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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.
What is the duration, language, and format of Docker Certified Associate Exam
- Type of Questions: Multiple choice, Multiple answers
- language: English
- Number of Questions: 55
- Passing score: 65%
- Length of Examination: 90 mins
Reference: https://dockerlabs.collabnix.com/docker/dca.html
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Docker DCA Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Image Creation, Management, and Registry | 20% | - Display layers of a Docker image - Describe how an image registry works - Identify and display the main parts of a Dockerfile - Utilize a registry to store an image - Inspect images and report specific attributes using filter and format - Describe options, such as add, copy, volumes, expose, entry point - Use CLI commands such as list, delete, prune, rmi, etc. to manage images - Apply a file to create a new image - Describe the use of Dockerfile - Describe how image layers work - Describe how to set up and use a local registry - Demonstrate tagging an image - Give examples on how to create an efficient image via a Dockerfile |
| Topic 2: Installation and Configuration | 15% | - Interpret errors to troubleshoot installation issues without assistance - Describe namespaces, cgroups, and configuration of certificates - Describe the interaction between Docker and Linux - Outline the sizing requirements prior to installation - Complete setup of repo, select a storage driver, and complete installation of Docker engine on multiple platforms - Setup swarm, configure managers, add nodes, and setup the backup schedule - Demonstrate the ability to upgrade the Docker engine - Use the install command to install DTR (Docker Trusted Registry) - Create and manager user and teams - Describe the use of UCP (Universal Control Plane) - Configure logging drivers (splunk, journald, etc.) |
| Topic 3: Storage and Volumes | 10% | - Describe the different graph driver storage backends - Describe the use of tmpfs for ephemeral storage - Describe how to use a volume plugin (local vs. NFS) - Describe how volumes work with containers - Describe the storage models available for DTR (NFS, local) - Identify the steps to take to clean up unused images on a filesystem and DTR |
| Topic 4: Networking | 15% | - Identify which IP and port a container is externally accessible on - Describe the different types and use cases for the built-in network drivers - Understand the Container Network Model and how it interfaces with the Docker engine and network and IPAM drivers - Describe the differences between "host" and "ingress" port publishing mode - Troubleshoot container and engine logs to understand a connectivity issue between containers - Describe how to install a remote driver to a specific infrastructure provider - Configure Docker to use external DNS - Publish a port so that an application is accessible externally - Create a Docker bridge network for a developer to use for their containers |
| Topic 5: Security | 15% | - Compare the UCP workers and managers - Describe the process to sign a Docker image - Describe the security architecture and responsibilities of the Docker EE platform - Describe MTLS and identity roles - Describe swarm default security - Describe MTLS - Enable Docker Content Trust - Describe identity roles - Describe the difference between UCP and DTR - Describe default engine security - Configure RBAC with UCP - Describe UCP and DTR integration with LDAP/AD |
| Topic 6: Orchestration | 25% | - State the differences between running a container vs running a service - Describe and demonstrate how to use replication mode - Manipulate a running stack of services - Increase number of replicas - Describe how to deploy containerized workloads as Kubernetes pods and deployments - Describe the difference between global and replicated services - Mount volumes - Convert an application deployment into a stack file using a YAML compose file with "docker stack deploy" - Demonstrate steps to lock a swarm cluster - Extend the instructions to run individual containers into running services under swarm - Add networks, publish ports - Interpret the output of "docker inspect" commands - Describe how a Dockerized application communicates with legacy systems - Complete the setup of a swarm mode cluster - Identify the steps needed to troubleshoot a service not deploying - Describe how to provide configuration to Kubernetes pods using configMaps and secrets |
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