Introduction to Docker Certified Associate Exam
Docker Certified Associate (DCA) certification serves as a foundational benchmark for real-world container technology expertise with Docker Enterprise Edition. Candidates for DCA Exam are seeking to prove fundamental Docker containerization technology knowledge and skills. Before taking this exam, exam aspirants ought to have a solid fundamental information of the concepts shared in the preparation guide as well as on containerization.
It is suggested that professionals accustomed to the ideas and also the technologies represented here by taking relevant training courses. Candidates are expected to have a strong understanding of core docker services, docker images, docker container, and their cmdlets. After passing this exam, candidates get a certificate from Docker that helps them to demonstrate their proficiency in Docker containerization technology to their clients and employers.
The benefit of obtaining the Docker Certified Associate Exam Certification
This accreditation is a portable proof of skills in containerization technology.
This certification will be judging your skills and knowledge on your understanding of Docker containerization technology concepts & Understanding of how to operate on Docker.
DCA credential delivers higher earning potential and increased promotion opportunities because it shows a good understanding of Docker containerization technology.
DCA Exam provide proven knowledge to use the tools to complete the task efficiently and cost-effectively than the other non-certified professionals lack in doing so.
DCA Certifications provide opportunities to get a job easily in which they are interested in instead of wasting years and ending without getting any experience.
Reference: https://dockerlabs.collabnix.com/docker/dca.html
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Docker DCA Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Networking | 15% | - Publish a port so that an application is accessible externally - Describe the differences between "host" and "ingress" port publishing mode - 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 - Identify which IP and port a container is externally accessible on - Create a Docker bridge network for a developer to use for their containers - Describe how to install a remote driver to a specific infrastructure provider - Configure Docker to use external DNS - Describe the different types and use cases for the built-in network drivers |
| Topic 2: Image Creation, Management, and Registry | 20% | - Give examples on how to create an efficient image via a Dockerfile - Utilize a registry to store an image - Display layers of a Docker image - Describe how an image registry works - Inspect images and report specific attributes using filter and format - Apply a file to create a new image - Describe the use of Dockerfile - Describe options, such as add, copy, volumes, expose, entry point - Use CLI commands such as list, delete, prune, rmi, etc. to manage images - Describe how image layers work - Identify and display the main parts of a Dockerfile - Demonstrate tagging an image - Describe how to set up and use a local registry |
| Topic 3: Storage and Volumes | 10% | - Identify the steps to take to clean up unused images on a filesystem and DTR - Describe the use of tmpfs for ephemeral storage - Describe how to use a volume plugin (local vs. NFS) - Describe the storage models available for DTR (NFS, local) - Describe how volumes work with containers - Describe the different graph driver storage backends |
| Topic 4: Security | 15% | - Describe MTLS - Compare the UCP workers and managers - Describe the security architecture and responsibilities of the Docker EE platform - Describe default engine security - Describe UCP and DTR integration with LDAP/AD - Describe identity roles - Describe swarm default security - Describe MTLS and identity roles - Configure RBAC with UCP - Describe the difference between UCP and DTR - Describe the process to sign a Docker image - Enable Docker Content Trust |
| Topic 5: Orchestration | 25% | - Mount volumes - Manipulate a running stack of services - Describe how to provide configuration to Kubernetes pods using configMaps and secrets - Describe how a Dockerized application communicates with legacy systems - Describe the difference between global and replicated services - Add networks, publish ports - Complete the setup of a swarm mode cluster - Describe how to deploy containerized workloads as Kubernetes pods and deployments - Interpret the output of "docker inspect" commands - Increase number of replicas - 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" - Demonstrate steps to lock a swarm cluster - State the differences between running a container vs running a service - Identify the steps needed to troubleshoot a service not deploying - Describe and demonstrate how to use replication mode |
| Topic 6: Installation and Configuration | 15% | - Describe namespaces, cgroups, and configuration of certificates - Demonstrate the ability to upgrade the Docker engine - Interpret errors to troubleshoot installation issues without assistance - Setup swarm, configure managers, add nodes, and setup the backup schedule - Describe the interaction between Docker and Linux - Complete setup of repo, select a storage driver, and complete installation of Docker engine on multiple platforms - Configure logging drivers (splunk, journald, etc.) - Use the install command to install DTR (Docker Trusted Registry) - Outline the sizing requirements prior to installation - Create and manager user and teams - Describe the use of UCP (Universal Control Plane) |
