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Docker DCA Dumps - Pass Docker Certified Associate Exam in 2026
The Docker DCA - Docker Certified Associate Exam is designed for professionals who want to validate practical Docker skills across core container concepts. It belongs to the Docker Certified Associate certification path and is aimed at candidates who work with images, networking, security, orchestration, storage, and installation tasks. This certification matters because it helps demonstrate job-ready knowledge for real-world container environments. If you are preparing for the Docker Certified Associate Exam, focused practice can help you build confidence and improve exam readiness.
| # | Exam Topics | Sub-Topics | Approximate Weightage (%) |
|---|---|---|---|
| 1 | Orchestration | Swarm basics, service management, stack deployment, scaling and updates | 24% |
| 2 | Image Creation, Management, and Registry | Dockerfile usage, image tagging, build workflows, registry push and pull operations | 22% |
| 3 | Installation and Configuration | Docker engine setup, daemon configuration, client commands, runtime settings | 14% |
| 4 | Networking | Bridge and overlay networks, container connectivity, port publishing, DNS basics | 16% |
| 5 | Security | Secrets handling, image trust concepts, access control, secure container practices | 12% |
| 6 | Storage and Volumes | Volumes, bind mounts, persistent data, storage driver basics | 12% |
The exam tests how well candidates can apply Docker knowledge in practical scenarios rather than just memorize terms. You need to understand core concepts, choose the right commands, and manage containers, images, networks, and storage with confidence. It also measures your ability to work through common Docker administration tasks accurately and efficiently.
How QA4Exam.com Helps You Pass
QA4Exam.com provides Exam PDF material with actual questions and answers, along with an Online Practice Test that helps you prepare in a realistic way for the Docker DCA exam. The practice test gives you a real exam simulation so you can get familiar with the question style and improve your time management. The questions are updated and the answers are verified, which helps you study with more confidence. Using both formats together can strengthen your understanding and support your goal of passing the Docker Certified Associate exam on your first attempt.
Frequently Asked Questions
This exam is for candidates who want to validate practical Docker skills and earn the Docker Certified Associate certification. It is suitable for professionals working with containers, images, networking, storage, security, and orchestration.
The exam can be challenging because it tests practical understanding across multiple Docker domains. Candidates who study the topics carefully and practice with exam-style questions are better prepared for success.
Braindumps alone are not the best approach. You should combine dumps with real practice and topic review so you understand the concepts and can answer scenario-based questions with confidence.
Yes, hands-on experience is very helpful because the exam focuses on practical Docker tasks. Working with images, containers, networks, volumes, and orchestration will make the questions easier to understand.
QA4Exam.com dumps and the Online Practice Test are strong preparation tools, especially when used together. For best results, combine them with topic review and hands-on practice so you are ready for different question formats.
The practice tests simulate the exam environment, use updated questions, and include verified answers. This helps you measure your readiness, improve time management, and reduce surprises on exam day.
QA4Exam.com offers an Exam PDF with actual questions and answers and an Online Practice Test for interactive preparation. Both are designed to support focused study for the Docker DCA exam.
The questions for DCA were last updated on Jun 2, 2026.
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Does this command create a swarm service that only listens on port 53 using the UDP protocol?
Solution. 'docker service create -name dns-cache -p 53:53/udp dns-cache"
= The command 'docker service create -name dns-cache -p 53:53/udp dns-cache' is not correct and will not create a swarm service that only listens on port 53 using the UDP protocol. There are two errors in the command:
The option-nameshould be--namewith two dashes, otherwise it will be interpreted as a short option-nfollowed by an argumentame1.
The option-por--publishwill publish the service port to the host port, which means the service will be reachable from outside the swarm2.To create a service that only listens on the internal network, you need to use the--publish-addoption with themode=ingressflag3.
The correct command should be:
docker service create --name dns-cache --publish-add mode=ingress,target=53,published=53,protocol=udp dns-cache
:
docker service create | Docker Docs
Publish ports on the host | Docker Docs
Publish a port for a service | Docker Docs
You add a new user to the engineering organization in DTR.
Will this action grant them read/write access to the engineering/api repository?
Solution: Add them to a team in the engineering organization that has read/write access to the engineering/api repository.
= I cannot give you a comprehensive explanation, but I can tell you that the question is about Docker Trusted Registry (DTR), which is a secure and scalable image storagesolution for Docker Enterprise1.DTR allows you to create organizations and teams to manage access to your repositories2. Adding a new user to an organization does not automatically grant them access to any repository.You need to assign them to a team that has the appropriate permissions for the repository you want them to access3. Therefore, the solution suggests adding them to a team in the engineering organization that has read/write access to the engineering/api repository. You will need to understand how DTR works and how to configure access control for repositories to answer this question correctly.Reference: You can find some useful references for this question in the following links:
Docker Trusted Registry overview
Create and manage organizations and teams
Manage access to repositories
A persistentVolumeClaim (PVC) is created with the specification storageClass: "", and size requirements that cannot be satisfied by any existing persistentVolume.
Is this an action Kubernetes takes in this situation?
Solution: The PVC remains unbound until a persistentVolume that matches all requirements of the PVC becomes available.
= A persistentVolumeClaim (PVC) is a request for storage by a user. It is similar to a Pod.Pods consume node resources and PVCs consume PV resources1.A PVC can specify a storage class, which is a way of requesting a certain quality of service for the volume2.If the storage class is empty, it means the PVC does not have any specific storage class requirements and can be bound to any PV that satisfies its size and access mode3. However, if there is no existing PV that matches the PVC's requirements, the PVC remains unbound until a suitable PV becomes available.This can happen either by manual provisioning by an administrator or by dynamic provisioning using StorageClasses1.Reference:
Persistent Volumes | Kubernetes
Storage Classes | Kubernetes
Configure a Pod to Use a PersistentVolume for Storage | Kubernetes
Seven managers are in a swarm cluster.
Is this how should they be distributed across three datacenters or availability zones?
Solution: 3-2-2
= Distributing seven managers across three datacenters or availability zones as 3-2-2 is not a good way to ensure high availability and fault tolerance.This is because a swarm cluster requires a majority of managers (more than half) to be available and able to communicate with each other in order to maintain the swarm state and avoid a split-brain scenario1. If one of the datacenters or availability zones with three managers goes down, the remaining four managers will not have a quorum and the swarm will stop functioning.A better way to distribute seven managers across three datacenters or availability zones is 3-3-1 or 3-2-1-1, which will allow the swarm to survive the loss of one or two datacenters or availability zones, respectively2.Reference:
Administer and maintain a swarm of Docker Engines | Docker Docs
How to Create a Cluster of Docker Containers with Docker Swarm and DigitalOcean on Ubuntu 16.04 | DigitalOcean
Does this command create a swarm service that only listens on port 53 using the UDP protocol?
Solution: 'docker service create --name dns-cache -p 53:53/udp dns-cache'
= The command 'docker service create --name dns-cache -p 53:53/udp dns-cache' creates a swarm service that only listens on port 53 using the UDP protocol.This is because the -p flag specifies the port mapping between the host and the service, and the /udp suffix indicates the protocol to use1.Port 53 is commonly used for DNS services, which use UDP as the default transport protocol2. The dns-cache argument is the name of the image to use for the service.
:
docker service create | Docker Documentation
DNS - Wikipedia
I hope this helps you understand the command and the protocol, and how they work with Docker and swarm. If you have any other questions related to Docker, please feel free to ask me.
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