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Red Hat EX188 Exam Questions and Answers, Red Hat Certified Specialist in Containers | SPOTO

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Question #1
Which instruction allows you to pass parameters to a container's entry point?
A. ENTRYPOINTcorrect
B. CMD
C. RUN
D. CONFIG
View answer
Correct Answer: A
Question #2
Among the following options, which of the following is the correct statement about AK/SK? (Multiple choice)
A. SK, a key used in conjunction with the access key ID to cryptographically sign the request, identifies the sender, and prevents the request from being modified
B. When sending requests to lower-level services through the API gateway, AK and SK must be used for signing
C. AK, Access Key ID, a unique identifier associated with the Secret Access Key
D. Use the access key ID and the secret access key together to encrypt and sign the request
View answer
Correct Answer: ACD
Question #3
Which instruction allows you to add compressed archives directly into an image?
A. ADDcorrect
B. COPY
C. RUN
D. EXTRACT
View answer
Correct Answer: A
Question #4
Which of the following belongs to convolutional neural network? (Multiple choice)
A. VGG16
B. Resnet
C. RNN
D. LSTM
View answer
Correct Answer: AB
Question #5
When using the USER instruction in a Containerfile, what does it define?
A. The default user to run container processescorrect
B. The ownership of files in the container
C. The user permissions during image build
D. The user for network connections
View answer
Correct Answer: A
Question #6
What should you consider when exposing ports in a Containerfile?
A. Use dynamic port assignment for flexibility
B. Match the application’s listening portscorrect
C. Avoid exposing ports in production
D. Always expose multiple ports
View answer
Correct Answer: B
Question #7
What happens when you use podman exec -it /bin/bash?
A. Opens an interactive Bash shell in the container
B. Attaches the container's logs to the terminal
C. Copies Bash into the container
D. Stops the container
View answer
Correct Answer: A
Question #8
When would you use the ENTRYPOINT instruction with parameters?
A. When you need fixed executable behavior with variable argumentscorrect
B. When you need to install software packages
C. When setting environment variables
D. When copying files into the container
View answer
Correct Answer: A
Question #9
Which two instructions can be used to set default commands for a container? (Select two)
A. CMDcorrect
B. ENTRYPOINTcorrect
C. COPY
D. RUN
View answer
Correct Answer: AB
Question #10
What does the podman rmi command do?
A. Removes an imagecorrect
B. Restarts a container
C. Creates a new container
D. Lists all running containers
View answer
Correct Answer: A
Question #11
Which Podman command mounts a host directory into a container?
A. podman run -v /host:/containercorrect
B. podman copy /host:/container
C. podman attach /host:/container
D. podman bind /host:/container
View answer
Correct Answer: A
Question #12
Why should environment variables be defined in the image?
A. To ensure consistent configuration across deploymentscorrect
B. To allow runtime configuration only
C. To increase build time
D. To enable image-specific network settings
View answer
Correct Answer: A
Question #13
What best practice reduces the attack surface of a container image?
A. Use minimal base imagescorrect
B. Always run as root
C. Expose all ports
D. Avoid environment variables
View answer
Correct Answer: A
Question #14
Why should you avoid using the root user inside containers?
A. To reduce security vulnerabilitiescorrect
B. To increase build speed
C. To simplify networking
D. To ensure data persistence
View answer
Correct Answer: A
Question #15
Which instruction sets the working directory inside the container?
A. WORKDIRcorrect
B. DIRECTORY
C. PATH
D. LOCATE
View answer
Correct Answer: A
Question #16
Which instruction would you use to copy files from a local directory into the container?
A. ADD
B. COPYcorrect
C. RUN
D. INCLUDE
View answer
Correct Answer: B
Question #17
Which option mounts a directory read-only when using Podman?
A. -v /host:/container:rocorrect
B. -v /host:/container:rw
C. -m /host:/container
D. --readonly
View answer
Correct Answer: A
Question #18
Which method ensures secure mounting of a host directory as a container volume?
A. Use read-only mode unless writes are requiredcorrect
B. Avoid using SELinux policies
C. Grant full permissions to all users
D. Enable privileged mode
View answer
Correct Answer: A
Question #19
What is the purpose of cleaning up unused volumes after container deletion?
A. To save disk spacecorrect
B. To enhance container performance
C. To remove metadata conflicts
D. To improve runtime security
View answer
Correct Answer: A
Question #20
What is the best practice for managing container volumes?
A. Use named volumes for better lifecycle managementcorrect
B. Always use host mounts
C. Avoid using volumes
D. Rely on temporary filesystems
View answer
Correct Answer: A
Question #21
Which command allows you to list all images managed by Podman?
A. podman imagescorrect
B. podman ls
C. podman list
D. podman show
View answer
Correct Answer: A
Question #22
What happens if you do not clean up volumes after a container is removed?
A. The container image becomes corrupted
B. The volumes persist and consume disk spacecorrect
C. The container cannot be restarted
D. The container loses data integrity
View answer
Correct Answer: B
Question #23
Which statement is true about mounting a host directory into a container?
A. It requires careful permission managementcorrect
B. It automatically adjusts SELinux policies
C. It is preferred for ephemeral data
D. It avoids volume lifecycle management
View answer
Correct Answer: A
Question #24
Which instruction is used to define the base image in a Containerfile?
A. FROMcorrect
B. BASE
C. INIT
D. IMAGE
View answer
Correct Answer: A
Question #25
Which instruction ensures a specific user executes container processes?
A. USERcorrect
B. CMD
C. RUN
D. ENV
View answer
Correct Answer: A
Question #26
What is the purpose of the CMD instruction in a Containerfile?
A. To set a default command for container executioncorrect
B. To define build-time commands
C. To set environment variables
D. To expose ports
View answer
Correct Answer: A
Question #27
Which instruction should be used to download and unpack a .tar.gz file into the container?
A. ADDcorrect
B. COPY
C. RUN
D. CMD
View answer
Correct Answer: A
Question #28
Which approach enhances security when mounting a host directory into a container?
A. Always use privileged mode
B. Apply SELinux policies for the mountcorrect
C. Use dynamic ports
D. Run as root user
View answer
Correct Answer: B
Question #29
What is the key difference between the ADD and COPY instructions in a Containerfile?
A. ADD can fetch remote URLs, COPY cannotcorrect
B. COPY decompresses archives, ADD does not
C. ADD requires a build context, COPY does not
D. COPY and ADD are identical
View answer
Correct Answer: A
Question #30
What is the primary purpose of the RUN instruction in a Containerfile?
A. To copy files from the host
B. To execute commands during the image build processcorrect
C. To specify default commands for the container
D. To define the base image
View answer
Correct Answer: B

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