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How to study the Docker Certified Associate Exam
The preparation of certification exams could be covered with two resource types. The first one is the study guides, reference books, and study forums that are elaborated and appropriate for building information from the ground up. Apart from the video tutorials and lectures are a good option to ease the pain of through study and are relatively make the study process more interesting nonetheless these demand time and concentration from the learner.
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How to book the Docker Certified Associate Exam
There are the following steps for registering the Docker Certified Associate exam:
- Step 1: Visit to Docker Examity proctors.
- Step 2: Sign up/Login to Docker account.
- Step 3: Make payment for the exam voucher using your credit or debit card.
- Step 4: You will receive exam voucher code on your email and then using that voucher code you can book your exam by selecting dates, time etc.
Reference: https://dockerlabs.collabnix.com/docker/dca.html
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Docker DCA Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Orchestration | 25% | - State the differences between running a container vs running a service - Identify the steps needed to troubleshoot a service not deploying - Increase number of replicas - Interpret the output of "docker inspect" commands - Mount volumes - Describe how a Dockerized application communicates with legacy systems - Add networks, publish ports - Describe how to deploy containerized workloads as Kubernetes pods and deployments - Convert an application deployment into a stack file using a YAML compose file with "docker stack deploy" - Demonstrate steps to lock a swarm cluster - Manipulate a running stack of services - Describe and demonstrate how to use replication mode - Describe how to provide configuration to Kubernetes pods using configMaps and secrets - Describe the difference between global and replicated services - Extend the instructions to run individual containers into running services under swarm - Complete the setup of a swarm mode cluster |
| Security | 15% | - Describe the security architecture and responsibilities of the Docker EE platform - Describe default engine security - Compare the UCP workers and managers - Describe MTLS and identity roles - Describe identity roles - Describe the difference between UCP and DTR - Enable Docker Content Trust - Describe the process to sign a Docker image - Describe swarm default security - Describe UCP and DTR integration with LDAP/AD - Configure RBAC with UCP - Describe MTLS |
| 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 - Demonstrate the ability to upgrade the Docker engine - Outline the sizing requirements prior to installation - Describe the use of UCP (Universal Control Plane) - Setup swarm, configure managers, add nodes, and setup the backup schedule - Configure logging drivers (splunk, journald, etc.) - Describe namespaces, cgroups, and configuration of certificates - Describe the interaction between Docker and Linux - Use the install command to install DTR (Docker Trusted Registry) - Interpret errors to troubleshoot installation issues without assistance |
| Storage and Volumes | 10% | - 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 - Describe the use of tmpfs for ephemeral storage - Describe the storage models available for DTR (NFS, local) - Describe how to use a volume plugin (local vs. NFS) |
| 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 - Publish a port so that an application is accessible externally - Describe the differences between "host" and "ingress" port publishing mode - Configure Docker to use external DNS - Describe how to install a remote driver to a specific infrastructure provider - Describe the different types and use cases for the built-in network drivers - Create a Docker bridge network for a developer to use for their containers - Identify which IP and port a container is externally accessible on |
| Image Creation, Management, and Registry | 20% | - Give examples on how to create an efficient image via a Dockerfile - Describe options, such as add, copy, volumes, expose, entry point - Display layers of a Docker image - Utilize a registry to store an image - Describe how to set up and use a local registry - Inspect images and report specific attributes using filter and format - Use CLI commands such as list, delete, prune, rmi, etc. to manage images - Describe the use of Dockerfile - Demonstrate tagging an image - Describe how image layers work - Apply a file to create a new image - Describe how an image registry works - Identify and display the main parts of a Dockerfile |
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