Get 400+ Docker DCA practice questions free — detailed answers, exam simulations, and realistic scenarios for the Docker Certified Associate exam. Updated March 2026. No signup required.
⚡ Quick Facts
Quick Answer: The Docker DCA (Certified Associate) costs $195, has 55 questions, 90-minute duration, pass score ~65%. Covers installation, image creation, orchestration, networking, security, and storage volumes. ExamCert offers 600+ free practice questions for 2026.
Try these 5 sample questions from our 400+ question bank. Each includes detailed explanations to help you learn.
Which command creates a new Docker Swarm cluster?
docker swarm init initializes a new Swarm cluster and generates join tokens for additional nodes.
What's the difference between a Docker image and a container?
A Docker image is an immutable template; a container is a running instance with a writable layer.
Which Docker networking driver provides container isolation?
The bridge driver creates isolated network segments preventing direct communication between different networks.
How do you persist data in Docker containers?
Volumes and bind mounts allow data to persist beyond container lifecycle.
What is a multi-stage Docker build?
Multi-stage builds separate build dependencies from runtime, producing smaller production images.
What is a key best practice for solutions?
Security and scalability should be foundational. Building these in from the beginning is far more cost-effective than retrofitting later.
Which approach is recommended for implementations in production?
Automation and infrastructure as code provide consistency, repeatability, and version control, reducing errors and enabling rapid deployment.
What ensures reliability in systems systems?
Redundancy and fault tolerance ensure services remain available despite component failures through multiple availability zones and automated failover.
How should operations be monitored effectively?
Continuous automated monitoring enables proactive issue detection and rapid response, minimizing downtime and improving system health.
What is essential for secure deployments deployment?
Least privilege access and encryption protect sensitive data and limit attack surface. Security must be built-in from the start.
The Docker Certified Associate (DCA) exam is one of the most respected container certifications in the industry. Issued by Mirantis (who acquired Docker Enterprise), passing DCA proves you can architect, deploy, and manage containerized environments at scale. Here's everything you need to know to pass.
Security is heavily tested on DCA. You must understand:
Know every network driver and when to use each one:
The highest-weighted domain. Master Swarm mode:
Data persistence is a common exam topic:
1. Hands-on practice is mandatory. Unlike theory-heavy exams, DCA will ask you to know exact command syntax. Spend time in a real Docker environment, not just reading docs.
2. Know the difference between services and containers. In Swarm, you deploy services (replicated or global), not raw containers. The exam tests this distinction repeatedly.
3. Understand Raft consensus math. For Swarm fault tolerance: with N managers, you can lose (N-1)/2 before losing quorum. Memorize this formula — it appears on the exam.
4. DTR vs UCP is a frequently tested distinction. Docker Trusted Registry (image storage) vs Universal Control Plane (cluster management) — know what each does.
5. Practice reading docker inspect output. Many questions give you inspect output and ask what it means. Get comfortable parsing JSON output from containers, networks, and volumes.
6. Multi-stage builds are a hot topic. Know why they matter (smaller images), how to reference stages, and how to copy artifacts between stages in a Dockerfile.
Timeline: 4-6 weeks
Yes! ExamCert offers a free tier with access to hundreds of DCA practice questions, detailed explanations, and study materials. The free version includes enough content to significantly boost your exam preparation. Premium upgrade ($4.99) unlocks all 400+ questions and advanced features.
ExamCert currently offers 400+ practice questions for the DCA exam, covering all exam domains. Our question bank is continuously updated based on feedback from recent exam takers and changes to exam objectives.
Absolutely! Our dedicated team updates the DCA question bank weekly. All questions are aligned with the current 2026 exam objectives, and we incorporate feedback from students who recently passed the exam to ensure accuracy.
The free version includes hundreds of practice questions, basic explanations, and progress tracking. Premium ($4.99 one-time) unlocks all 400+ questions, detailed explanations with references, exam simulation mode, performance analytics, and our 100% money-back guarantee.
Many of our users have passed the DCA exam using primarily ExamCert for their preparation. We recommend supplementing with official Docker / Mirantis documentation and hands-on experience. Our practice questions cover all exam domains comprehensively.
Complete guide to the Docker Certified Associate exam — domains, tips, study plan.
Master Docker Swarm — the highest-weighted DCA exam domain at 25%.
Namespaces, cgroups, Docker Content Trust, secrets management and more.
Bridge, host, overlay, macvlan — know every Docker network driver for the DCA.
Planning to add cloud certs? Try our free AWS certification practice tests.
Compare top certification prep apps and find the best fit for your study style.
The Docker DCA exam is moderately difficult with 55 questions in 90 minutes and a ~65% passing score. The Orchestration domain (25% weight) is the hardest section. Hands-on Docker experience is essential — many questions test exact command syntax. With proper preparation using ExamCert practice questions, most candidates pass on their first attempt.
Absolutely. Containers are the standard deployment method for modern applications, and Docker remains the foundation. DCA validates practical skills used in DevOps, SRE, and cloud engineering roles. Average DCA-certified professionals earn $120K+ in the US. It's also an excellent stepping stone to Kubernetes certifications (CKA/CKAD).
DCA focuses on Docker containers, Swarm orchestration, images, networking, security, and volumes. CKA focuses on Kubernetes cluster management, pods, deployments, and services. DCA is a great starting point — Docker knowledge is foundational to Kubernetes, so many professionals get DCA first, then CKA.
The DCA exam is administered by Mirantis through PSI online proctoring. Schedule at examlocal.com or the Mirantis certification portal. It costs $195 USD and can be taken remotely from home or at a test center. You'll need a webcam, microphone, and stable internet for remote proctoring.
Join thousands of IT professionals who passed their Docker Certified Associate exam using ExamCert. Start practicing free today — no credit card required.
Free forever • Premium just $4.99 • 100% money-back guarantee
