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DCA Certified Associate

The course teaches Docker professionals how to configure, manage, and secure container environments, covering orchestration, image creation, registry management, networking, and security to meet DCA certification requirements.

Who Should Take This

It is designed for system administrators, DevOps engineers, or cloud architects who have 6 to 12 months of hands‑on production container experience and seek to validate their Docker expertise. These learners aim to pass the Docker Certified Associate exam and confidently implement orchestration, image pipelines, networking, and security best practices in real‑world deployments.

What's Included in AccelaStudy® AI

Adaptive Knowledge Graph

Practice Questions

Lesson Modules

Console Simulator Labs

Exam Tips & Strategy

20 Activity Formats

Course Outline

60 learning goals

1 Orchestration

1 topic

Container Orchestration and Cluster Management

Describe Docker Swarm architecture including manager nodes, worker nodes, raft consensus, and the relationship between services, tasks, and containers
Initialize and manage a Swarm cluster using docker swarm init, join, leave, and update commands with appropriate configuration for high availability
Create and manage services using docker service create, update, scale, and rollback with replicated and global deployment modes
Configure service placement constraints and preferences using node labels, engine labels, and resource constraints to control container scheduling
Describe Kubernetes architecture including pods, deployments, services, namespaces, and the relationship between control plane and worker node components
Apply rolling update and rollback strategies for Docker services including configuring update parallelism, delay, failure actions, and health check monitoring
Configure Docker stack deployments using docker stack deploy with Compose files for multi-service application orchestration
Analyze cluster topology requirements and recommend the optimal number of manager nodes, drain strategies, and node availability settings for fault tolerance
Describe service discovery and load balancing in Docker Swarm including routing mesh, VIP-based load balancing, and DNS round-robin service resolution
Evaluate orchestration platform selection criteria and compare Docker Swarm and Kubernetes capabilities for different workload patterns and organizational requirements
Configure Docker Swarm service resource reservations and limits for CPU and memory to ensure predictable container scheduling and prevent resource contention
Describe Docker Swarm global services and explain when to use global versus replicated mode for monitoring agents, log collectors, and infrastructure services
Apply Docker Swarm node management operations including promoting and demoting nodes, draining nodes for maintenance, and managing node labels for scheduling

2 Image Creation, Management & Registry

1 topic

Images, Dockerfiles, and Registries

Write production-grade Dockerfiles using multi-stage builds, minimal base images, layer optimization, and security best practices
Describe the Docker image layer architecture including copy-on-write, content-addressable storage, and the impact of instruction ordering on build cache efficiency
Configure and manage Docker registries including Docker Hub, Docker Trusted Registry (DTR), and private registries with authentication and access control
Implement image signing and content trust using Docker Content Trust (DCT) and Notary to verify image integrity and publisher authenticity
Apply image scanning and vulnerability assessment tools to identify security issues in container images before deployment
Configure image promotion workflows across registries for development, staging, and production environments with appropriate tagging strategies
Analyze image size and layer structure and recommend optimization strategies including base image selection, dependency management, and build context minimization
Describe image manifest lists and multi-architecture image support for building and distributing images across different CPU architectures
Configure Docker BuildKit for advanced build features including build secrets, SSH agent forwarding, and cache mounts for improved build performance
Describe image garbage collection policies for Docker registries and configure retention rules to manage storage consumption

3 Installation & Configuration

1 topic

Docker Engine Setup and Configuration

Describe Docker Engine installation methods across Linux distributions and configure daemon.json for storage drivers, logging drivers, and default runtime options
Configure Docker Engine storage drivers including overlay2, devicemapper, and btrfs and evaluate their performance characteristics and platform compatibility
Describe Docker Enterprise Edition (Mirantis) architecture including Universal Control Plane (UCP) and Docker Trusted Registry (DTR) components
Configure Docker logging drivers including json-file, syslog, journald, and fluentd and describe centralized log aggregation strategies for containerized environments
Apply Docker namespaces and cgroups configuration to customize container isolation and resource control at the daemon level
Analyze Docker Engine troubleshooting scenarios using dockerd debug logging, container inspect, system events, and system info for diagnosing configuration issues
Configure Docker daemon remote access using TLS certificates including certificate generation, daemon configuration, and client authentication setup
Describe Docker Enterprise high availability architectures including UCP manager cluster sizing, DTR replica configuration, and backup strategies

