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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Storage | 10% | - Configure persistent storage and data management - Backup, restore, and migrate data - Use volumes, bind mounts, and tmpfs |
| Topic 2: Images and Registry | 20% | - Work with Docker Hub and private registries - Write efficient Dockerfiles, multi-stage builds - Sign and verify images with Docker Content Trust - Manage image layers, tagging, and versioning |
| Topic 3: Orchestration | 25% | - Create and manage services, stacks, secrets, and configurations - Perform rolling updates and rollbacks - Deploy and manage Swarm clusters |
| Topic 4: Security | 15% | - Secure daemon and API communication - Apply security profiles and capabilities - Manage user access and roles - Scan images for vulnerabilities |
| Topic 5: Networking | 15% | - Understand bridge, overlay, and macvlan networks - Secure and troubleshoot container networking - Expose ports, publish services, and manage DNS |
| Topic 6: Installation and Configuration | 15% | - Set up Docker Enterprise components - Configure daemon options, logging, and storage drivers - Install Docker Engine on Linux, Windows, and macOS |
BraindumpsIT has one of the most comprehensive and top-notch Docker DCA Exam Questions. We eliminated the filler and simplified the Docker Certified Associate (DCA) Exam exam preparation process so you can ace the Docker certification exam on your first try. Our Docker DCA Questions include real-world examples to help you learn the fundamentals of the subject not only for the Docker exam but also for your future job.
NEW QUESTION # 33
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"
Answer: B
Explanation:
Explanation
This command does not create a swarm service that only listens on port 53 using the UDP protocol. The docker service create command creates a new service in a swarm cluster. The --name flag sets the name of the service. The -p or --publish flag publishes a port or a range of ports to the swarm. The --constraint flag applies a constraint to limit the set of nodes where the task can be scheduled. The networking.protocol.udp is not a valid constraint and will cause an error. To create a swarm service that only listens on port 53 using the UDP protocol, you need to use -p 53:53/udp instead. References:
https://docs.docker.com/engine/reference/commandline/service_create/,
https://docs.docker.com/engine/reference/commandline/service_create/#publish-service-ports-externally-to-the-s
https://docs.docker.com/engine/reference/commandline/service_create/#specify-service-constraints-constraint
NEW QUESTION # 34
Which of the following commands is used to display system-wide Docker configuration on a host?
Answer: C
NEW QUESTION # 35
A persistentVolumeClaim (PVC) is created with the specification storageClass: "", and size requirements that cannot be satisfied by any existing persistentVolume.
Is this an action Kubernetes takes in this situation?
Solution: The PVC remains unbound until a persistentVolume that matches all requirements of the PVC becomes available.
Answer: A
Explanation:
Explanation
The PVC remains unbound until a persistentVolume that matches all requirements of the PVC becomes available is an action Kubernetes takes in this situation. A persistentVolumeClaim (PVC) is a request for storage by a user. A PVC specifies the desired size, access modes, and storage class of the storage. A persistentVolume (PV) is a piece of storage in the cluster that has been provisioned by an administrator. A PV has a lifecycle independent of any individual pod that uses it. A PVC is automatically bound to a suitable PV based on its requirements. If no PV exists that matches the PVC, and dynamic provisioning is not enabled, then the PVC remains unbound indefinitely until a matching PV is created. References:
https://kubernetes.io/docs/concepts/storage/persistent-volumes/,
https://kubernetes.io/docs/concepts/storage/persistent-volumes/#lifecycle-of-a-volume-and-claim
NEW QUESTION # 36
Which of the following commands starts a Redis container and configures it to always restart unless it is
explicitly stopped or Docker is restarted?
Answer: C
NEW QUESTION # 37
Will this action upgrade Docker Engine CE to Docker Engine EE?
Solution: Manually download the 'docker-ee' package
Answer: B
Explanation:
= Manually downloading the 'docker-ee' package will not upgrade Docker Engine CE to Docker Engine EE. Docker Engine CE and Docker Engine EE are two different products with different installation methods and features. Docker Engine CE is a free and open source containerization platform, while Docker Engine EE is a subscription-based enterprise-grade platform that offers additional features such as security scanning, certified plugins, and support12. To upgrade from Docker Engine CE to Docker Engine EE, you need to uninstall Docker Engine CE and install Docker Engine EE following the official documentation3. Reference:
What is the exact difference between Docker EE (Enterprise Edition), Docker CE (Community Edition) and Docker (Custom Support) - Stack Overflow Difference between Docker Community Edition (CE) vs Docker Enterprise Edition (EE) in 2020 Install Docker Engine | Docker Docs
NEW QUESTION # 38
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