3 instances of the 'web' service.

Answer: D

Question 5

An application image runs in multiple environments, and each environment uses different certificates and ports, what is the best practice to deploy the containers?

Options :

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

B : Create a Dockerfile for each environment, specifying ports and Docker secrets for certificates.

C : Create images that contain the specific configuration for every environment.

D : Create a config file for each environment.

Answer: D

Higher Test Marks with Free Online DCA Exam Practice

Buying Options: