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The DCA exam is a comprehensive test that covers a wide range of topics related to Docker technology. It consists of 55 multiple-choice questions, and candidates are given 90 minutes to complete the exam. DCA exam is designed to assess the candidate's ability to work with Docker in real-world scenarios, and it covers topics such as Docker architecture, Docker CLI, Docker networking, Docker Compose, Docker Swarm, and Docker security. Candidates who pass the DCA exam are considered Docker experts and are eligible to receive the DCA certification, which can help them stand out in the job market and advance their careers in the field of containerization and Docker technology.
Reference: https://dockerlabs.collabnix.com/docker/dca.html
Docker Certified Associate (DCA) certification exam is a challenging and rewarding certification that tests the knowledge and skills of professionals who work with Docker. Docker Certified Associate (DCA) Exam certification is recognized by leading technology companies and organizations, and provides a valuable credential for IT professionals looking to advance their careers in cloud computing, DevOps, and containerization.
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The DCA exam consists of 55 multiple-choice questions that cover a wide range of topics related to Docker containers. DCA exam is designed to test the candidate’s knowledge of Docker installation and configuration, container networking, image creation and management, container orchestration, and security. DCA exam also covers the use of Docker in a DevOps environment, including continuous integration and continuous deployment (CI/CD) pipelines.
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Storage and Volumes | 10% | - Describe the use of tmpfs for ephemeral storage - Describe the storage models available for DTR (NFS, local) - Identify the steps to take to clean up unused images on a filesystem and DTR - Describe the different graph driver storage backends - Describe how to use a volume plugin (local vs. NFS) - Describe how volumes work with containers |
| Topic 2: Image Creation, Management, and Registry | 20% | - Describe the use of Dockerfile - Describe how to set up and use a local registry - Identify and display the main parts of a Dockerfile - Apply a file to create a new image - Display layers of a Docker image - Describe how an image registry works - Describe options, such as add, copy, volumes, expose, entry point - Demonstrate tagging an image - Use CLI commands such as list, delete, prune, rmi, etc. to manage images - Inspect images and report specific attributes using filter and format - Utilize a registry to store an image - Give examples on how to create an efficient image via a Dockerfile - Describe how image layers work |
| Topic 3: Installation and Configuration | 15% | - Complete setup of repo, select a storage driver, and complete installation of Docker engine on multiple platforms - Create and manager user and teams - Configure logging drivers (splunk, journald, etc.) - Describe namespaces, cgroups, and configuration of certificates - Describe the use of UCP (Universal Control Plane) - Demonstrate the ability to upgrade the Docker engine - Use the install command to install DTR (Docker Trusted Registry) - Interpret errors to troubleshoot installation issues without assistance - Describe the interaction between Docker and Linux - Setup swarm, configure managers, add nodes, and setup the backup schedule - Outline the sizing requirements prior to installation |
| Topic 4: Networking | 15% | - Troubleshoot container and engine logs to understand a connectivity issue between containers - 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 - Identify which IP and port a container is externally accessible on - Publish a port so that an application is accessible externally - Describe the different types and use cases for the built-in network drivers - Describe the differences between "host" and "ingress" port publishing mode - Create a Docker bridge network for a developer to use for their containers - Configure Docker to use external DNS |
| Topic 5: Security | 15% | - Describe the security architecture and responsibilities of the Docker EE platform - Compare the UCP workers and managers - Configure RBAC with UCP - Describe the difference between UCP and DTR - Describe identity roles - Describe default engine security - Describe UCP and DTR integration with LDAP/AD - Describe MTLS - Describe the process to sign a Docker image - Enable Docker Content Trust - Describe swarm default security - Describe MTLS and identity roles |
| Topic 6: Orchestration | 25% | - Interpret the output of "docker inspect" commands - State the differences between running a container vs running a service - Complete the setup of a swarm mode cluster - Describe how to deploy containerized workloads as Kubernetes pods and deployments - Extend the instructions to run individual containers into running services under swarm - Convert an application deployment into a stack file using a YAML compose file with "docker stack deploy" - Identify the steps needed to troubleshoot a service not deploying - Describe the difference between global and replicated services - Describe how to provide configuration to Kubernetes pods using configMaps and secrets - Mount volumes - Demonstrate steps to lock a swarm cluster - Add networks, publish ports - Describe and demonstrate how to use replication mode - Increase number of replicas - Manipulate a running stack of services - Describe how a Dockerized application communicates with legacy systems |
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