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Updated: Aug 25, 2026

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RedHat EX188 Exam Overview:

Certification Vendor:Red Hat
Exam Name:Red Hat Certified Specialist in Containers Exam (EX188)
Exam Number:EX188
Real Exam Qty:Performance-based exam (no fixed question count)
Exam Format:Performance-based lab exam
Related Certifications:Red Hat Certified System Administrator (RHCSA)
Red Hat Certified Engineer (RHCE)
Certificate Validity Period:3 years
Available Languages:English
Exam Duration:150 minutes
Exam Price:USD 400–600 (varies by region)
Recommended Training:Red Hat OpenShift and Containers Training
Exam Registration:Red Hat Training and Certification
Sample Questions:RedHat EX188 Sample Questions
Exam Way:Hands-on performance-based exam (online or onsite depending on Red Hat testing partner)
Pre Condition:Recommended: Red Hat Certified System Administrator (RHCSA) or equivalent Linux administration experience
Official Syllabus URL:https://www.redhat.com/en/services/training-and-certification

RedHat EX188 Exam Syllabus Topics:

SectionObjectives
Container Fundamentals- Container architecture concepts
  • 1. Container lifecycle basics
    • 2. Images vs containers
      Container Deployment and Operations- System integration
      • 1. Automating container startup
        • 2. systemd service integration
          - Troubleshooting
          • 1. Debugging container issues
            • 2. Log analysis
              Container Images and Registries- Image management
              • 1. Tagging and versioning images
                • 2. Pulling and pushing images
                  - Registry usage
                  • 1. Private and public registries
                    • 2. Authentication to registries
                      Storage and Networking- Container networking
                      • 1. Port mapping
                        • 2. Container network configuration
                          - Container storage
                          • 1. Persistent storage concepts
                            • 2. Volume mounting
                              Container Management Tools- Buildah and Skopeo
                              • 1. Image transfer and inspection
                                • 2. Image building workflows
                                  - Podman usage
                                  • 1. Container inspection and logs
                                    • 2. Running and managing containers

                                      RedHat Red Hat Certified Specialist in Containers Sample Questions:

                                      Question 1

                                      Which command creates an image from a container's state?

                                      A. podman save <container>
                                      B. podman export <container>
                                      C. podman copy <container>
                                      D. podman commit <container> <image>


                                      Question 2

                                      What does the podman logout command accomplish?

                                      A. Pushes images to a registry
                                      B. Lists current login status
                                      C. Logs out of all registries
                                      D. Removes credentials for a specified registry


                                      Question 3

                                      Which of the following options are related services of Huawei Cloud EI? (Multiple choice)

                                      A. EI Experience Hall
                                      B. EI service family
                                      C. ModelArts
                                      D. EI Agent


                                      Question 4

                                      What does podman restart <container> do?

                                      A. Kills the container
                                      B. Updates the container configuration
                                      C. Stops and starts the container
                                      D. Removes the container


                                      Question 5

                                      Which of the following options can be executed correctly? (Multiple choice)

                                      A. mox.file.rename ('/ tmp /obs_file.txt ', ' /tmp/obs_file_2.txt ')
                                      B. mox.file .rename (' obs
                                      C. mox.file .rename (' /tmp/obs_file.txt ', ' obs
                                      D. mox.file .rename (' obs
                                      E. mox.file .rename ('obs.//bucket_name1/obs_file.txt',


                                      Solutions:

                                      Question 1
                                      Answer: D
                                      Question 2
                                      Answer: D
                                      Question 3
                                      Answer: A,B,C,D
                                      Question 4
                                      Answer: C
                                      Question 5
                                      Answer: A,B,C,D

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