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 #221
How do you list all user namespaces on a system?
- A . lsns -t user
- B . podman list namespaces
- C . podman ns
- D . podman userns
Correct Answer: A
A
Explanation:
The lsns -t user command lists all user namespaces, providing details about processes using them.
A
Explanation:
The lsns -t user command lists all user namespaces, providing details about processes using them.
Question #222
Which option backs up a container state rather than an image?
- A . podman export
- B . podman save
- C . podman commit
- D . podman backup
Correct Answer: A
A
Explanation:
podman export backs up the container’s filesystem, capturing its state without image metadata.
A
Explanation:
podman export backs up the container’s filesystem, capturing its state without image metadata.
Question #223
What does podman stop –timeout 10 <container> do?
- A . Stops the container immediately
- B . Waits 10 seconds before forcefully stopping the container
- C . Pauses the container for 10 seconds
- D . Restarts the container after 10 seconds
Correct Answer: B
B
Explanation:
The –timeout option waits for the specified time before forcefully stopping the container with SIGKILL.
B
Explanation:
The –timeout option waits for the specified time before forcefully stopping the container with SIGKILL.
Question #224
What is the purpose of the –cgroup-manager option in Podman?
- A . Sets the cgroup manager to use for containers
- B . Lists all available cgroups
- C . Deletes cgroup configurations
- D . Monitors cgroup resources
Correct Answer: A
A
Explanation:
The –cgroup-manager option specifies whether Podman should use systemd or cgroupfs for managing cgroups.
A
Explanation:
The –cgroup-manager option specifies whether Podman should use systemd or cgroupfs for managing cgroups.
Question #225
What does the –network=none option do during podman run?
- A . Disables networking for the container
- B . Uses the default bridge network
- C . Creates a new network
- D . Lists all networks
Correct Answer: A
A
Explanation:
The –network=none option runs the container without any network access, enhancing security by isolating it.
A
Explanation:
The –network=none option runs the container without any network access, enhancing security by isolating it.
Question #226
How do you attach to a running container’s standard input/output?
- A . podman exec <container>
- B . podman attach <container>
- C . podman connect <container>
- D . podman run –attach <container>
Correct Answer: B
B
Explanation:
podman attach connects to the container’s input/output streams, useful for troubleshooting.
B
Explanation:
podman attach connects to the container’s input/output streams, useful for troubleshooting.
Question #227
Which Podman command pauses a running container?
- A . podman pause
- B . podman stop
- C . podman halt
- D . podman suspend
Correct Answer: A
A
Explanation:
The podman pause command temporarily suspends the container’s processes.
A
Explanation:
The podman pause command temporarily suspends the container’s processes.
Question #228
Which two commands display container restart policies? (Select two)
- A . podman inspect <container>
- B . podman ps –restart
- C . podman config <container>
- D . podman info
Correct Answer: A, D
A, D
Explanation:
podman inspect shows restart policies in container metadata, while podman info provides host-level configuration details.
A, D
Explanation:
podman inspect shows restart policies in container metadata, while podman info provides host-level configuration details.
Question #229
Which two commands can start a stopped container? (Select two)
- A . podman restart
- B . podman exec
- C . podman start
- D . podman launch
Correct Answer: A, C
A, C
Explanation:
podman start and podman restart can both start a stopped container.
A, C
Explanation:
podman start and podman restart can both start a stopped container.
Question #230
What does podman events –since 1h display?
- A . Events from the last hour
- B . Events occurring one hour in the future
- C . Events since the container started
- D . All historical events
Correct Answer: A
A
Explanation:
The –since 1h option shows events from the last hour, helping monitor recent activities.
A
Explanation:
The –since 1h option shows events from the last hour, helping monitor recent activities.