Exam

Digicomp Code EX188

Red Hat Certified Specialist in Containers - Exam («EX188»)

The Red Hat Certified Specialist in Containers exam (EX188) tests your skills and knowledge of the fundamentals of containers, including the ability to find, customize, run, and manage containerized services in stand-alone environments.
Duration 2.5 hours
Price 550.–
IMPORTANT: Please note that ordered Red Hat exams cannot be canceled.
Alternative exam format available: Red Hat Certified Specialist in Containers - Remote Exam («EX188R»)
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Course facts

This exam is based on RHEL9, podman v4.4 and OCP v4.14 but the content is applicable to all OCP v4 releases including OCP 4.10 and OCP 4.12. Candidates can use any OCP v4 release to prepare for the exam.

To help you prepare, the exam objectives highlight the task areas you can expect to see in the exam. Red Hat reserves the right to add, modify, and remove exam objectives. Such changes will be made public in advance.

To become a Red Hat Certified Specialist in Containers, you should be able to perform these tasks:

Implement images using Podman
  • Understand and use FROM (the concept of a base image) instruction.
  • Understand and use RUN instruction.
  • Understand and use ADD instruction.
  • Understand and use COPY instruction.
  • Understand the difference between ADD and COPY instructions.
  • Understand and use WORKDIR and USER instructions.
  • Understand security-related topics.
  • Understand the differences and applicability of CMD vs. ENTRYPOINT instructions.
  • Understand ENTRYPOINT instruction with param.
  • Understand when and how to expose ports from a Containerfile.
  • Understand and use environment variables inside images.
  • Understand ENV instruction.
  • Understand container volume.
  • Mount a host directory as a data volume.
  • Understand security and permissions requirements related to this approach.
  • Understand the lifecycle and cleanup requirements of this approach.
Manage images
  • Understand private registry security.
  • Interact with many different registries.
  • Understand and use image tags
  • Push and pull images from and to registries.
  • Back up an image with its layers and meta data vs. backup a container state.
Run containers locally using Podman
  • Run containers locally using Podman
  • Get container logs
  • Listen to container events on the container host
  • Use Podman inspect
  • Specifying environment parameters
  • Expose public applications
  • Get application logs
  • Inspect running applications
Run multi-container applications with Podman
  • Create application stacks
  • Understand container dependencies
  • Working with environment variables
  • Working with secrets
  • Working with volumes
  • Working with configuration
Troubleshoot containerized applications
  • Understand the description of application resources
  • Get application logs
  • Inspect running applications
  • Connecting to running containers
As with all Red Hat performance-based exams, configurations must persist after reboot without intervention.

During the exam you may be required to work with one or more pre-written applications. You will not be required to modify application code however in some cases you may need to utilize supplied documentation in order to produce a new deployment of a given application.
  • Administrators, architects, software developers, and anyone responsible for creating, managing, or using containers, including those who want to demonstrate their understanding of the key concepts and processes underlying the use of containers in modern software.
  • Developers who wish to containerize software applications.
  • Administrators who are new to container technology and container orchestration.
  • Architects who are considering using container technologies in software architectures.
  • Site reliability engineers who are considering using Kubernetes and Red Hat OpenShift.

Official scores for exams come exclusively from Red Hat Certification Central. Red Hat does not authorize examiners or training partners to report results to candidates directly. Scores on the exam are usually reported within 3 US business days. Exam results are reported as total scores. Red Hat does not report performance on individual items, nor will it provide additional information upon request.

 

Notice:

Each remote exam includes a second free attempt within the next 365 days, if you fail at the first attempt.

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