Free RedHat EX188 Practice Exams

RedHat EX188 Practice Exams

Last updated on Oct 22,2026
  • Exam Code: EX188
  • Exam Name: Red Hat Certified Specialist in Containers
  • Certification Provider: RedHat
  • Latest update: Oct 22,2026
Question #251

Which command shows processes running inside a container?

  • A . podman stats <container>
  • B . podman ps <container>
  • C . podman top <container>
  • D . podman inspect <container>

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Correct Answer: C
C

Explanation:

podman top displays the list of processes running inside a container, similar to the top command.
Question #252

Which two commands allow you to back up a volume? (Select two)

  • A . podman volume export
  • B . podman run –volume-backup
  • C . podman export <volume>
  • D . tar -cvf backup.tar /path/to/volume

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Correct Answer: A, D
A, D

Explanation:

podman volume export and tar can be used to back up volume data into an archive.
Question #253

How do you export a Podman container to a tar archive?

  • A . podman export -o container.tar <container>
  • B . podman save <container>
  • C . podman tar <container>
  • D . podman commit <container>

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Correct Answer: A
A

Explanation:

The podman export -o command saves the container’s filesystem to a tar archive, excluding image metadata.
Question #254

What is the purpose of podman run –rm?

  • A . Removes the container after it exits
  • B . Runs the container in read-only mode
  • C . Mounts a volume
  • D . Saves the container’s state

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Correct Answer: A
A

Explanation:

The –rm option automatically removes the container when it exits, keeping the environment clean.
Question #255

Which command lists all volumes managed by Podman?

  • A . podman volume ls
  • B . podman volumes
  • C . podman list volumes
  • D . podman storage list

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Correct Answer: A
A

Explanation:

The podman volume ls command lists all existing volumes, including their names and details.
Question #256

Which two commands display environment variables of a running container? (Select two)

  • A . podman inspect <container>
  • B . podman exec <container> env
  • C . podman logs –env <container>
  • D . podman stats –env <container>

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Correct Answer: A, B
A, B

Explanation:

podman inspect shows environment variables in the container metadata, and podman exec <container> env displays them via the env command.
Question #257

What is the default registry used by Podman when no registry is specified?

  • A . quay.io
  • B . docker.io
  • C . registry.redhat.io
  • D . ghcr.io

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Correct Answer: B
B

Explanation:

docker.io is the default registry used by Podman if no registry is specified during a podman pull.
Question #258

What is a benefit of using the –read-only option with podman run?

  • A . Enhances container security by preventing writes
  • B . Increases container speed
  • C . Reduces container size
  • D . Allows root user access

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Correct Answer: A
A

Explanation:

The –read-only option makes the filesystem immutable, improving security by preventing changes.
Question #259

What does podman pod create do?

  • A . Creates a new pod
  • B . Runs a container in a pod
  • C . Removes a pod
  • D . Starts a pod

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Correct Answer: A
A

Explanation:

podman pod create initializes a new pod, grouping containers to share the same network and namespaces.
Question #260

What does the –cap-drop option do in Podman?

  • A . Removes specified Linux capabilities
  • B . Adds extra capabilities
  • C . Runs the container with root privileges
  • D . Drops network connections

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Correct Answer: A
A

Explanation:

The –cap-drop option removes specific capabilities, reducing potential security risks.
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