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[General] Docker DCA Dumps PDF - Pass Exam Immediately (2026)

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【General】 Docker DCA Dumps PDF - Pass Exam Immediately (2026)

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The DCA exam consists of 55 multiple-choice questions that must be completed within 90 minutes. DCA exam is computer-based and can be taken remotely or at a certified testing center. The passing score for the exam is 65%, and candidates who pass the exam receive a digital badge and certificate that validates their proficiency in Docker technology. The DCA Certification is valid for two years, after which candidates must renew their certification to remain current with the latest Docker technologies and practices.
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Docker Certified Associate (DCA) Exam Sample Questions (Q100-Q105):NEW QUESTION # 100
Will this command mount the host's '/data1 directory to the ubuntu container in read-only mode?
Solution. 'docker run -v /data:/mydata -mode readonly ubuntu'
  • A. No
  • B. Yes
Answer: A
Explanation:
The command docker run -v /data:/mydata -mode readonly ubuntu will not mount the host's /data1 directory to the ubuntu container in read-only mode. The command has several errors that prevent it from working correctly. First, the host directory should be /data1 instead of /data, as specified in the question. Second, the option flag should be --mode instead of -mode, and it should be placed before the image name. Third, the mode value should be ro instead of readonly, as per the Docker documentation1. The correct command should be docker run -v /data1:/mydata --mode ro ubuntu, which will mount the host's /data1 directory as a read-only volume at /mydata inside the container1. References:
* docker run | Docker Docs

NEW QUESTION # 101
Will this command list all nodes in a swarm cluster from the command line?
Solution: 'docker swarm nodes'
  • A. No
  • B. Yes
Answer: A

NEW QUESTION # 102
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
  • A. Yes
  • B. No
Answer: A
Explanation:
Label constraints can be used to schedule containers to meet the security policy requirements. Label constraints allow you to specify which nodes a service can run on based on the labels assigned to the nodes1.
For example, you can label the nodes that are intended for development with env=dev and the nodes that are intended for production with env=prod. Then, you can use the --constraint flag when creating a service to restrict it to run only on nodes with a certain label value. For example, docker service create --name dev-app
--constraint 'node.labels.env == dev' ... will create a service that runs only on development nodes2. Similarly, docker service create --name prod-app --constraint 'node.labels.env == prod' ... will create a service that runs only on production nodes3. This way, you can ensure that development and production containers are running on separate nodes in a given Swarm cluster. References:
* Add labels to swarm nodes
* Using placement constraints with Docker Swarm
* Multiple label placement constraints in docker swarm

NEW QUESTION # 103
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: resource reservation
  • A. No
  • B. Yes
Answer: A
Explanation:
Explanation
Resource reservation cannot be used to schedule containers to meet the security policy requirements, because resource reservation only affects the available resources on a node and does not restrict which containers can run on which nodes. According to the official documentation, resource reservation is used to ensure that a service has enough resources to run.
References: https://docs.docker.com/engine/s ... -cpus-for-a-service

NEW QUESTION # 104
Are these conditions sufficient for Kubernetes to dynamically provision a persistentVolume, assuming there are no limitations on the amount and type of available external storage?
Solution: A persistentVolumeClaim is created that specifies a pre-defined storageClass.
  • A. Yes
  • B. No
Answer: A
Explanation:
Explanation
= The conditions are sufficient for Kubernetes to dynamically provision a persistentVolume, because a storageClass defines the provisioner and parameters for creating a volume on-demand. A persistentVolumeClaim that specifies a storageClass triggers the dynamic provisioning process, and Kubernetes will automatically create and bind a persistentVolume that matches the request. This eliminates the need for manual intervention by cluster administrators to provision storage volumes. References:
* Dynamic Volume Provisioning | Kubernetes
* Persistent volumes and dynamic provisioning | Google Kubernetes Engine ...
* Dynamic Provisioning and Storage Classes in Kubernetes

NEW QUESTION # 105
......
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