Docker Certified Associate (DCA) Practice Exam
Docker Certified Associate - Practice Exams
Docker Certified Associate certification is for the DevOps engineers to validate their Docker skills and expertise of using Docker tool.
This practice test will serve as your ultimate warm-up before you apply for the main exam. It will help you analyze your knowledge and practice and will also provide a broad perspective on what to expect from the certification exam.
Format:
The test will consist of 55 MCQs (Multiple Choice Questions)
Each correct answer will grant one mark/point with NO negative marking
There are NO optional questions
The time duration of this test will be 90 minutes
Docker has not disclosed any passing criteria or cut-off for DCA exam but the cut-off for this practice test is set to 80% (aim high!)
The Syllabus:
This practice test tries to stay as close to the DCA certification's syllabus as possible with the weight of topics for questions roughly distributed as follows:
Orchestration - 25%
Image Creation, Management, and Registry - 20%
Installation and Configuration - 15%
Networking - 15%
Security - 15%
Storage and Volumes - 10%
Domain 1: Orchestration (25% of exam)
Understand Docker Swarm Orchestration
Setup of a swarm mode cluster, with managers and worker nodes
Differences between running a container vs running a service
Lock a swarm cluster
Inspect docker and container using "docker inspect" commands
YAML compose file with "docker stack deploy"
Update/Change a running stack of services
Increase/Decrease # of replicas
Add networks, publish ports
Mount volumes
Differences and use-cases for replicated vs global service
Troubleshoot a service using logs
Applying node labels
Task placement using node labels
Using templates with docker service
Domain 2: Image Creation, Management, and Registry (20% of exam)
Describe Dockerfile options [add, copy, volumes, expose, entrypoint, etc)
Understand Dockerfile and create an efficient image
Use CLI commands such as list, delete, prune, rmi, etc to manage images
Inspect images and report specific attributes using filter and format
Tagging, Pushing, Signing, pulling, adding a file, Modify an image
Modify an image to a single layer
Configure and setup registry,
Display layers of a Docker image
Describe how image layers work
Login, Search, Delete image in a registry
Domain 3: Installation and Configuration (15% of exam)
Setup repo, storage driver, install and upgrade docker-engine in various platforms
Configure logging drivers (splunk, journald, etc)
Setup swarm, configure managers, add nodes, and setup backup schedule
Create and manage user and teams
Sizing requirements for production scenarios
Understand namespaces, cgroups, and configuration of certificates
Use certificate-based client-server authentication to ensure a Docker daemon has the rights to access images on a registry
Setup in AWS infrastructure along with HA config
Complete configuration of backups for UCP and DTR
Configure the Docker daemon to start on boot
Domain 4: Networking (15% of exam)
Create and setup a bridge network
Publish ports and identify ip to access the containers.
Explore and set up a different type of networks like bridge, host and null network
Describe the different types and use cases for the built-in network drivers
Introduction to DNS and using external DNS
Load balance traffic between containers
Communication between Docker engine, registry, and UCP controllers
Deploy service on a Docker overlay network
Describe the difference between "host" and "ingress" port publishing mode
Domain 5: Security (15% of exam)
Signing image
Enable Docker Content Trust
Configure (Role-Based Access Control) RBAC in UCP
Overview of Integration of UCP with LDAP/AD
Create, download and use UCP client bundles
Securing Docker swarm
Difference between UCP workers and managers
The process to use external certificates with UCP and DTR
Domain 6: Storage and Volumes (10% of exam)
Various graph driver and its usage
Configure device-mapper
Compare object storage to block storage, and explain which one is preferable when available
Different layers in a docker container and how volumes are used with docker for persistent storage
Cleanup unused images in filesystem and Registry
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Current Price: FREE
