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The DCA certification exam consists of 55 multiple-choice and multiple-answer questions that test candidates on their understanding of Docker architecture, Docker CLI commands, Dockerfile syntax, container networking, Docker Swarm and Kubernetes orchestration, and Docker Enterprise Edition. DCA exam is timed for 90 minutes, and candidates must score at least 65% to pass. The DCA certification is valid for two years and can be renewed by passing the recertification exam or earning enough points through Docker’s Continuing Education program. By earning the DCA certification, IT professionals can demonstrate their proficiency in Docker technology and enhance their career prospects in the containerization field.
The DCA certification is a valuable credential for professionals who work with Docker. It demonstrates to employers and clients that the candidate has a deep understanding of the Docker platform and its capabilities. Docker Certified Associate (DCA) Exam certification can help candidates stand out in a crowded job market and increase their earning potential. Additionally, certified professionals gain access to the Docker Certified Associate community, which provides opportunities for networking, collaboration, and professional development.
Reference: https://dockerlabs.collabnix.com/docker/dca.html
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| Section | Weight | Objectives |
|---|---|---|
| Security | 15% | - Describe MTLS - Describe identity roles - Describe UCP and DTR integration with LDAP/AD - Compare the UCP workers and managers - Describe swarm default security - Describe MTLS and identity roles - Describe the security architecture and responsibilities of the Docker EE platform - Configure RBAC with UCP - Describe the difference between UCP and DTR - Enable Docker Content Trust - Describe default engine security - Describe the process to sign a Docker image |
| Image Creation, Management, and Registry | 20% | - Describe options, such as add, copy, volumes, expose, entry point - Display layers of a Docker image - Give examples on how to create an efficient image via a Dockerfile - Identify and display the main parts of a Dockerfile - Describe how image layers work - Describe how to set up and use a local registry - Utilize a registry to store an image - Apply a file to create a new image - Describe the use of Dockerfile - Inspect images and report specific attributes using filter and format - Demonstrate tagging an image - Describe how an image registry works - Use CLI commands such as list, delete, prune, rmi, etc. to manage images |
| Orchestration | 25% | - Describe and demonstrate how to use replication mode - Add networks, publish ports - Complete the setup of a swarm mode cluster - Convert an application deployment into a stack file using a YAML compose file with "docker stack deploy" - State the differences between running a container vs running a service - Describe how a Dockerized application communicates with legacy systems - Extend the instructions to run individual containers into running services under swarm - Demonstrate steps to lock a swarm cluster - Mount volumes - Describe how to deploy containerized workloads as Kubernetes pods and deployments - Manipulate a running stack of services - Interpret the output of "docker inspect" commands - Describe the difference between global and replicated services - Describe how to provide configuration to Kubernetes pods using configMaps and secrets - Increase number of replicas - Identify the steps needed to troubleshoot a service not deploying |
| Storage and Volumes | 10% | - Describe how volumes work with containers - Describe the use of tmpfs for ephemeral storage - Identify the steps to take to clean up unused images on a filesystem and DTR - Describe the storage models available for DTR (NFS, local) - Describe how to use a volume plugin (local vs. NFS) - Describe the different graph driver storage backends |
| Networking | 15% | - Publish a port so that an application is accessible externally - Configure Docker to use external DNS - Troubleshoot container and engine logs to understand a connectivity issue between containers - Describe the different types and use cases for the built-in network drivers - Create a Docker bridge network for a developer to use for their containers - Identify which IP and port a container is externally accessible on - Describe the differences between "host" and "ingress" port publishing mode - Understand the Container Network Model and how it interfaces with the Docker engine and network and IPAM drivers - Describe how to install a remote driver to a specific infrastructure provider |
| Installation and Configuration | 15% | - Describe the interaction between Docker and Linux - Interpret errors to troubleshoot installation issues without assistance - Describe namespaces, cgroups, and configuration of certificates - Outline the sizing requirements prior to installation - Setup swarm, configure managers, add nodes, and setup the backup schedule - Configure logging drivers (splunk, journald, etc.) - Describe the use of UCP (Universal Control Plane) - Demonstrate the ability to upgrade the Docker engine - Create and manager user and teams - Use the install command to install DTR (Docker Trusted Registry) - Complete setup of repo, select a storage driver, and complete installation of Docker engine on multiple platforms |
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