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Reference: https://dockerlabs.collabnix.com/docker/dca.html

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Docker DCA Exam Syllabus Topics:

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