EX188 Container Operations And Lifecycle Practice Test 4 — 15 Questions

Question 1

An administrator needs to inspect running containers and their resource consumption. Which TWO commands provide information about running container state or resource usage? (Choose TWO)

Accepted Answer

podman stats. podman ps lists containers, and podman stats displays live resource usage statistics.

Answer

podman storage

Answer

podman images

Answer

podman network ls

Question 2

An administrator is integrating Podman containers with systemd using generated unit files. Which TWO statements are correct regarding podman generate systemd and its usage? (Choose TWO)

Accepted Answer

The --new flag ensures that the generated service creates a new container instance upon starting rather than requiring a pre-existing static container.. podman generate systemd creates systemd unit files, and the --new flag ensures unit files create fresh containers on startup rather than relying on existing static container names.

Answer

Running systemctl daemon-reload is unnecessary after generating a unit file because Podman reloads systemd automatically.

Answer

Generated systemd files for rootless users must always be placed in /etc/systemd/system/.

Answer

Generated systemd unit files are executed exclusively by Docker daemon integration.

Question 3

An administrator needs to clean up stopped containers and unused data to reclaim disk space. Which TWO commands can be used to remove containers? (Choose TWO)

Accepted Answer

podman rm. podman rm removes specified containers, and podman container prune removes all stopped containers.

Answer

podman image prune

Answer

podman rmi

Answer

podman system clean

Question 4

An administrator wants to examine the internal state, environment variables, or port mappings of a running container. Which TWO commands or techniques are appropriate? (Choose TWO)

Accepted Answer

podman port. podman inspect retrieves low-level metadata, and podman port displays mapped network ports.

Answer

podman list-ports

Answer

podman env

Answer

podman show-env

Question 5

An administrator is troubleshooting process execution and live configuration updates on a running container. Which TWO commands allow interacting with processes or updating resource limits on the fly? (Choose TWO)

Accepted Answer

podman update. podman top shows container processes, and podman update modifies container resources live.

Answer

podman exec-top

Answer

podman adjust

Answer

podman modify

Question 6

An administrator is working with Podman Quadlets to manage container lifecycles via systemd. Which TWO statements regarding Quadlet file naming conventions and directory locations are correct? (Choose TWO)

Accepted Answer

Quadlet configuration files are automatically translated into native systemd unit files by Podman generators.. Quadlet configuration files use specific extensions like .container and system-wide files reside in /etc/containers/systemd/.

Answer

Rootless Quadlet files are placed in /var/lib/containers/systemd/ root directory.

Answer

Quadlet files must be manually compiled using gcc before systemd can read them.

Answer

Quadlet container unit files must use the exact file extension .service.container.

Question 7

An administrator needs to view logs or attach to a running container to troubleshoot an issue. Which TWO commands can be used to interact with container output streams? (Choose TWO)

Accepted Answer

podman attach. podman logs retrieves logged output, and podman attach connects to container input/output streams.

Answer

podman stream

Answer

podman view-logs

Answer

podman output

Question 8

An administrator needs to copy files between the host system and a running container. Which TWO syntax forms or commands are correct when using podman cp? (Choose TWO)

Accepted Answer

podman cp container_name:/app/file.txt host_file.txt. podman cp supports both host_path container_path and container_path host_path copy directions.

Answer

podman cp --target=container_name host_file.txt /app/file.txt

Answer

podman cp --direction=to-container host_file.txt container_name:/app/

Answer

podman cp --from=container_name /app/file.txt host_file.txt

Question 9

An administrator needs to stop and remove a running container in a single workflow. Which TWO of the following approaches accomplish this? (Choose TWO)

Accepted Answer

podman rm -f container_name. podman rm -f forces removal of running containers (stopping them first), and stopping a container before running podman rm is also valid.

Answer

podman kill --remove container_name

Answer

podman delete --force container_name

Answer

podman stop --rm container_name

Question 10

An administrator wants to modify container settings or state. Which TWO of the following commands are valid Podman subcommands for container management? (Choose TWO)

Accepted Answer

podman restart. podman rename and podman restart are valid subcommands.

Answer

podman reconfigure

Answer

podman alter

Answer

podman modify

Question 11

An administrator is troubleshooting container exit codes and low-level state details. Which TWO of the following inspect format expressions correctly extract container state attributes? (Choose TWO)

Accepted Answer

podman inspect --format='{{.State.StartedAt}}' container_name. .State.ExitCode and .State.StartedAt are valid Go template expressions for podman inspect.

Answer

podman inspect --format='{{.Metadata.ExitCode}}' container_name

Answer

podman inspect --format='{{.Status.Running}}' container_name

Answer

podman inspect --format='{{.Exit}}' container_name

Question 12

An administrator wants to check container port mappings and process listings inside containers. Which TWO commands provide these insights? (Choose TWO)

Accepted Answer

podman port. podman port shows port mappings and podman top shows running processes.

Answer

podman ps-ports

Answer

podman processes

Answer

podman netstat

Question 13

An administrator needs to export container contents or create new images from containers. Which TWO commands accomplish these actions? (Choose TWO)

Accepted Answer

podman commit. podman export exports a container filesystem to a tarball, and podman commit creates an image from a container.

Answer

podman extract

Answer

podman push-container

Answer

podman save

Question 14

An administrator needs to run a container named 'web01' using Podman in the background using the image registry.access.redhat.com/ubi8/httpd-24:latest. Which command correctly starts this container in detached mode and maps port 8080 on the host to port 80 in the container?

Accepted Answer

podman run -d --name web01 -p 8080:80 registry.access.redhat.com/ubi8/httpd-24:latest. The correct command uses 'podman run -d' for detached mode, '--name web01' to set the name, '-p 8080:80' for port mapping, and the correct image reference.

Answer

podman start -d --name web01 -p 8080:80 registry.access.redhat.com/ubi8/httpd-24:latest

Answer

podman container create -d --name web01 -p 8080:80 registry.access.redhat.com/ubi8/httpd-24:latest

Answer

podman run -b --name web01 -p 80:8080 registry.access.redhat.com/ubi8/httpd-24:latest

Question 15

An administrator is managing rootless containers and needs to understand how user namespaces and security isolation function. Which TWO of the following configuration files or tools are directly relevant to rootless user mapping and systemd user persistence? (Choose TWO)

Accepted Answer

/etc/subuid and /etc/subgid. /etc/subuid defines subordinate UID ranges, and loginctl enable-linger configures user session persistence for systemd user services.

Answer

systemctl system-wide-users

Answer

/etc/containers/rootless.conf

Answer

/var/lib/podman/subuid.conf