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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.
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Preparation Guide for Docker Certified Associate Exam
Introduction
Docker is one of the open-source technology and very much demanding these days in IT, It had brought a revolution in the container technology, Docker has created a track for certification where an individual can appear and validate their skill set. This certification program will provide Docker Cloud Certified Associate a way to demonstrate their skills. The assessment is based on a rigorous exam using the industry-standard methodology to determine whether a candidate meets Docker's proficiency standards.
According to Docker, a DCA Certified Professional enables organizations will able to provision containers as and when they required using container images.
Certification is evidence of your skills, expertise in those areas in which you like to work. If the candidate wants to work on Docker Containerization technologies and prove his knowledge, certification is offered by Docker. This DCA Exam Certification helps a candidate to validates his skills in Docker Containerization technologies.
In this guide, we will cover the Docker Certified Associate Certification exam, Docker Certified Associate Certified professional salary and all aspects of the Docker Certified Associate Certification.
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Reference: https://dockerlabs.collabnix.com/docker/dca.html
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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Security | 15% | - Describe the process to sign a Docker image - Describe the security architecture and responsibilities of the Docker EE platform - Describe identity roles - Enable Docker Content Trust - Compare the UCP workers and managers - Describe default engine security - Describe MTLS and identity roles - Describe UCP and DTR integration with LDAP/AD - Configure RBAC with UCP - Describe MTLS - Describe the difference between UCP and DTR - Describe swarm default security |
| Topic 2: Storage and Volumes | 10% | - Describe how to use a volume plugin (local vs. NFS) - 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 the different graph driver storage backends |
| Topic 3: Image Creation, Management, and Registry | 20% | - Demonstrate tagging an image - Display layers of a Docker image - Use CLI commands such as list, delete, prune, rmi, etc. to manage images - Describe how image layers work - Give examples on how to create an efficient image via a Dockerfile - Apply a file to create a new image - Inspect images and report specific attributes using filter and format - Describe how an image registry works - Identify and display the main parts of a Dockerfile - Describe the use of Dockerfile - Utilize a registry to store an image - Describe how to set up and use a local registry - Describe options, such as add, copy, volumes, expose, entry point |
| Topic 4: Installation and Configuration | 15% | - Describe namespaces, cgroups, and configuration of certificates - Outline the sizing requirements prior to installation - Complete setup of repo, select a storage driver, and complete installation of Docker engine on multiple platforms - Describe the interaction between Docker and Linux - Setup swarm, configure managers, add nodes, and setup the backup schedule - Describe the use of UCP (Universal Control Plane) - Use the install command to install DTR (Docker Trusted Registry) - Create and manager user and teams - Demonstrate the ability to upgrade the Docker engine - Configure logging drivers (splunk, journald, etc.) - Interpret errors to troubleshoot installation issues without assistance |
| Topic 5: Orchestration | 25% | - Demonstrate steps to lock a swarm cluster - Extend the instructions to run individual containers into running services under swarm - State the differences between running a container vs running a service - Complete the setup of a swarm mode cluster - Identify the steps needed to troubleshoot a service not deploying - Interpret the output of "docker inspect" commands - Convert an application deployment into a stack file using a YAML compose file with "docker stack deploy" - Manipulate a running stack of services - Describe the difference between global and replicated services - Describe how to deploy containerized workloads as Kubernetes pods and deployments - Describe how a Dockerized application communicates with legacy systems - Describe and demonstrate how to use replication mode - Add networks, publish ports - Describe how to provide configuration to Kubernetes pods using configMaps and secrets - Increase number of replicas - Mount volumes |
| Topic 6: Networking | 15% | - Publish a port so that an application is accessible externally - Describe the different types and use cases for the built-in network drivers - Describe how to install a remote driver to a specific infrastructure provider - Describe the differences between "host" and "ingress" port publishing mode - Create a Docker bridge network for a developer to use for their 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 - Troubleshoot container and engine logs to understand a connectivity issue between containers - Configure Docker to use external DNS |
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