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. Objectives listed for this exam are based on the most recent Red Hat product version available.
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.
Some experience in the use of a Linux terminal session, issuing operating system commands, and familiarity with shell scripting is benficial. A Red Hat Certified System Administrator (RHCSA) certification is recommended but not required.
Review the exam objectives
Study points for the exam
To help you prepare, the exam objectives below highlight the task areas you can expect to see covered in the exam.
You should be able to demonstrate these skills and abilities:
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.
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.
While attending Red Hat classes can be an important part of your preparation, attending class does not guarantee success on the exam. Previous experience, practice, and native aptitude are also important determinants of success.
Many books and other resources on system administration for Red Hat products are available. Red Hat does not endorse any of these materials as preparation guides for exams. Nevertheless, you may find additional reading helpful to deepen your understanding.
Red Hat Certified Specialist in Containers Exam is a hands-on, practical exam that requires you to undertake real-world tasks. Internet access is not provided during the exam, and you will not be permitted to bring any hard copy or electronic documentation into the exam. This prohibition includes notes, books, or any other materials. For most exams, the documentation that ships with the product is available during the exam.
Scores and reporting
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 U.S. 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.
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