4 Networking

1 topic

Container Networking and Service Discovery

Describe Docker network drivers including bridge, host, overlay, macvlan, and none and explain their use cases, isolation characteristics, and performance trade-offs
Create and manage overlay networks for multi-host container communication in Docker Swarm with encryption and attachable network options
Configure container DNS resolution including embedded DNS server, DNS search domains, and custom DNS configuration for service discovery
Implement port publishing strategies including host mode, ingress mode, and port range mapping for different traffic routing requirements
Configure macvlan networks to assign MAC addresses and IP addresses from the physical network to containers for direct network integration
Analyze multi-network architectures and recommend network segmentation strategies for isolating frontend, backend, and database tiers in containerized applications
Describe the Container Network Model (CNM) architecture including network, endpoint, and sandbox components and how network drivers implement the model
Configure network encryption for overlay networks in Docker Swarm to protect data in transit between containers on different hosts
Describe network troubleshooting tools and techniques for Docker including nsenter, docker network inspect, and tcpdump within container network namespaces
Describe IPv6 networking support in Docker and configure dual-stack networking for containers that require both IPv4 and IPv6 connectivity

5 Security

1 topic

Container Security and Hardening

Describe Docker security features including namespaces, cgroups, capabilities, seccomp profiles, and AppArmor/SELinux profiles for container hardening
Configure Docker Content Trust to enforce image signing verification and prevent deployment of unsigned or untrusted images in production environments
Apply the principle of least privilege to container security by dropping unnecessary Linux capabilities, enabling no-new-privileges, and using read-only root filesystems
Configure Docker secrets management in Swarm mode to securely distribute sensitive configuration data including passwords, certificates, and API keys
Describe the Docker security scanning pipeline including image scanning, runtime security monitoring, and compliance auditing for container workloads
Configure Docker daemon TLS authentication to secure the Docker API socket and restrict remote access to authorized clients only
Analyze a container security scenario and recommend a defense-in-depth strategy combining image hardening, runtime restrictions, network segmentation, and secrets management
Describe user namespace remapping and rootless Docker configurations to mitigate container escape risks and limit host system exposure
Configure Docker Swarm node certificates and certificate rotation policies for automated PKI management in production clusters
Describe Docker Enterprise RBAC and configure role-based access control for UCP users and teams with collection-based resource scoping
Analyze a multi-tenant container environment and recommend network policies, resource quotas, and isolation strategies to prevent cross-tenant interference

6 Storage & Volumes

1 topic

Container Storage and Data Management

Describe Docker storage options including volumes, bind mounts, and tmpfs mounts and evaluate their persistence, performance, and portability characteristics
Create and manage named volumes using Docker CLI and configure volume drivers for local and distributed storage backends
Configure volume plugins for external storage systems including NFS, Ceph, and cloud storage backends for persistent container data
Describe the Docker storage driver architecture and explain how copy-on-write mechanisms affect container filesystem performance and disk usage
Apply volume backup and restore procedures for containerized stateful applications including database containers and persistent data services
Analyze storage requirements for containerized applications and recommend the appropriate combination of volumes, bind mounts, and storage drivers for different workload patterns
Configure shared storage volumes for Docker Swarm services using volume plugins to enable stateful service deployment across multiple nodes
Describe storage performance considerations for containerized workloads including I/O scheduler selection, storage driver benchmarking, and SSD versus HDD trade-offs

Scope

Included Topics

All domains in the Docker Certified Associate (DCA) exam: Orchestration (25%), Image Creation, Management & Registry (20%), Installation & Configuration (15%), Networking (15%), Security (15%), and Storage & Volumes (10%).
Docker Swarm cluster management, Kubernetes awareness, service orchestration, multi-stage Dockerfiles, image registry management, Docker Content Trust, Docker Engine configuration, storage drivers, overlay networking, container security hardening, secrets management, volume drivers, and container storage patterns.

Not Covered

Deep Kubernetes administration beyond DCA exam scope (CKA/CKAD level topics)
Specific cloud provider container services (ECS, AKS, GKE) beyond awareness
Docker Desktop specific features and cross-platform development workflows
CI/CD pipeline implementation details beyond container image build and push
Application-level debugging and programming language specific container patterns