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How to Prepare For Docker Certified Associate Exam
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.
Reference: https://dockerlabs.collabnix.com/docker/dca.html
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Docker DCA Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Networking | 15% | - Describe the different types and use cases for the built-in network drivers - Configure Docker to use external DNS - Create a Docker bridge network for a developer to use for their containers - Describe the differences between "host" and "ingress" port publishing mode - Identify which IP and port a container is externally accessible on - Publish a port so that an application is accessible externally - Describe how to install a remote driver to a specific infrastructure provider - 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 |
| Orchestration | 25% | - Identify the steps needed to troubleshoot a service not deploying - Increase number of replicas - Mount volumes - Demonstrate steps to lock a swarm cluster - Complete the setup of a swarm mode cluster - Extend the instructions to run individual containers into running services under swarm - State the differences between running a container vs running a service - Describe how a Dockerized application communicates with legacy systems - Convert an application deployment into a stack file using a YAML compose file with "docker stack deploy" - Interpret the output of "docker inspect" commands - Describe how to provide configuration to Kubernetes pods using configMaps and secrets - Manipulate a running stack of services - Describe the difference between global and replicated services - Describe and demonstrate how to use replication mode - Add networks, publish ports - Describe how to deploy containerized workloads as Kubernetes pods and deployments |
| Installation and Configuration | 15% | - Configure logging drivers (splunk, journald, etc.) - Demonstrate the ability to upgrade the Docker engine - Use the install command to install DTR (Docker Trusted Registry) - Describe the use of UCP (Universal Control Plane) - 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 - Outline the sizing requirements prior to installation - Describe namespaces, cgroups, and configuration of certificates - Create and manager user and teams - Interpret errors to troubleshoot installation issues without assistance |
| Security | 15% | - Describe swarm default security - Describe MTLS - Compare the UCP workers and managers - Describe the difference between UCP and DTR - Describe default engine security - Enable Docker Content Trust - Describe the security architecture and responsibilities of the Docker EE platform - Configure RBAC with UCP - Describe MTLS and identity roles - Describe UCP and DTR integration with LDAP/AD - Describe identity roles - Describe the process to sign a Docker image |
| Image Creation, Management, and Registry | 20% | - Use CLI commands such as list, delete, prune, rmi, etc. to manage images - Display layers of a Docker image - Describe the use of Dockerfile - Demonstrate tagging an image - Identify and display the main parts of a Dockerfile - Describe how image layers work - 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 how to set up and use a local registry - Give examples on how to create an efficient image via a Dockerfile - Describe options, such as add, copy, volumes, expose, entry point - Utilize a registry to store an image |
| Storage and Volumes | 10% | - 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) - Identify the steps to take to clean up unused images on a filesystem and DTR - Describe the different graph driver storage backends - Describe how volumes work with containers |
