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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
Docker DCA Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Storage and Volumes | 10% | - Describe how to use a volume plugin (local vs. NFS) - Describe the use of tmpfs for ephemeral storage - Describe how volumes work with containers - Describe the storage models available for DTR (NFS, local) - Describe the different graph driver storage backends - Identify the steps to take to clean up unused images on a filesystem and DTR |
| Topic 2: Installation and Configuration | 15% | - Create and manager user and teams - Describe the interaction between Docker and Linux - Use the install command to install DTR (Docker Trusted Registry) - Demonstrate the ability to upgrade the Docker engine - Describe namespaces, cgroups, and configuration of certificates - Setup swarm, configure managers, add nodes, and setup the backup schedule - 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 use of UCP (Universal Control Plane) - Interpret errors to troubleshoot installation issues without assistance - Configure logging drivers (splunk, journald, etc.) |
| Topic 3: Orchestration | 25% | - Interpret the output of "docker inspect" commands - Describe the difference between global and replicated services - Mount volumes - Manipulate a running stack of services - Convert an application deployment into a stack file using a YAML compose file with "docker stack deploy" - Describe how a Dockerized application communicates with legacy systems - Describe how to provide configuration to Kubernetes pods using configMaps and secrets - Increase number of replicas - Complete the setup of a swarm mode cluster - Add networks, publish ports - Describe and demonstrate how to use replication mode - 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 - Identify the steps needed to troubleshoot a service not deploying - Describe how to deploy containerized workloads as Kubernetes pods and deployments |
| Topic 4: Networking | 15% | - 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 - Configure Docker to use external DNS - Create a Docker bridge network for a developer to use for their containers - Troubleshoot container and engine logs to understand a connectivity issue between containers - Identify which IP and port a container is externally accessible on - Describe how to install a remote driver to a specific infrastructure provider - Publish a port so that an application is accessible externally - Describe the different types and use cases for the built-in network drivers |
| Topic 5: Security | 15% | - Enable Docker Content Trust - Describe identity roles - Compare the UCP workers and managers - Describe the difference between UCP and DTR - Describe swarm default security - Describe MTLS - Configure RBAC with UCP - Describe the security architecture and responsibilities of the Docker EE platform - Describe the process to sign a Docker image - Describe default engine security - Describe MTLS and identity roles - Describe UCP and DTR integration with LDAP/AD |
| Topic 6: Image Creation, Management, and Registry | 20% | - Describe options, such as add, copy, volumes, expose, entry point - Use CLI commands such as list, delete, prune, rmi, etc. to manage images - Utilize a registry to store an image - Display layers of a Docker image - Inspect images and report specific attributes using filter and format - Identify and display the main parts of a Dockerfile - Demonstrate tagging an image - Describe the use of Dockerfile - Apply a file to create a new image - Describe how to set up and use a local registry - Describe how image layers work - Describe how an image registry works - Give examples on how to create an efficient image via a Dockerfile |
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