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Docker DCA Exam Questions
- Topic 1: Run Containerized Applications from Pre-Existing Images Stored in a Centralized Registry
- Topic 2: Deploy Images Across the Cluster
- Topic 3: Install Maintain and Operate the Docker Platform
- Topic 4: Triage Issue Reports from Stakeholders and Resolve
- Topic 5: Standup new Docker Environments and Perform General Maintenance and Configuration
- Topic 6: Migrate Traditional Applications to Containers
- Topic 7: Configure and Troubleshoot Docker Engine
Free Docker DCA Exam Actual Questions
Note: Premium Questions for DCA were last updated On Jun. 22, 2025 (see below)
Is this a type of Linux kernel namespace that provides container isolation?
Solution.Process ID
Process ID is a type of Linux kernel namespace that provides container isolation.Linux namespaces are a feature of the Linux kernel that isolate and virtualize system resources of a collection of processes1.Process ID namespace isolates the process ID number space, meaning that processes in different PID namespaces can have the same PID2.This allows each container to have its own init process with PID 1, which is the ancestor of all other processes in the container3.Process ID namespace also affects other identifiers, such as thread IDs, parent process IDs, and session IDs4.Reference: Namespaces in operation), pid_namespaces),What is a PID namespace?, Linux Namespaces: PID)
Is this an advantage of multi-stage builds?
Solution: simultaneously creates and tags multiple images
Will this command list all nodes in a swarm cluster from the command line?
Solution: 'docker swarm nodes'
Is this an advantage of multi-stage builds?
Solution: simultaneously creates and tags multiple images
The Kubernetes yaml shown below describes a networkPolicy.
Will the networkPolicy BLOCK this trafftc?
Solution. a request issued from a pod bearing the tier: api label, to a pod bearing the tier: backend label
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