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DCA – Docker Certified Associate (DCA) Exam

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Showing 4–6 of 10 questions

Question 4

Which of the following are types of namespaces used by Docker to provide isolation? (Choose 2.)

Select all that apply, then click Submit answer.

  • ○

    Host
  • ○

    Network
  • ○

    Process ID
  • ○

    Authentication
  • ○

    Storage
Question 5

You are pulling images from a Docker Trusted Registry installation configured to use self-signed certificates, and this error appears:

'x509: certificate signed by unknown authority'.

You already downloaded the Docker Trusted Registry certificate authority certificate from https://dtr.example.com/ca.

How do you trust it? (Select two.)

Select all that apply, then click Submit answer.

  • ○

    Place the certificate in '/etc/docker/dtr/dtr.example.com.crt' and restart the Docker daemon on all cluster nodes.
  • ○

    Place the certificate in your OS certificate path, trust the certificate system-wide, and restart the Docker daemon across all cluster nodes.
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    Pass '-trust-certificate ca.crt' to the Docker client.
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    Pass --insecure-registry to the Docker client.
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    Place the certificate in '/etc/docker/certs.d/dtr.example com/ca.crt' on all cluster nodes.
Question 6

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?

Select an option, then click Submit answer.

  • ○

    'docker inspect http'
  • ○

    'docker service inspect http'
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    'docker service ps http'
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    'docker ps http'