Docker Certified Associate – Practice Exams

Docker Certified Associate certification is for the DevOps engineers to validate their Docker expertise and experience of utilizing Docker instrument.

This follow check will function your final warm-up earlier than you apply for the primary examination. It is going to assist you analyze your information and follow and also will present a broad perspective on what to anticipate from the certification examination.


  • The check will include 55 MCQs (A number of Selection Questions)

  • Every right reply will grant one mark/level with NO unfavorable marking

  • There are NO non-obligatory questions

  • The time length of this check will likely be 90 minutes

  • Docker has not disclosed any passing standards or cut-off for DCA examination however the cut-off for this follow check is ready to 80% (goal excessive!)

The Syllabus:

This follow check tries to remain as near the DCA certification’s syllabus as doable with the burden of subjects for questions roughly distributed as follows:

  • Orchestration – 25%

  • Picture Creation, Administration, and Registry – 20%

  • Set up and Configuration – 15%

  • Networking – 15%

  • Safety – 15%

  • Storage and Volumes – 10%

Area 1: Orchestration (25% of examination)

  • Perceive Docker Swarm Orchestration

  • Setup of a swarm mode cluster, with managers and employee nodes

  • Variations between operating a container vs operating a service

  • Lock a swarm cluster

  • Examine docker and container utilizing “docker examine” instructions

  • YAML compose file with “docker stack deploy”

  • Replace/Change a operating stack of providers

  • Improve/Lower # of replicas

  • Add networks, publish ports

  • Mount volumes

  • Variations and use-cases for replicated vs world service

  • Troubleshoot a service utilizing logs

  • Making use of node labels

  • Job placement utilizing node labels

  • Utilizing templates with docker service

Area 2: Picture Creation, Administration, and Registry (20% of examination)

  • Describe Dockerfile choices [add, copy, volumes, expose, entrypoint, and so forth)

  • Perceive Dockerfile and create an environment friendly picture

  • Use CLI instructions corresponding to checklist, delete, prune, rmi, and so forth to handle photos

  • Examine photos and report particular attributes utilizing filter and format

  • Tagging, Pushing, Signing, pulling, including a file, Modify a picture

  • Modify a picture to a single layer

  • Configure and setup registry,

  • Show layers of a Docker picture

  • Describe how picture layers work

  • Login, Search, Delete picture in a registry

Area 3: Set up and Configuration (15% of examination)

  • Setup repo, storage driver, set up and improve docker-engine in numerous platforms

  • Configure logging drivers (splunk, journald, and so forth)

  • Setup swarm, configure managers, add nodes, and setup backup schedule

  • Create and handle person and groups

  • Sizing necessities for manufacturing eventualities

  • Perceive namespaces, cgroups, and configuration of certificates

  • Use certificate-based client-server authentication to make sure a Docker daemon has the rights to entry photos on a registry

  • Setup in AWS infrastructure together with HA config

  • Full configuration of backups for UCP and DTR

  • Configure the Docker daemon to start out on boot

Area 4: Networking (15% of examination)

  • Create and setup a bridge community

  • Publish ports and establish ip to entry the containers.

  • Discover and arrange a distinct sort of networks like bridge, host and null community

  • Describe the differing types and use circumstances for the built-in community drivers

  • Introduction to DNS and utilizing exterior DNS

  • Load steadiness visitors between containers

  • Communication between Docker engine, registry, and UCP controllers

  • Deploy service on a Docker overlay community

  • Describe the distinction between “host” and “ingress” port publishing mode

Area 5: Safety (15% of examination)

  • Signing picture

  • Allow Docker Content material Belief

  • Configure (Position-Primarily based Entry Management) RBAC in UCP

  • Overview of Integration of UCP with LDAP/AD

  • Create, obtain and use UCP consumer bundles

  • Securing Docker swarm

  • Distinction between UCP staff and managers

  • The method to make use of exterior certificates with UCP and DTR

Area 6: Storage and Volumes (10% of examination)

  • Numerous graph driver and its utilization

  • Configure device-mapper

  • Examine object storage to dam storage, and clarify which one is preferable when accessible

  • Totally different layers in a docker container and the way volumes are used with docker for persistent storage

  • Cleanup unused photos in filesystem and Registry

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